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© 2026 OpenAccountants. Open tax rules, reviewed by accountants.

OpenAccountants publishes open, source-cited tax knowledge for use by people, software and AI. Automated outputs are drafts and do not create a professional engagement. Obtain qualified advice before filing, paying or taking a material tax position.

The open Tax Guides

Open Tax Guides for the AI you already use

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Browse the open Tax Guides that power OpenAccountants workflows. Each Guide is designed to be cited, inspectable, and usable by AI systems (as a machine-readable Skill). Some are source-cited drafts. Some have named accountant review. All are open Tax Guides.

The Guides are open. The trust layer shows who reviewed them.

1810 Guides · 1595 matching · 244 jurisdictions

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— researched and cited, not yet reviewed by a licensed practitioner.
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— reviewed as general reference material by a named licensed practitioner.
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CA LLC Fee And Tax

Tier 2 California content skill for Form 568 — the $800 annual minimum…

Income TaxCaliforniaSource-cited draft

Showing 1–50 of 1595 Guides

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1810 Guides across 244 jurisdictions. You do not need to cover an entire country. Publish a Guide within your expertise, under your name, and colleagues attest to the ones they stand behind.

GLOBAL

61 Guides · No accountant yet

United States

60 Guides · No accountant yet

Australia

23 Guides · No accountant yet

Spain

22 Guides · No accountant yet

Canada

35 Guides · Reviewed by: Edgar Lautsyus

Non EU Export Services

Whenever a freelancer or small business sells services to a client loc…

VAT / GSTGLOBALSource-cited draft
IT Income Tax

Whenever asked about Italian income tax for self-employed individuals …

Income TaxItalySource-cited draft
Spain Payroll

Whenever asked about Spanish payroll processing for employees. Trigger…

PayrollSpainSource-cited draft
Global Travel Expenses

Travel expense classification patterns for freelancers and small busin…

—GLOBALSource-cited draft
CN Fapiao Einvoice

当被问及任何中国发票管理、增值税专用发票、增值税普通发票、数电发票(全面数字化的电子发票)、数字化电子发票、金税四期、电子税务局开票、发票真…

E-InvoicingChinaSource-cited draft
Workflow Base

Universal workflow base for all tax and compliance skills worldwide. C…

Income TaxGLOBALSource-cited draft
Global Home Office

Home office expense patterns and deduction rules across the top 10 jur…

—GLOBALSource-cited draft
VAT Workflow Base

Tier 1 workflow base for VAT return preparation skills. Contains the u…

VAT / GSTGLOBALSource-cited draft
Property Management

UK rental income tax for landlords — repairs vs. improvements, the Sec…

Income TaxUnited KingdomSource-cited draft
NZ GST Return

Whenever asked about New Zealand GST returns for self-employed individ…

VAT / GSTNew ZealandSource-cited draft
UA Return Assembly

Final orchestrator that assembles the complete Ukrainian ФОП (FOP) fil…

Income TaxUkraineSource-cited draft
Global Ad Platforms

Pattern library for advertising platforms appearing on bank statements…

—GLOBALSource-cited draft
UA Freelance Intake

Required entry point for the Ukraine self-employed (ФОП) workflow: an …

Income TaxUkraineSource-cited draft
NG VAT

Whenever asked to prepare, review, classify transactions for, or advis…

VAT / GSTNigeriaSource-cited draft
Insurance Sector

Whenever an insurer, reinsurer, captive, MGA, or insurance broker asks…

—GLOBALSource-cited draft
CBAM Carbon Border Adjustment

Whenever an EU importer (declarant), an indirect customs representativ…

Cross-BorderEU-27Source-cited draft
ES Return Assembly

Final orchestrator skill that assembles the complete Spain filing pack…

Income TaxSpainSource-cited draft
RU Return Assembly

As the final orchestrator that assembles the complete Russian filing p…

Income TaxRussiaSource-cited draft
MI Return Assembly

Final capstone orchestrator that assembles the complete federal + Mich…

Income TaxMichiganSource-cited draft
Real Estate and Property

UK SDLT on property purchase — standard bands, the additional-dwelling…

Estate & Wealth TaxUnited KingdomSource-cited draft
Portugal Payroll

Utilize esta skill sempre que for solicitado sobre processamento de sa…

PayrollPortugalSource-cited draft
Financial Reporting Router

Entry point for the OpenAccountants financial-reporting (US GAAP / IFR…

—GLOBALSource-cited draft
Cameroon Social Security Contributions (CNPS) & Payroll

