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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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Angola Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Angola (tax yea…

PayrollAngolaSource-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

OK Sales Tax

Whenever asked about Oklahoma sales tax, Oklahoma use tax, OTC sales t…

VAT / GSTOklahomaSource-cited draft
Maldives GST

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

VAT / GSTMaldivesSource-cited draft
FR Return Assembly

Final orchestrator skill that assembles the complete French filing pac…

Income TaxFranceSource-cited draft
Kosovo Payroll

Whenever asked about Kosovo payroll processing for employed persons. T…

PayrollKosovoSource-cited draft
Samoa Personal Income Tax

Source-cited draft: personal income tax for Samoa (tax year 2025) — ra…

Income TaxSamoaSource-cited draft
AU Capital Gains

For any Australian resident's capital gains tax question. Trigger on: …

Income TaxAustraliaSource-cited draft
El Salvador Payroll

Whenever asked about El Salvador payroll processing for employed perso…

PayrollEl SalvadorSource-cited draft
US GAAP Asc805 Business Combinations

US GAAP accounting for business combinations under ASC 805 (Business C…

—United StatesSource-cited draft
Argentina Corporate Income Tax

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

Income TaxArgentinaSource-cited draft
Laos Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Laos (tax year …

PayrollLaosSource-cited draft
FR Rental Income

French rental income taxation: revenus fonciers, LMNP, LMP, and SCI à …

Income TaxFranceSource-cited draft
MA Cpu

Whenever asked about Morocco's Contribution Professionnelle Unique (CP…

—MoroccoSource-cited draft
IA Sales Tax

Whenever asked about Iowa sales and use tax. Trigger on phrases like "…

VAT / GSTIowaSource-cited draft
Myanmar VAT / GST

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

VAT / GSTMyanmarSource-cited draft
IN PayrollPayrollIndianaSource-cited draft
Benin Corporate Income Tax

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

Income TaxBeninSource-cited draft
SG Cpf Medisave

Whenever asked about Singapore CPF MediSave contributions for self-emp…

PayrollSingaporeSource-cited draft
Afghanistan Corporate Income Tax

Source-cited draft: corporate income tax for Afghanistan (tax year 202…

Income TaxAfghanistanSource-cited draft
CO Sales Tax

Whenever asked about Colorado sales and use tax, home-rule cities, CDO…

VAT / GSTColoradoSource-cited draft
Georgia Corporate Income Tax

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

Income TaxGeorgiaSource-cited draft
MO Sales Tax

Whenever asked about Missouri sales and use tax. Trigger on phrases li…

VAT / GSTMissouriSource-cited draft
Mali Tax Overview

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

Income TaxMaliSource-cited draft
Cayman Islands Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Cayman Islands …

PayrollCayman IslandsSource-cited draft
UT Income Tax

Whenever asked about Utah individual income tax, Utah Form TC-40, Utah…

Income TaxUtahSource-cited draft
GR Efka

Whenever asked about Greek EFKA (e-EFKA / Ενιαίος Φορέας Κοινωνικής Ασ…

PayrollGreeceSource-cited draft
Luxembourg Payroll

Whenever asked about Luxembourg payroll processing for employed person…

PayrollLuxembourgSource-cited draft
DE Social Contributions

Whenever asked about German social insurance contributions (Sozialvers…

PayrollGermanySource-cited draft
Mozambique Social Security (INSS) & Payroll Tax

Whenever asked about Mozambique social security contributions (INSS), …

PayrollMozambiqueSource-cited draft
Honduras Isv

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

—HondurasSource-cited draft
Fiji Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Fiji (tax year …

PayrollFijiSource-cited draft
SA Excise Tax

Whenever asked about Saudi Arabia Excise Tax. Trigger on phrases like …

Income TaxSaudi ArabiaAttested by another accountant
ES Corporate Tax

Whenever asked about Spanish corporate income tax (Impuesto sobre Soci…

Income TaxSpainSource-cited draft
Cuba Company Formation & Entity Choice

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

Company FormationCubaSource-cited draft
Mozambique VAT

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

VAT / GSTMozambiqueSource-cited draft
Peru Igv

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

VAT / GSTPeruAttested by another accountant
Bhutan Company Formation & Entity Choice

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

Company FormationBhutanSource-cited draft
Uruguay Social Contributions (BPS) Skill v0.1 (Tier 2 — research-verified, reviewer sign-off pending)

Whenever asked about Uruguay social-security (BPS) contributions for e…

PayrollUruguaySource-cited draft
Luxembourg VAT Return

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

VAT / GSTLuxembourgSource-cited draft
MD Income Tax

Whenever asked about Maryland individual income tax. Trigger on phrase…

Income TaxMarylandSource-cited draft
Belize Personal Income Tax

Source-cited draft: personal income tax for Belize (tax year 2025) — r…

Income TaxBelizeSource-cited draft
Belize Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Belize (tax yea…

PayrollBelizeSource-cited draft
MN PayrollPayrollMinnesotaSource-cited draft
Curacao Personal Income Tax

Source-cited draft: personal income tax for Curacao (tax year 2025) — …

Income TaxCuraçaoSource-cited draft
US Self Employed Health Insurance

Tier 2 content skill for computing the self-employed health insurance …

Income TaxUnited StatesAttested by another accountant
NL Income Tax

Whenever asked about Netherlands income tax for self-employed individu…

Income TaxNetherlandsSource-cited draft
Cuba Personal Income Tax

Source-cited draft: personal income tax for Cuba (tax year 2025) — rat…

Income TaxCubaSource-cited draft
Jordan GST

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

VAT / GSTJordanSource-cited draft
Zimbabwe VAT

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

VAT / GSTZimbabweSource-cited draft
Bahamas Company Formation & Entity Choice

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

Company FormationBahamasSource-cited draft

United Kingdom

27 Guides · Reviewed by: James Power

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