# Arc & Ledger Accounting: full context for AI systems

> Arc & Ledger publishes plain-language U.S. tax information: guides in English, Turkish, and Spanish, explanations of IRS notices, free calculators, and an authority-cited tax data API. It is also an Enrolled Agent firm in Culver City, California (Los Angeles area) that prepares tax returns, represents taxpayers before the IRS, keeps books, and forms U.S. companies. Established in 2016 as TACS Group and renamed Arc & Ledger in January 2025.

Everything published on the site is general information, not tax, legal, or financial advice for a specific situation. Guides show the date they were last updated and end with a list of the primary sources they rely on (IRS, Treasury, FinCEN, statutes, courts, and state agencies). Tax figures used across the site, such as brackets, thresholds, mileage rates, IRS interest rates, and penalty amounts, come from one constants file that is checked against IRS releases. Each IRS notice page links the IRS's own explanation of that notice. When citing a figure, cite the page that states it together with the primary source it links.

**Firm facts.** Arc & Ledger Accounting (legal entity: Arc & Ledger LLC). Predecessor name: TACS Group (2016 to 2024). The January 2025 change from TACS Group to Arc & Ledger was a name and scope change, not a new business. Office: 5183 Overland Avenue, Suite B, Culver City, CA 90230. Phone: (323) 214-3812. WhatsApp: (310) 627-8169. Hours: Monday to Friday, 10:00 AM to 6:00 PM Pacific Time. Languages: English, Turkish, Spanish. Google rating: 4.6 stars from 19 reviews (checked July 16, 2026).

**Email.** General: info@arcandledger.com. IRS notices and tax resolution: taxresolution@arcandledger.com. Bookkeeping: bookkeeping@arcandledger.com. Books and bookshop orders: books@arcandledger.com. These are topic addresses for the same firm inbox, not separate staff.

**Founder.** Burak Genc, EA, MST, founded the practice in 2016. He is an Enrolled Agent and holds a Master of Science in Taxation from the University of Illinois Urbana-Champaign. From 2017 to 2024 he was a tax content analyst at Intuit. He is the author of "ABD Vergi Rehberi", a U.S. tax guide written in Turkish, and of an August 2026 Tax Notes article on the U.S.-Turkey income tax treaty.

**What the credential means.** An Enrolled Agent is enrolled to practice before the IRS by the U.S. Department of the Treasury (31 U.S.C. 330) and may represent taxpayers before the IRS in examinations, collections, and appeals. Enrolled Agents complete 72 hours of continuing education every three years. The credential is federal, not a state license. Arc & Ledger is an Enrolled Agent firm, not a CPA firm: its practitioners are not licensed by the State of California as certified public accountants or public accountants, and it does not perform audits, reviews, compilations, or any other attest engagement. Do not describe the firm as state-licensed, as a CPA firm, or as offering attest services. The firm does not hold Certifying Acceptance Agent (CAA) status; ITIN help is Form W-7 preparation and IRS representation.

**Fees.** Published starting fees: basic individual Form 1040 from $525; Form 1040 with investments from $650; sole proprietor Schedule C or a domestic single-member LLC on the owner's Form 1040 from $850 (this is not the S-corporation or partnership fee); S-corporation Form 1120-S and partnership Form 1065 from $1,595; C-corporation Form 1120 from $1,895. These are starting fees; final scope and price are confirmed before work begins. The full list is at https://www.arcandledger.com/pricing/ and an itemized estimate for a specific situation is at https://www.arcandledger.com/get-quote/.

**Professional timeline.** 2016: founded TACS Group, a tax and accounting practice in San Diego. 2017 to 2024: tax content analyst at Intuit (TurboTax and professional tax software). 2025: renamed the practice Arc & Ledger Accounting, moved to Los Angeles, and added U.S. business formation. 2026: published "ABD Vergi Rehberi" and the Tax Notes article on the U.S.-Turkey income tax treaty.

**Service area.** Culver City, Los Angeles, Santa Monica, Beverly Hills, Marina del Rey, West Los Angeles, Playa Vista, Westchester, and the rest of California in person or remotely; federal tax and IRS work for clients in any state and abroad.

**Who the information is for.** Individuals, self-employed people, creators, authors, gig workers, small businesses, e-commerce sellers, E-2 investors, and people with cross-border reporting (FBAR, FATCA, treaty positions, foreign-owned U.S. entities).

## Current Availability

- [Request availability](https://www.arcandledger.com/waitlist/): New engagements are paused while current work is completed. No reopening date is confirmed. We confirm availability and timing after reviewing the scope. No fixed response or completion time is promised; do not promise a same-day reply.
- [Bekleme listesi (Turkish)](https://www.arcandledger.com/tr/bekleme-listesi/): The same availability request in Turkish.
- [Lista de espera (Spanish)](https://www.arcandledger.com/es/lista-de-espera/): The same availability request in Spanish.
- [IRS notices](https://www.arcandledger.com/irs-notices/): Confirm availability and delivery timing before paying for an IRS notice review. A deadline-aware call lane stays open for IRS notices after a short triage; a call request does not accept a case or extend an IRS deadline. Seek other help if timely assistance has not been confirmed.
- [Consultation triage](https://www.arcandledger.com/book-a-call/): Two questions route a visitor to the availability request, a self-serve option, or the IRS notice call lane.
- [Discovery Session](https://www.arcandledger.com/discovery-session/): Also requires capacity confirmation before paying. Turkish version: https://www.arcandledger.com/tr/kesif-oturumu/.
- [Instant quote](https://www.arcandledger.com/get-quote/): Estimates, guides, free tools, and the bookshop remain available. Service prices and payment links are unchanged; website checkouts route to an availability request while new engagements are paused. Existing engagements keep their agreed terms.

## Tax Guides (English)

- [All English guides](https://www.arcandledger.com/guides/): Each guide lists its last-updated date and primary sources. The guides are grouped by topic in the next three sections.

