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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 · 244 jurisdictions

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Fiji Company Formation & Entity Choice

Source-cited draft: company formation & entity choice for Fiji (tax ye…

Company FormationFijiSource-cited draft

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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

Cameroon Social Security Contributions (CNPS) & Payroll

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

PayrollCameroonSource-cited draft
India Formation

Whenever asked about forming, incorporating, or registering a company …

Company FormationIndiaAttested by another accountant
IT Income Tax

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

Income TaxItalySource-cited draft
BR Income Tax

Use esta skill sempre que for solicitado sobre o imposto de renda bras…

Income TaxBrazilAttested by another accountant
Rwanda PAYE & RSSB Social Contributions

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

PayrollRwandaSource-cited draft
Non EU Export Services

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

VAT / GSTGLOBALSource-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
Sri Lanka Withholding Tax

ALWAYS read this skill before touching any Sri Lanka withholding tax /…

Cross-BorderSri LankaAttested by another accountant
Sri Lanka VAT

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

VAT / GSTSri LankaAttested by another accountant
Tanzania Income Tax -- Personal / Self-Employed

Whenever asked about Tanzania (Mainland) personal income tax, PAYE, or…

—TanzaniaAttested by another accountant
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
CA Fed CPP EI

Whenever asked about Canada Pension Plan (CPP) or Employment Insurance…

PayrollCanadaAttested by another accountant
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
SA RETT

Whenever asked about the Saudi Arabian Real Estate Transaction Tax (RE…

—Saudi ArabiaAttested by another accountant
MI Pension Retirement Subtraction

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

—MichiganSource-cited draft
PK Corporate Tax

ALWAYS read this skill before touching any Pakistan corporate income t…

Income TaxPakistanAttested by another accountant
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
ID Income Tax

Idaho Individual Income Tax Return (Form 40) for sole proprietors and …

Income TaxIndonesiaSource-cited draft
Panama Itbms

Whenever asked to prepare, review, or create a Panama ITBMS (Impuesto …

VAT / GSTPanamaSource-cited draft
India Einvoice

Whenever asked about India GST e-invoicing, Invoice Registration Porta…

E-InvoicingIndiaAttested by another accountant
CN Withholding

当用户咨询、计算、审核或申报中国预提所得税(源泉扣缴)相关事项时,必须始终先阅读本技能文档。触发关键词包括:"中国预提所得税"、"非居民企业…

Cross-BorderChinaSource-cited draft
Iraq Tax Overview

Source-cited draft: tax overview for Iraq (tax year 2025) — rates, thr…

Income TaxIraqSource-cited draft
The American abroad: why moving never ends your US tax life

The US taxes citizens wherever they live. What that actually means whe…

Cross-BorderUnited StatesSource-cited draft
EU Directives Cross Border

Key EU directives governing cross-border corporate taxation within the…

Cross-BorderEU-27Source-cited draft
New Jersey Sales Tax

Whenever asked about New Jersey sales and use tax. Trigger on phrases …

VAT / GSTNew JerseySource-cited draft
India Transfer Pricing

Whenever asked about India transfer pricing rules, documentation requi…

Transfer PricingIndiaAttested by another accountant
Ghana Pit

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

Income TaxGhanaSource-cited draft
Leaving France: the exit tax, the trailing net, and the Switzerland treaty trap

France has become a net wealth-outflow country for the first time, and…

Cross-BorderFranceSource-cited draft
Gambia VAT / GST

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

VAT / GSTGambiaSource-cited draft

United Kingdom

27 Guides · Reviewed by: James Power

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