Whenever asked about Cameroon (CM) social security contributions (CNPS…

PayrollCameroonSource-cited draft
Rwanda PAYE & RSSB Social Contributions

Whenever asked about Rwanda payroll taxes, PAYE, or social security / …

PayrollRwandaSource-cited draft
Paraguay IPS Social Security Contributions (Aportes)

Whenever asked about Paraguay IPS social security contributions (aport…

PayrollParaguaySource-cited draft
Afghanistan VAT / GST

Source-cited draft: vat / gst for Afghanistan (tax year 2025) — rates,…

VAT / GSTAfghanistanSource-cited draft
Dominican Republic Company Formation & Entity Choice

Source-cited draft: company formation & entity choice for Dominican Re…

Company FormationDominican RepublicSource-cited draft
Global Router

Universal entry point for OpenAccountants — the open-source accounting…

—GLOBALSource-cited draft
BC Speculation Vacancy Tax

For BC Speculation and Vacancy Tax on residential properties in design…

Income TaxCanadaSource-cited draft
Spain Crypto Tax

Whenever asked about Spain cryptocurrency or digital asset taxation. T…

Crypto TaxSpainSource-cited draft
Tunisia Corporate Income Tax

Source-cited draft: corporate income tax for Tunisia (tax year 2025) —…

Income TaxTunisiaSource-cited draft
NO Capital Gains

Norway capital gains tax: 22% rate, shield deduction (skjermingsfradra…

Income TaxNorwaySource-cited draft
IE Return Assembly

Whenever asked to assemble, finalize, or package an Irish annual tax r…

Income TaxIrelandSource-cited draft
Malaysia Sst

Whenever asked to prepare, review, or classify transactions for a Mala…

VAT / GSTMalaysiaSource-cited draft
Turkey VAT

Whenever asked to prepare, review, or classify transactions for a Turk…

VAT / GSTTurkeySource-cited draft
Algeria Income Tax (IRG) -- Employee & Self-Employed

Whenever asked about Algeria personal income tax (IRG -- Impôt sur le …

Income TaxAlgeriaSource-cited draft
Guatemala Corporate Income Tax

Source-cited draft: corporate income tax for Guatemala (tax year 2025)…

Income TaxGuatemalaSource-cited draft
Germany → Switzerland: commuters, weekly stayers and full movers

The three ways Germans end up with Swiss tax lives — Grenzgänger commu…

Cross-BorderGermanySource-cited draft
Simplified Business Operator Registration Under VAT Act

Simplified business operator registration & Filing VAT return

—South KoreaSource-cited draft
Hong Kong Tax Overview

Source-cited draft: tax overview for Hong Kong (tax year 2025) — rates…

Income TaxHong KongSource-cited draft
Germany VAT Return

Whenever asked to prepare, review, or classify transactions for a Germ…

VAT / GSTGermanySource-cited draft
IL Tax Withholding

When advising on Israeli tax withholding at source (ניכוי מס במקור — N…

Cross-BorderIsraelSource-cited draft
RO Income Tax

Whenever asked about Romanian income tax for self-employed individuals…

Income TaxRomaniaSource-cited draft
ES Income Tax

Whenever asked about Spanish personal income tax (IRPF -- Impuesto sob…

Income TaxSpainSource-cited draft
NT Individual Return

Whenever asked about Northwest Territories territorial income tax for …

Income TaxCanadaSource-cited draft
MI Pension Retirement Subtraction

Whenever asked about Michigan's pension/retirement income subtraction …

—MichiganSource-cited draft
CN Iit

在处理任何中国个人所得税(IIT)事项之前,必须先阅读本技能。本技能适用于中国税务居民个人和非居民个人的个人所得税申报、计算与审核工作,包括…

—ChinaSource-cited draft
FI Income Tax

Whenever asked about Finland income tax for self-employed individuals …

Income TaxFinlandSource-cited draft
Senegal Personal Income Tax (IRPP) —

Whenever asked about Senegal personal income tax (IRPP — Impôt sur le …

Income TaxSenegalSource-cited draft

United Kingdom

27 Guides · Reviewed by: James Power

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