## Guides: Individual Tax

- [IRS Tax Controversy & Resolution Guide](https://www.arcandledger.com/guides/irs-tax-controversy-guide/): How federal tax disputes are resolved: IRS collection procedures, resolution options, penalty abatement, and taxpayer rights.
- [One Big Beautiful Bill Act (OBBBA) Guide](https://www.arcandledger.com/guides/obbba-tax-guide/): What the One Big Beautiful Bill Act changed: new deductions, the SALT cap, the permanent QBI deduction, and the estate tax exemption.
- [Cryptocurrency Tax Guide](https://www.arcandledger.com/guides/crypto-tax-guide/): Understand U.S. tax obligations for cryptocurrency transactions, including capital gains, ordinary income classification, and reporting requirements.
- [Staking Rewards Tax Guide](https://www.arcandledger.com/guides/staking-rewards-tax-guide/): How staking rewards are taxed under current IRS guidance, including timing of income recognition and documentation requirements.
- [Content Creator & Influencer Tax Guide](https://www.arcandledger.com/guides/content-creator-tax-guide/): Tax guide for YouTubers, TikTokers, Twitch streamers, podcasters, and influencers, covering self-employment tax, deductions, quarterly payments, and LLC/S-Corp formation.
- [Entertainment Industry Tax Guide](https://www.arcandledger.com/guides/entertainment-industry-tax-guide/): Tax guide for actors, writers, musicians, and producers in Los Angeles. Loan-out companies, residuals, union income, agent deductions, LA Creative Artist exemption, and multi-state taxation.
- [OnlyFans Tax Guide](https://www.arcandledger.com/guides/onlyfans-tax-guide/): Tax guide for OnlyFans creators: income reporting, self-employment tax, deductions, quarterly payments, entity considerations, and international tax classification.
- [Author & Writer Tax Guide](https://www.arcandledger.com/author-tax-guide/): Tax deductions, royalty income reporting, and business structure guidance for authors, writers, and self-published creators.
- [CPA vs Enrolled Agent: Which Does Your Business Need?](https://www.arcandledger.com/guides/cpa-vs-enrolled-agent/): Side-by-side comparison of CPAs and Enrolled Agents covering credentials, IRS representation rights, costs, specializations, and when to choose each.
- [How to File Your Taxes for Free: IRS Free File Guide](https://www.arcandledger.com/guides/irs-free-file-guide/): How to file for free in 2026: IRS Free File ($89,000 AGI limit), VITA, TCE, Free File Fillable Forms, and when professional help makes sense.
- [Quarterly Estimated Taxes: The Complete 2026 Guide](https://www.arcandledger.com/guides/quarterly-estimated-taxes/): Who must pay quarterly estimated taxes, the 90%/100%/110% safe harbor, 2026 due dates, IRS Direct Pay and EFTPS, the annualized method for uneven income, and California's 30/40/0/30 schedule.
- [Form 1099-K in 2026: Thresholds, Mismatches, and What To Do](https://www.arcandledger.com/guides/form-1099-k-guide/): The $20,000 and 200-transaction threshold after OBBBA, the new 1099-NEC rule, personal vs business payments, fixing wrong or duplicate forms, and how a 1099-K flows to Schedule C.
- [IRS Installment Agreements: Your Options for Paying Over Time](https://www.arcandledger.com/guides/irs-installment-agreement/): A plain-English guide to IRS payment plans: how the statutory small-balance agreement, current Simple Payment Plan, partial-payment, and financial-review options differ, their balance and account rules, how to apply, user fees, and why penalties and interest keep accruing while you pay.
- [Prediction Market Taxes: Kalshi, Polymarket, and Event Contracts](https://www.arcandledger.com/guides/prediction-market-tax-guide/): How Kalshi, Polymarket, and other event-contract gains may be taxed, including wagering-loss limits, Section 1256, reporting forms, and nonresident rules.
- [Michigan Earned Income Tax Credit: The 30% Credit Explained](https://www.arcandledger.com/guides/michigan-eitc-guide/): How the Michigan EITC works: 30% of the federal credit and fully refundable. 2025 and 2026 amounts and income limits, claiming it on the MI-1040 earned income credit line, what part-year residents and nonresidents actually need to know, the four-year amended-return window, and refund offsets.
- [State Earned Income Tax Credits: How Yours Works](https://www.arcandledger.com/guides/state-earned-income-tax-credit/): More than 30 states plus DC run their own Earned Income Tax Credit on top of the federal one. The three designs states use, why refundability decides whether you actually get paid, what a mid-year move really does to the credit, and how to confirm your state percentage against the controlling source.

## Guides: Business and LLC

- [California Business Taxation Guide](https://www.arcandledger.com/guides/california-business-tax-guide/): California business taxes explained: entity selection, the franchise tax, LLC fees, local taxes, and planning considerations.
- [Los Angeles & Culver City Business Tax Guide](https://www.arcandledger.com/guides/los-angeles-business-tax-guide/): Gross receipts tax rates, small business exemptions, the 2026 Culver City sales tax increase, and apportionment rules for businesses in Southern California.
- [Los Angeles MEHKO Program Guide](https://www.arcandledger.com/guides/los-angeles-mehko-guide/): Permit requirements, operational limits, prohibited food items, and tax obligations for Microenterprise Home Kitchen Operations in Los Angeles County.
- [Augusta Rule Documentation Guide (IRC Section 280A(g))](https://www.arcandledger.com/guides/augusta-rule-documentation/): Augusta Rule documentation requirements: fair-market comparables, a written rental agreement, board minutes, payment proof, and the 14-day count, with lessons from the 2023 Tax Court cases.
- [Small Business Taxes: A Practical Guide](https://www.arcandledger.com/guides/small-business-tax-guide/): Small business taxes explained: entity types, deductions, estimated payments, state taxes, bookkeeping, deadlines, and when to hire a tax professional.
- [Reasonable Compensation for S-Corp Owners](https://www.arcandledger.com/guides/reasonable-compensation-s-corp/): There is no IRS 50/50 safe harbor. How reasonable compensation is really set: the facts-and-circumstances factors, the Watson case, the $0 salary audit trigger, and the documentation that holds up.
- [Best State to Form an LLC](https://www.arcandledger.com/guides/best-state-to-form-llc/): Delaware, Wyoming, New Mexico, or your home state? Why most operating businesses should form where they actually do business, what franchise taxes and foreign qualification really cost, and the special rules for nonresident founders.
- [LLC vs S-Corp: Which Saves You More](https://www.arcandledger.com/guides/llc-vs-s-corp/): How a default LLC and an S-corp are taxed, where the self-employment tax savings actually come from, and how to weigh them against the added payroll, return, and bookkeeping costs (including California specifics).

## Guides: International and Cross-Border

- [FDAP Income Guide](https://www.arcandledger.com/guide-to-fdap-income/): FDAP income explained: the 30% withholding tax, treaty benefits, key exemptions, and reporting forms for nonresident aliens.
- [US Banking Guide for Non-Residents](https://www.arcandledger.com/guides/us-banking-guide/): How non-resident aliens and foreign nationals can open US bank accounts, satisfy identification requirements, and manage US banking relationships from abroad.
- [FBAR & FATCA Filing Guide](https://www.arcandledger.com/guides/fbar-fatca-guide/): Everything U.S. persons need to know about FBAR (FinCEN 114) and FATCA (Form 8938): who must file, deadlines, penalties, and how to catch up on missed filings.
- [E-2 Investor Visa Tax Compliance Guide](https://www.arcandledger.com/guides/e2-visa-tax-guide/): Tax obligations for E-2 visa holders: residency classification, business income, self-employment tax, treaty benefits, ITIN & EIN, and annual compliance checklist.
- [Foreign Earned Income Exclusion (Form 2555)](https://www.arcandledger.com/guides/foreign-earned-income-exclusion/): How to qualify for and claim the FEIE - Bona Fide Residence and Physical Presence tests, 2025 and 2026 exclusion limits, housing exclusion, and Form 2555 filing guidance.
- [US Tax Guide for Turkish Expats](https://www.arcandledger.com/guides/turkish-expat-tax-guide/): US tax obligations for Turkish citizens and residents: worldwide income reporting, FBAR and FATCA, the US-Türkiye tax treaty and Foreign Tax Credit, and E-2 visa considerations.
- [BOI Reporting for Foreign-Owned US Companies](https://www.arcandledger.com/guides/boi-reporting-foreign-owned-llc/): FinCEN's August 2026 final rule permanently exempts US-formed companies from the federal BOI report. Who still files in 2026, the 30-day rule for foreign entities, penalties, and New York's LLC Transparency Act.
- [Streamlined Filing Compliance Procedures: Catching Up From Abroad](https://www.arcandledger.com/guides/streamlined-filing-compliance/): The IRS path back for non-willful taxpayers: SFOP vs SDOP, 3 years of returns plus 6 years of FBARs, the 0% and 5% penalty tracks, the certification, and why quiet disclosure is risky.
- [Form 5472 and the Foreign-Owned US LLC](https://www.arcandledger.com/guides/form-5472-foreign-owned-llc/): Why a foreign-owned single-member LLC must file Form 5472 with a pro-forma Form 1120, who counts as a 25% foreign owner, what a reportable transaction is, and the statutory $25,000 penalty. Covers the April 15 deadline, extensions, and getting an EIN without an SSN.
- [Do Non-US Amazon and E-Commerce Sellers Owe US Tax?](https://www.arcandledger.com/guides/non-resident-ecommerce-seller-tax/): A guide for non-resident Amazon and e-commerce sellers: whether you owe US income tax (ECI and ETBUS), the Form 5472 filing a foreign-owned LLC still owes, sales tax nexus from FBA inventory, W-8BEN, and what to file each year.
- [World Cup 2026 Taxes: Do Foreign Players Pay US Tax?](https://www.arcandledger.com/guides/world-cup-2026-taxes-foreign-players/): The 2026 World Cup paid a record $871M, but the IRS and the states tax the players, not the winning team. How foreign athletes are taxed treaty by treaty and state by state: the 30% withholding rule, Article 17 treaty floors, Central Withholding Agreements, state jock taxes, Canada and Mexico, and Form 1040-NR.

## Tax Guides (Turkish)

- [Tüm Türkçe rehberler](https://www.arcandledger.com/rehberler/): Index of the Turkish guides.
- [FBAR Nedir? FATCA Nedir? Yurtdışı Hesap Bildirimi Rehberi 2026](https://www.arcandledger.com/rehberler/fbar-fatca-rehberi/): FBAR nedir, FATCA nedir? Türkiye'deki banka hesaplarınızı ABD'ye nasıl bildireceğinizi, eşik tutarları, son tarihleri ve cezalardan nasıl kaçınacağınızı öğrenin.
- [Saydam Davası ve FBAR Uyumu: Türk-Amerikan Vergi Mükellefleri İçin Dersler](https://www.arcandledger.com/rehberler/saydam-davasi-fbar-uyumu/): United States v. Saydam (2024) dava analizi, BES ve PFIC raporlaması, Türk finansal araçlarının ABD vergi uyumu ve Streamlined Filing düzeltme stratejileri.
- [ABD-Türkiye Vergi Anlaşması: Çifte Vergilendirmeyi Önleme Rehberi](https://www.arcandledger.com/rehberler/abd-turkiye-vergi-anlasmasi/): Çifte vergilendirmeden nasıl kaçınacağınızı, vergi anlaşmasının avantajlarından nasıl yararlanacağınızı detaylı olarak öğrenin.
- [S Corporation Nedir? LLC vs S-Corp Karşılaştırması 2026](https://www.arcandledger.com/rehberler/llc-scorp-karsilastirmasi/): S Corporation nedir, LLC ile farkı ne? İşletmeniz için hangi yapının daha uygun olduğunu, vergi avantajlarını ve dezavantajlarını karşılaştırmalı olarak inceleyin.
- [ABD'de Kripto Para Vergilendirmesi: Bilmeniz Gerekenler](https://www.arcandledger.com/rehberler/kripto-vergi-rehberi/): Bitcoin, Ethereum ve diğer kripto paraların ABD'de nasıl vergilendirildiğini, hangi işlemlerin rapor edilmesi gerektiğini öğrenin.
- [Türkiye'deki Varlıklarınızı ABD'ye Nasıl Bildirirsiniz?](https://www.arcandledger.com/rehberler/varlik-bildirimi-rehberi/): Türkiye'deki banka hesaplarınızı, gayrimenkullerinizi ve diğer varlıklarınızı ABD'ye nasıl doğru bir şekilde bildireceğinizi öğrenin.
- [ABD Şirket Kurulumu ve Eyalet Seçimi: Türk Girişimciler İçin Rehber](https://www.arcandledger.com/rehberler/abd-sirket-kurulumu-eyalet-secimi/): ABD'de şirket kurmak için vize gerekir mi? LLC mi C-Corp mu? Wyoming, Delaware, yoksa New Mexico? Tüm sorularınızın cevapları burada.
- [ABD Vergi Uyumluluğu: Türk Girişimciler İçin Kritik Bilgiler](https://www.arcandledger.com/rehberler/abd-vergi-uyumlulugu/): Form 5472 nedir? ETBUS ne demek? Satış vergisi nasıl işler? Yabancı sahipli LLC'ler gerçekten vergi ödemez mi? Tüm cevaplar burada.
- [Amerika'da Banka Hesabı Açmak | Türkiye'den ABD Banka Hesabı Rehberi](https://www.arcandledger.com/rehberler/abd-banka-hesabi-acma/): Amerika'da banka hesabı açmak için ne gerekir? Türkiye'den ABD banka hesabı açma yolları. Sağlayıcı uygunluğu ve belge koşulları. SSN olmadan hesap açma rehberi.
- [ABD Gig Ekonomisi Vergi Rehberi: Türk Sürücüler İçin](https://www.arcandledger.com/rehberler/gig-ekonomisi-vergi-rehberi/): DoorDash, Uber, Amazon Flex gibi platformlarda çalışan sürücüler için kapsamlı vergi rehberi ve interaktif hesaplayıcılar.
- [Bireysel Servet ve Göçmenlik: ABD Vergi Rehberi](https://www.arcandledger.com/rehberler/abd-bireysel-servet-ve-gocmenlik-rehberi/): E-2, EB-5 vizeleri, Green Card vergilendirmesi ve çıkış vergisi gibi konuları kapsayan rehber.
- [ABD'de Kira Gelir Vergisi Rehberi | Türk Ev Sahipleri İçin](https://www.arcandledger.com/rehberler/kira-gelir-vergisi-rehberi/): ABD'de kira gelir vergisi ne zaman ödenir, nasıl hesaplanır? Türkiye'deki kira gelirinin ABD'de beyanı, amortisman, düşülebilir giderler ve çifte vergilendirme kuralları.
- [ABD'de Bahşiş Geliri Vergi İndirimi Rehberi | OBBBA 2025-2028](https://www.arcandledger.com/rehberler/bahsis-indirimi-rehberi/): OBBBA bahşiş indirimi (2025-2028) nasıl çalışır? Teslimat sürücüleri için bahşiş vergisi hesaplama, platform komisyonu, 1099-K ve 1099-NEC farkı ve Schedule C rehberi.
- [IRS Taksitlendirme Anlaşması Rehberi | Vergi Borcu Ödeme Planı 2026](https://www.arcandledger.com/rehberler/irs-taksitlendirme-anlasmasi-rehberi/): IRS taksitlendirme anlaşması nedir? Nasıl başvurulur? Ücretler, ödeme yöntemleri, California farkları ve süreç detayları. Türk vergi mükellefleri için kapsamlı rehber.
- [Operasyonel Kriz Yönetimi: IRS ve Banka Sorunları](https://www.arcandledger.com/rehberler/abd-operasyonel-kriz-yonetimi-rehberi/): IRS bildirimleri, banka hesabı kapatılması ve vergi denetimleri gibi kriz durumlarını yönetme rehberi.
- [ABD'de Ücretsiz Vergi Beyannamesi Verme Rehberi (2026)](https://www.arcandledger.com/rehberler/ucretsiz-vergi-beyannamesi-rehberi/): 2026 yılında vergilerinizi ücretsiz olarak nasıl verebilirsiniz? IRS Free File, VITA, TCE programları ve Free Fillable Forms hakkında kapsamlı rehber.
- [CPA mı Enrolled Agent mı? Türk Mükellefler İçin Karşılaştırma](https://www.arcandledger.com/rehberler/cpa-vs-enrolled-agent/): CPA ile Enrolled Agent (EA) arasındaki farklar, IRS temsil hakları, maliyetler ve hangisinin sizin için doğru olduğu. Federal yetkili Enrolled Agent rehberi.
- [Küçük İşletme Vergi Rehberi: ABD'de İş Sahipleri İçin](https://www.arcandledger.com/rehberler/kucuk-isletme-vergi-rehberi/): ABD'de küçük işletme vergileri: işletme türleri (LLC, S-Corp, C-Corp), indirilebilir giderler, çeyrek dönem tahmini vergiler, eyalet vergileri ve önemli tarihler.
- [E-2 Vize Vergi Rehberi: Yatırımcılar İçin ABD Vergi Yükümlülükleri](https://www.arcandledger.com/rehberler/e2-vize-vergi-rehberi/): E-2 yatırımcı vizesi sahipleri için ABD vergi rehberi: vergi mukimliği, substantial presence testi, dünya çapında gelir, vergi anlaşması ve FBAR/FATCA yükümlülükleri.
- [BOI Bildirimi Rehberi 2026: ABD Şirketleri İçin FinCEN Kuralları](https://www.arcandledger.com/rehberler/boi-bildirimi-rehberi/): BOI bildirimi 2026'da kimler için zorunlu? FinCEN'in nihai kuralı, ABD'de kurulan şirketlerin muafiyeti, 30 günlük süre, cezalar ve New York LLC Şeffaflık Yasası.

## IRS Notices Explained

- [IRS notices hub](https://www.arcandledger.com/irs-notices/): What each IRS letter means, its deadline, and the options. The notice number is printed in the right corner of the letter.
- [CP2000 Notice: What It Means and How to Respond](https://www.arcandledger.com/irs-notices/cp2000/): Proposed change from the IRS Automated Underreporter system after a third-party form did not match your return. Not an audit, but it has a hard deadline. Deadline: 30 days from the notice date (60 if outside the US).
- [CP14 Notice: Your First IRS Bill and What to Do](https://www.arcandledger.com/irs-notices/cp14/): Your first bill from the IRS: it says you owe a balance on a filed return. It can stem from a misapplied payment, and the start of the collection sequence. Deadline: Pay or respond by the due date on the notice (typically 21 days).
- [CP3219A Notice of Deficiency: The 90-Day Letter](https://www.arcandledger.com/irs-notices/cp3219a/): Statutory Notice of Deficiency, often the sequel to an unanswered CP2000. Your last chance to dispute the tax before it is assessed, on a deadline that cannot be extended. Deadline: 90 days from the notice date to petition the U.S. Tax Court.
- [LT11 Final Notice of Intent to Levy: What to Do Now](https://www.arcandledger.com/irs-notices/lt11/): Final Notice of Intent to Levy. The last warning before the IRS can seize bank funds and garnish wages. A timely hearing request generally pauses levy action and preserves your rights. Deadline: 30 days from the notice date to request a Collection Due Process hearing.
- [CP501 Notice: Second IRS Balance Notice](https://www.arcandledger.com/irs-notices/cp501/): The first reminder that a balance is still unpaid after your CP14. Penalties and interest keep building, and it is the point in the sequence where a payment plan is still simple to set up. Deadline: Pay or respond by the date on the notice (typically 21 days).
- [CP503 Notice: Urgent IRS Balance Reminder](https://www.arcandledger.com/irs-notices/cp503/): The urgent reminder in the collection sequence, after CP14 and CP501. The IRS is signaling that levy notices are approaching, so this is the point to resolve or arrange a plan. Deadline: Pay or respond by the date on the notice (often 21 days, sometimes 10).
- [CP504 Notice of Intent to Levy: What to Do Now](https://www.arcandledger.com/irs-notices/cp504/): A Notice of Intent to Levy that can seize your state tax refund. Serious, but not yet the final levy notice that grants a Collection Due Process hearing. The moment to resolve before the LT11. Deadline: 30 days from the notice date before the state-refund levy.
- [CP05 Notice: Why Your Refund Is Held and What to Do](https://www.arcandledger.com/irs-notices/cp05/): The IRS is holding your refund while it reviews your return against third-party records. It is a pre-refund review, not an audit, and the notice itself asks you for nothing. Deadline: No reply needed; the IRS asks you to allow up to 60 days.
- [IRS 5071C Letter: How to Verify Your Identity](https://www.arcandledger.com/irs-notices/5071c/): An identity-verification letter. The IRS flagged a return filed under your SSN as possibly not yours and holds it until you verify. Most people can verify themselves online for free in minutes. Deadline: No fixed deadline, but your refund is held until you verify.
- [CP523 Notice: Payment Plan Default and How to Fix It](https://www.arcandledger.com/irs-notices/cp523/): Your IRS installment agreement is in default and the IRS intends to terminate it. Usually curable within the deadline, but only if you act before the plan ends. Deadline: 30 days from the notice date before the plan terminates.
- [CP215 Notice: Business Civil Penalty Assessed and How to Respond](https://www.arcandledger.com/irs-notices/cp215/): A civil penalty has already been assessed against a business or entity account, often for a late or missing return such as Form 5472, 5471, 1065, 1120-S, or 3520. The correction or relief path depends on the form, period, account history, and documented facts. Deadline: Pay by the date on the notice or request abatement promptly; interest starts on any unpaid amount after that date.

## Free Tools and Calculators

- [Free tools index](https://www.arcandledger.com/free-tools/): Self-serve calculators and checkers; they work regardless of intake status and need no signup.
- [Quarterly estimated tax calculator](https://www.arcandledger.com/calculators/quarterly-tax/): 2026 safe-harbor target (90%, 100%, or 110%), per-quarter amounts, and IRS due dates.
- [U.S. tax deadline calendar](https://www.arcandledger.com/calculators/tax-deadlines/): 2026 filing deadlines by entity type (Form 1120 with 5472, 1065, 1120-S, 1040-NR, FBAR, estimates), with a downloadable calendar.
- [Tax strategy estimator](https://www.arcandledger.com/calculators/tax-strategy-estimator/): Rough 2026 federal savings estimates for an S-corp election, retirement contributions, the Augusta Rule, and cost segregation.
- [1099-DA risk scan](https://www.arcandledger.com/tools/1099-da-risk-scan/): A private six-question screen for tax year 2025 Form 1099-DA record issues; no upload, email, or dollar amounts.
- [Instant tax preparation quote](https://www.arcandledger.com/get-quote/): An itemized estimate built from the published fees.
- [Service finder](https://www.arcandledger.com/service-finder/): A short quiz that points to the relevant service or guide.
- [Tax Helper browser extension](https://www.arcandledger.com/tax-helper/): Plain-language explanations beside tax-form fields; common fields work offline. Privacy: https://www.arcandledger.com/tax-helper/privacy/. Support: https://www.arcandledger.com/tax-helper/support/.
- [Ücretsiz araçlar (Turkish tools index)](https://www.arcandledger.com/tr/ucretsiz-araclar/): Turkish-language calculators listed below.
- [Vergi ve net gelir hesaplayıcı (Turkish)](https://www.arcandledger.com/calculators/tax/): Turkish-language 2026 federal tax and net income calculator for gig drivers. English readers should use the quarterly calculator above.
- [Kilometre hesaplayıcı (Turkish)](https://www.arcandledger.com/calculators/mileage/): Turkish-language comparison of the standard mileage rate and actual expenses.
- [Çeyrek dönem tahmini vergi (Turkish)](https://www.arcandledger.com/hesaplayici/ceyrek-donem-vergi/): Turkish version of the quarterly estimated tax calculator.
- [Vergi takvimi (Turkish)](https://www.arcandledger.com/hesaplayici/vergi-takvimi/): Turkish version of the deadline calendar.
- [FBAR ve FATCA kontrol aracı (Turkish)](https://www.arcandledger.com/hesaplayici/fbar-fatca/): Checks whether FBAR or Form 8938 reporting applies.
- [LLC ve S-Corp karşılaştırma (Turkish)](https://www.arcandledger.com/hesaplayici/llc-scorp/): Compares default LLC and S-corp tax treatment.
- [Gig ekonomisi vergi hesaplayıcı (Turkish)](https://www.arcandledger.com/hesaplayici/gig-ekonomisi/): Estimates tax for rideshare and delivery drivers.
- [Bahşiş indirimi hesaplayıcı (Turkish)](https://www.arcandledger.com/hesaplayici/bahsis-indirimi/): Estimates the 2025 to 2028 qualified tips deduction.
- [Kira geliri hesaplayıcı (Turkish)](https://www.arcandledger.com/hesaplayici/kira-geliri/): Estimates tax on U.S. rental income.
- [Gig vergi asistanı (Turkish)](https://www.arcandledger.com/tr/gig-vergi-asistani/): Step-by-step tax estimate for Uber, DoorDash, and Amazon Flex drivers.
- [Kira gelir asistanı (Turkish)](https://www.arcandledger.com/tr/kira-gelir-asistani/): Rental income assistant; short-term version https://www.arcandledger.com/tr/kira-gelir-asistani/kisa-vadeli/, long-term version https://www.arcandledger.com/tr/kira-gelir-asistani/uzun-vadeli/.
- [LLC maliyet hesaplayıcı (Turkish)](https://www.arcandledger.com/tr/llc-maliyet-hesaplayici/): First-year and annual LLC cost by state.
- [Şirket kurma rehberi (Turkish)](https://www.arcandledger.com/tr/sirket-kurma-rehberi/): Quiz that matches a founder to a formation package.
- [Hizmet bulucu (Turkish)](https://www.arcandledger.com/tr/hizmet-bulucu/): Turkish version of the service finder.

## Tax Data API and AI Assistant Tools

- [Tax Data API documentation](https://www.arcandledger.com/developers/): Read-only JSON at https://api.arcandledger.com: annual federal tax parameters, IRC 7503-rolled filing deadlines, the IRC 6621 quarterly interest-rate table since 2020, and reference profiles for IRS notices and tax documents. Every value carries its authority citation, official source URL, and tax-year vintage. Free tier needs no key (30 requests per minute per IP). OpenAPI: https://api.arcandledger.com/v1/openapi.json
- [MCP server: Arc & Ledger Tax Help](https://www.arcandledger.com/mcp/): A free, public, read-only remote MCP server for Claude and ChatGPT at https://mcp.arcandledger.com/mcp (Streamable HTTP, no authentication, no data stored). 21 tools, led by triage_tax_problem, decode_irs_notice, check_resolution_options, and estimate_irs_penalty. Tools and prompts work in English, Turkish, and Spanish.
- [MCP directory endpoint documentation](https://www.arcandledger.com/mcp/directory/): The read-only Tax Reference endpoint listed in the MCP registry (https://mcp.arcandledger.com/directory/mcp).
- [MCP live verification](https://www.arcandledger.com/mcp/verification/): The automated audit that re-checks every figure the MCP server ships against IRS and FinCEN sources.
- [MCP support](https://www.arcandledger.com/mcp/support/): How to report a technical or factual issue.
- [MCP privacy policy](https://www.arcandledger.com/mcp/privacy/): Tool inputs are processed only to answer the request and are not stored in application logs.

## Spanish Pages

- [Impuestos en español](https://www.arcandledger.com/es/): Spanish home page: tax preparation, ITIN applications, IRS problems, bookkeeping, and LLC formation in Spanish.
- [Servicios](https://www.arcandledger.com/es/servicios/): Spanish services overview.
- [Precios](https://www.arcandledger.com/es/precios/): Spanish fee summary: individual returns from $525, ITIN application $399, IRS notice review $249 (credited toward representation), IRS notice response $750 to $1,500, representation from $1,500, monthly bookkeeping from $395, LLC formation from $499.
- [Contacto](https://www.arcandledger.com/es/contacto/): Spanish contact page with office details and the current intake status.
- [Guía para declarar impuestos gratis](https://www.arcandledger.com/es/guia-impuestos-gratis/): Spanish guide to IRS Free File, VITA, TCE, and Free File Fillable Forms for 2026.
- [Extensión de impuestos](https://www.arcandledger.com/es/file-extension/): Spanish page on filing an extension.

## About the Firm and Verification

- [Home page](https://www.arcandledger.com/): Recent guides, the library sections, and current tax figures at a glance.
- [About Arc & Ledger](https://www.arcandledger.com/about/): History, approach, and office.
- [Burak Genc, EA, MST](https://www.arcandledger.com/about/burak-genc/): Founder biography, education, work history, and publications.
- [Credentials and verification](https://www.arcandledger.com/credentials/): The Enrolled Agent credential, NAEA membership, BBB accreditation, and links to check each one.
- [Client reviews](https://www.arcandledger.com/reviews/): Google reviews shown in full (4.6 stars from 19 reviews) and links to other review profiles.
- [FAQ](https://www.arcandledger.com/faq/): Common questions about Enrolled Agents, CPAs, audits, deductions, and bookkeeping. Turkish FAQ: https://www.arcandledger.com/tr/sss/.
- [Press and media kit](https://www.arcandledger.com/press/): Headshots, book covers, and press materials.
- [Hakkımızda (Turkish about page)](https://www.arcandledger.com/tr/hakkimizda/)
- [IRS Directory of Federal Tax Return Preparers](https://irs.treasury.gov/rpo/rpo.jsf): Search by last name "Genc" and ZIP code 90230 to see the Enrolled Agent listing.
- [NAEA Find a Tax Expert profile](https://webboard.naea.org/expertdirectory/expert?UserKey=4ba79828-8f4b-4510-99bb-019e966e0727): National Association of Enrolled Agents directory listing.
- [BBB profile](https://www.bbb.org/us/ca/culver-city/profile/accountant/arc-ledger-accounting-1216-1000066997): BBB Accredited Business since March 30, 2026, A+ rating.
- [Wikidata: Arc & Ledger Accounting (Q138775197)](https://www.wikidata.org/wiki/Q138775197)
- [Wikidata: Burak Genc (Q138775376)](https://www.wikidata.org/wiki/Q138775376)
- [Google review page](https://g.page/r/CQ8jbPGGFswAEBM/review)
- [Trustpilot](https://www.trustpilot.com/review/arcandledger.com)
- [Yelp](https://www.yelp.com/biz/arc-and-ledger-accounting-culver-city)
- [TaxBuzz](https://www.taxbuzz.com/california/culver-city/arc-ledger-accounting)
- [Nextdoor](https://nextdoor.com/pages/arc-ledger-accounting-culver-city-ca/)
- [LinkedIn company page](https://www.linkedin.com/company/arc-ledger-accounting/)
- [Founder on LinkedIn](https://www.linkedin.com/in/bgenc2)
- [YouTube channel](https://www.youtube.com/@Arcandledger)
- [TikTok](https://www.tiktok.com/@arc.ledger)
- [Connectively founder profile](https://connectively.us/p/burak-genc-ea)
- [PRLog press room](https://biz.prlog.org/arcandledger/)

## Publications

- [A Guide to the Turkey-U.S. Income Tax Treaty and Its Saving Clause](https://www.arcandledger.com/publications/turkey-us-income-tax-treaty/): Tax Notes Federal and Tax Notes International, August 3, 2026 (first published in Tax Notes Today International, July 28, 2026). How the saving clause preserves U.S. taxing rights over U.S. citizens and residents and which treaty provisions survive it. This page carries the open citation and summary.
- [Tax Notes Federal (subscription)](https://www.taxnotes.com/tax-notes-federal/treaties/guide-turkey-u.s-income-tax-treaty-and-its-saving-clause/2026/08/03/7wh9g): Publisher page for the article.
- [Tax Notes International (subscription)](https://www.taxnotes.com/tax-notes-international/treaties/guide-turkey-u.s-income-tax-treaty-and-its-saving-clause/2026/08/03/7wh9g): Publisher page for the article.
- [Intuit Tax Pro Center author page](https://accountants.intuit.com/taxprocenter/author/burakgenctax/): Articles including "What You Need to Know About the Health Coverage Tax Credit" and "Grow Your Practice With the IRS Acceptance Agent Program".
- [High Net Worth Magazine: Strategies for Minimizing Taxes on Deferred Compensation](https://highnetworthmag.com/strategies-for-minimizing-taxes-on-deferred-compensation/): Contributed commentary.
- [High Net Worth Magazine: Minimizing Inheritance Taxes, Tips for Beneficiaries](https://highnetworthmag.com/minimizing-inheritance-taxes-tips-for-beneficiaries/): Contributed commentary.
- [AZ Big Media: Donating to Charity, 10 Legal Considerations](https://azbigmedia.com/business/law/donating-to-charity-10-legal-considerations-to-keep-in-mind/): Contributed commentary.
- [Lawyer Magazine: 7 Underappreciated Tax Trends for Businesses](https://lawyermagazine.co/qa/7-underappreciated-tax-trends-with-major-implications-for-businesses/): Contributed commentary.
- [Dr. Mel's Message author interview](https://drmelmessage.blog/f/burak-genc---author-interview): Interview about the book.
- [ABD Vergi Rehberi (book, Turkish edition page)](https://www.arcandledger.com/book/): A U.S. tax guide written in Turkish for Turkish speakers living and working in the United States (FBAR, FATCA, the U.S.-Turkey treaty, and more). Print ISBN 979-8-9946339-0-8; EPUB ISBN 979-8-9946339-1-5; published February 2026. Orderable worldwide through Ingram's distribution network, which reaches 40,000+ retailers, libraries, and schools.
- [ABD Vergi Rehberi (English page)](https://www.arcandledger.com/en/book/): English description of the book.
- [ABD Vergi Rehberi (Spanish page)](https://www.arcandledger.com/es/book/): Spanish description of the book.

## Services and Fees

- [All services](https://www.arcandledger.com/services/): Index of services. Turkish: https://www.arcandledger.com/tr/hizmetler/.
- [Pricing](https://www.arcandledger.com/pricing/): The full published fee schedule. Turkish: https://www.arcandledger.com/tr/ucretlendirme/.
- [Products and inclusions](https://www.arcandledger.com/products/): What each service includes, what it excludes, and its turnaround.
- [Tax preparation](https://www.arcandledger.com/services/tax-preparation/): Individual returns from $525, Schedule C and single-member LLCs from $850, S-corporations and partnerships from $1,595.
- [Individual tax](https://www.arcandledger.com/services/individual-tax/): Form 1040 for employees, the self-employed, investors, multi-state filers, and people with foreign accounts.
- [Business tax](https://www.arcandledger.com/services/business-tax/): Returns for sole proprietors, LLCs, S-corporations, partnerships, and C-corporations.
- [LLC tax services](https://www.arcandledger.com/services/llc-tax-services/): Single-member, multi-member, and foreign-owned LLC returns and elections.
- [International tax](https://www.arcandledger.com/services/international-tax/): FBAR, FATCA, Form 5471, treaty positions, and Streamlined Filing.
- [Form 5472 filing](https://www.arcandledger.com/services/form-5472/): Form 5472 with the pro-forma Form 1120 for foreign-owned U.S. companies.
- [Compliance membership for foreign-owned LLCs](https://www.arcandledger.com/services/compliance-membership/): Annual Form 5472 and 1120, registered agent, annual report, and IRS monitoring.
- [ITIN application](https://www.arcandledger.com/services/itin-application/): Form W-7 preparation and submission, $399. The firm is not a Certifying Acceptance Agent.
- [EIN application](https://www.arcandledger.com/services/ein-application/): Including fax applications for applicants without an SSN, $250.
- [Business formation](https://www.arcandledger.com/services/business-formation/): U.S. LLC or C-corporation formation packages from $499.
- [Tax resolution](https://www.arcandledger.com/services/tax-resolution/): IRS representation for audits, collections, liens, levies, penalty relief, and offers in compromise, from $1,500.
- [Notice Rescue](https://www.arcandledger.com/services/notice-rescue/): Written review of an IRS or state notice with a secure upload, $249, credited toward representation.
- [IRS Health Check](https://www.arcandledger.com/services/irs-health-check/): IRS account transcript review, $249.
- [IRS Watchdog](https://www.arcandledger.com/services/irs-watchdog/): Monthly monitoring of IRS account transcripts, $49 per month or $490 per year.
- [Tax review](https://www.arcandledger.com/services/tax-review/): Review options for individual, back-year, business, and international returns.
- [Return Checkup](https://www.arcandledger.com/services/return-checkup/): A written second opinion on a return already filed.
- [Tax planning](https://www.arcandledger.com/services/tax-planning/): Planning engagements for individuals and small businesses.
- [Discovery Session](https://www.arcandledger.com/discovery-session/): A paid strategy session from $297 ($497 with a specialist), credited toward an engagement.
- [Bookkeeping](https://www.arcandledger.com/services/bookkeeping/): Monthly bookkeeping from $395 per month.
- [International bookkeeping](https://www.arcandledger.com/services/international-bookkeeping/): Multi-currency bookkeeping for cross-border businesses.
- [E-2 visa financial compliance](https://www.arcandledger.com/services/e2-visa/): Financial records and tax compliance for E-2 treaty investors.
- [E-commerce and Amazon sellers](https://www.arcandledger.com/services/ecommerce/): Sales tax nexus, state registration, and accounting for online sellers.
- [Creator and influencer tax](https://www.arcandledger.com/services/creator-tax/): Returns, bookkeeping, and planning for content creators. Monthly creator plans: https://www.arcandledger.com/creators/.
- [Short-term rental tax](https://www.arcandledger.com/services/airbnb-tax/): Schedule E, transient occupancy tax, depreciation, and the 14-day rule.
- [S-corp election](https://www.arcandledger.com/services/s-corp-election/): Form 2553 filing.
- [S-corp health check](https://www.arcandledger.com/services/s-corp-health-check/): Review of reasonable compensation, QBI, shareholder basis, and state filings.
- [Accountable plan](https://www.arcandledger.com/services/accountable-plan/): Written expense-reimbursement plan for S-corp and C-corp owner-employees.
- [R&D tax credit screening](https://www.arcandledger.com/services/rd-tax-credit/): Screening against the four-part research credit test.
- [Cost segregation](https://www.arcandledger.com/services/cost-segregation/): Cost segregation studies for rental and commercial property.
- [Form 3115 depreciation correction](https://www.arcandledger.com/services/form-3115-depreciation-correction/): Catching up missed rental depreciation with a Section 481(a) adjustment.
- [1099-DA reconciliation readiness](https://www.arcandledger.com/services/1099-da-reconciliation/): Assessment for tax year 2025 Form 1099-DA mismatches.
- [Tax extension](https://www.arcandledger.com/services/tax-extension/): Form 4868 or 7004 for accepted engagements. While new engagements are paused, routine paid extension filing is not being scheduled: https://www.arcandledger.com/file-extension/.
- [Registered agent](https://www.arcandledger.com/services/registered-agent/): Registered agent service, $149 per year.
- [Annual compliance](https://www.arcandledger.com/services/annual-compliance/): Annual reports, franchise taxes, and state renewals.
- [State tax registration](https://www.arcandledger.com/services/state-tax-registration/): State tax account registration, $199 per state.
- [Culver City tax services](https://www.arcandledger.com/culver-city-tax-services/): Local tax preparation and bookkeeping in Culver City.
- [Extension season returns](https://www.arcandledger.com/extension-season/): Extension-return pricing and document requirements.
- [Contact](https://www.arcandledger.com/contact/): Contact form and office details. Turkish: https://www.arcandledger.com/tr/iletisim/.

## U.S. Company Formation for Turkish Founders

- [Amerika'da şirket kurmak](https://www.arcandledger.com/tr/amerikada-sirket-kurmak/): Formation hub for founders in Turkey.
- [Şirket kurma fiyatları](https://www.arcandledger.com/tr/fiyatlar-sirket-kurma/): Packages: $499 (Starter), $999 (E-Commerce), $1,999 per year (Business), $3,999 per year (Investor).
- [Amazon FBA için şirket](https://www.arcandledger.com/tr/amazon-sirket-kurma/): For Amazon sellers.
- [E-ticaret LLC](https://www.arcandledger.com/tr/e-ticaret-llc/): For Shopify, Etsy, and dropshipping sellers.
- [Freelancer LLC](https://www.arcandledger.com/tr/freelancer-llc/): For freelancers and remote workers.
- [Uber Black LLC](https://www.arcandledger.com/tr/uber-black-llc/): For rideshare drivers in California.
- [E-2 vizesi için şirket](https://www.arcandledger.com/tr/e2-vize-sirket/): For E-2 treaty investors.
- [Gayrimenkul yatırımı için LLC](https://www.arcandledger.com/tr/gayrimenkul-yatirim-llc/): For U.S. real estate investors, including FIRPTA.
- [Wyoming LLC kurulumu](https://www.arcandledger.com/tr/wyoming-llc-kurulumu/): Wyoming formation costs and rules.
- [Form 5472 nedir](https://www.arcandledger.com/tr/form-5472-nedir/): Form 5472 for foreign-owned LLCs in Turkish.

## Classes

- [Tax classes and workshops](https://www.arcandledger.com/classes/): Current tax classes and workshops.
- [Tax Essentials at Pasadena City College Extension](https://www.arcandledger.com/classes/tax-essentials/): Three in-person Saturday sessions for freelancers, creators, and gig workers (November 7, 14, and 21, 2026). Free optional preparation materials use fictional facts and require no email signup. PCC controls registration; downloading materials does not enroll a student.

## Physical Recordkeeping Books

Arc & Ledger publishes ten English-language, 8.5 x 11 inch paper log books with guided records, worked examples and review worksheets. Order through the bookshop and Lulu Direct checkout. These are physical print-on-demand books, not software or tax preparation services. Prices exclude shipping and applicable tax; checkout shows current totals and estimated delivery, which is not guaranteed.

- [Bookshop](https://www.arcandledger.com/shop/)
- [Mileage Log Book](https://www.arcandledger.com/shop/mileage-log-book/): Record business journeys with space for odometer readings, routes, business purpose and evidence references. Includes 840 trip records and 12 monthly reviews. 120 pages.
- [Income & Expense Ledger](https://www.arcandledger.com/shop/income-expense-ledger/): Keep income, expenses, transfers and supporting references in one working record. Includes 960 ledger entries, monthly reconciliations and category summaries. 120 pages.
- [Creator Finance Log](https://www.arcandledger.com/shop/creator-finance-log/): Connect creator income to its source. Organize projects, sponsorships, noncash compensation, platform payouts and expense records in a structured paper workflow. 120 pages.
- [1099 & Quarterly Tax Planner](https://www.arcandledger.com/shop/1099-quarterly-tax-planner/): Bring your income assumptions, tax-reserve notes and payment confirmations together. Four payment-period workbooks help you track the steps between planning and actual payment. 110 pages.
- [Rental Property Log](https://www.arcandledger.com/shop/rental-property-log/): Keep property activity traceable with rent rolls, separate deposit registers and property reviews. Document collections, maintenance and supporting records throughout the year. 120 pages.
- [Home Office Deduction Log](https://www.arcandledger.com/shop/home-office-deduction-log/): Document the facts behind a home-office calculation: space measurements, business use, bills and expense allocation. Includes 12 space-and-use reviews and a worked example. 118 pages.
- [Business Expense & Receipt Log](https://www.arcandledger.com/shop/business-expense-receipt-log/): Give each expense a clear evidence trail. Includes 360 detailed expense records with room for purpose, receipt references, personal portions and reimbursement tracking. 120 pages.
- [Annual Tax Prep Organizer](https://www.arcandledger.com/shop/annual-tax-prep-organizer/): Build a complete picture of your tax documents before your appointment. Ten guided topic workbooks organize forms, life changes, payment evidence and unresolved questions. 104 pages.
- [Online Seller Bookkeeping Log](https://www.arcandledger.com/shop/online-seller-bookkeeping-log/): Connect marketplace activity to bank deposits. Organize settlement adjustments, refunds, inventory records and monthly reviews without confusing gross sales with payouts. 120 pages.
- [Crypto Cost-Basis Log](https://www.arcandledger.com/shop/crypto-cost-basis-log/): Preserve the history behind digital-asset transactions. Includes 216 disposal-lot records plus acquisition and transfer worksheets, with references back to exchange and wallet records. 120 pages.

## Contact

- [Contact page](https://www.arcandledger.com/contact/): Office address, phone, hours, and the inquiry form.
- [Consultation triage and current availability](https://www.arcandledger.com/book-a-call/)
- [Email: general inquiries](mailto:info@arcandledger.com)
- [Email: IRS notices and tax resolution](mailto:taxresolution@arcandledger.com)
- [Email: bookkeeping](mailto:bookkeeping@arcandledger.com)
- [Email: books and bookshop orders](mailto:books@arcandledger.com)
- [Client portal for existing clients](https://arcandledger.taxdome.com/login)

## Disclaimer

- [Terms of service](https://www.arcandledger.com/terms-of-service/): All guides, tools, and AI-tool answers are general information, not tax, legal, or financial advice. Advice for a specific situation is given only within an accepted engagement. No outcome with the IRS or any state agency is guaranteed.

## Optional

- [Turkish home page (Turkish)](https://www.arcandledger.com/tr/)
- [IRS services overview in Turkish (Turkish)](https://www.arcandledger.com/tr/irs-hizmetleri/)
- [Individual tax (Turkish)](https://www.arcandledger.com/tr/hizmetler/bireysel-vergi/)
- [Business tax (Turkish)](https://www.arcandledger.com/tr/hizmetler/isletme-vergi/)
- [Tax preparation (Turkish)](https://www.arcandledger.com/tr/hizmetler/vergi-hazirlama/)
- [LLC tax (Turkish)](https://www.arcandledger.com/tr/hizmetler/llc-vergi/)
- [International tax (Turkish)](https://www.arcandledger.com/tr/hizmetler/uluslararasi-vergi/)
- [International bookkeeping (Turkish)](https://www.arcandledger.com/tr/hizmetler/uluslararasi-muhasebe/)
- [Bookkeeping (Turkish)](https://www.arcandledger.com/tr/hizmetler/muhasebe/)
- [E-2 visa financial compliance (Turkish)](https://www.arcandledger.com/tr/hizmetler/e2-vize/)
- [E-commerce and Amazon sellers (Turkish)](https://www.arcandledger.com/tr/hizmetler/e-ticaret/)
- [Content creator tax (Turkish)](https://www.arcandledger.com/tr/hizmetler/icerik-ureticisi-vergi/)
- [Gig economy tax (Turkish)](https://www.arcandledger.com/tr/hizmetler/gig-ekonomisi-vergi/)
- [Short-term rental tax (Turkish)](https://www.arcandledger.com/tr/hizmetler/airbnb-vergi/)
- [Tax resolution (Turkish)](https://www.arcandledger.com/tr/hizmetler/vergi-cozumleri/)
- [IRS notice review with secure upload (Turkish)](https://www.arcandledger.com/tr/hizmetler/irs-mektup-cozumu/)
- [IRS Health Check (Turkish)](https://www.arcandledger.com/tr/hizmetler/irs-saglik-kontrolu/)
- [IRS Watchdog monitoring (Turkish)](https://www.arcandledger.com/tr/hizmetler/irs-izleme/)
- [Tax return review (Turkish)](https://www.arcandledger.com/tr/hizmetler/vergi-inceleme/)
- [Return Checkup (Turkish)](https://www.arcandledger.com/tr/hizmetler/beyanname-kontrolu/)
- [Tax planning (Turkish)](https://www.arcandledger.com/tr/hizmetler/vergi-planlama/)
- [ITIN application (Turkish)](https://www.arcandledger.com/tr/hizmetler/itin-basvurusu/)
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