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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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— do not use for current work.
NameDomainJurisdictionStatus
JP Nonpermanent Resident

Japan non-permanent resident regime: foreign income taxed only if remi…

—JapanSource-cited draft
QC Individual Return

Whenever asked about Quebec provincial income tax (TP-1) for a self-em…

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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

Income Tax
Canada
Source-cited draft
Australia Financial Statements

When preparing, reviewing, or advising on annual financial statements …

Financial StatementsAustraliaSource-cited draft
NE Income Tax

Whenever asked about Nebraska individual income tax for self-employed …

Income TaxNebraskaSource-cited draft
Brunei Company Formation & Entity Choice

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

Company FormationBruneiSource-cited draft
NJ Income Tax

Whenever asked about New Jersey individual income tax for self-employe…

Income TaxNew JerseySource-cited draft
Slovenia Social Security Contributions (prispevki za socialno varnost) -- Payroll & Self-Employed

Whenever asked about Slovenia social security contributions (prispevki…

PayrollSloveniaSource-cited draft
Burundi Tax Overview

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

Income TaxBurundiSource-cited draft
Canada GST HST

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

VAT / GSTCanadaSource-cited draft
DR Congo Personal Income Tax

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

Income TaxDR CongoSource-cited draft
IN Tax Residency

India tax residency: resident, non-resident, RNOR (Resident but Not Or…

Cross-BorderIndiaSource-cited draft
Croatia Personal Income Tax -- Individuals & Self-Employed

Whenever asked about Croatia (Hrvatska) personal income tax (porez na …

Income TaxCroatiaSource-cited draft
Liechtenstein Personal Income Tax

Source-cited draft: personal income tax for Liechtenstein (tax year 20…

Income TaxLiechtensteinSource-cited draft
Iraq Personal Income Tax

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

Income TaxIraqSource-cited draft
Belize Company Formation & Entity Choice

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

Company FormationBelizeSource-cited draft
Samoa VAT / GST

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

VAT / GSTSamoaSource-cited draft
DE Crypto Tax

Whenever asked about German cryptocurrency taxation. Trigger on phrase…

Crypto TaxGermanySource-cited draft
Singapore Formation

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

Company FormationSingaporeSource-cited draft
Liechtenstein Corporate Income Tax

Source-cited draft: corporate income tax for Liechtenstein (tax year 2…

Income TaxLiechtensteinSource-cited draft
Iran Payroll & Social Contributions

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

PayrollIranSource-cited draft
NL Tax Objection

Whenever asked about Dutch tax objection procedures (bezwaar) or tax c…

—NetherlandsSource-cited draft
Liechtenstein Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Liechtenstein (…

PayrollLiechtensteinSource-cited draft
Cameroon Income Tax -- IRPP

Whenever asked about Cameroon personal income tax (IRPP) for salaried …

Income TaxCameroonSource-cited draft
Liechtenstein Tax Overview

Source-cited draft: tax overview for Liechtenstein (tax year 2025) — r…

Income TaxLiechtensteinSource-cited draft
CO Retail Delivery And Suts—ColoradoSource-cited draft
Iraq Payroll & Social Contributions

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

PayrollIraqSource-cited draft
Germany Tax Optimization

Whenever asked about reducing tax in Germany, tax planning, saving tax…

Tax OptimizationGermanySource-cited draft
RO VAT Return

Redirect — consolidated into romania-vat-return.md in this directory.

VAT / GSTRomaniaSource-cited draft
SG GST Return

This skill has been consolidated. See singapore-gst.md in this directo…

VAT / GSTSingaporeSource-cited draft
Iran Corporate Income Tax

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

Income TaxIranSource-cited draft
Turkmenistan Company Formation & Entity Choice

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

Company FormationTurkmenistanSource-cited draft
Vanuatu Tax Overview

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

Income TaxVanuatuSource-cited draft
Poland Einvoice

Whenever asked about Polish e-invoicing, KSeF, Krajowy System e-Faktur…

E-InvoicingPolandSource-cited draft
IE Prsi Class S

Whenever asked about Irish PRSI Class S contributions for self-employe…

PayrollIrelandSource-cited draft
NC Sales Tax

Whenever asked about North Carolina sales and use tax. Trigger on phra…

VAT / GSTNorth CarolinaSource-cited draft
SC Income Tax

Triggers when the taxpayer is a South Carolina resident sole proprieto…

Income TaxSouth CarolinaSource-cited draft
Uganda Tax Overview

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

Income TaxUgandaSource-cited draft
HI Income Tax

Hawaii Individual Income Tax Return (Form N-11) for sole proprietors a…

Income TaxHawaiiSource-cited draft
Eritrea Corporate Income Tax

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

Income TaxEritreaSource-cited draft
MT Non Dom

For any Malta-resident individual who is not domiciled in Malta. Trigg…

—MaltaSource-cited draft
Bermuda VAT / GST

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

VAT / GSTBermudaSource-cited draft
Sao Tome and Principe Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Sao Tome and Pr…

PayrollSão Tomé and PríncipeSource-cited draft
Nicaragua IVA

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

VAT / GSTNicaraguaSource-cited draft
Cambodia VAT

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

VAT / GSTCambodiaSource-cited draft
Uganda Corporate Income Tax

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

Income TaxUgandaSource-cited draft
Uganda Company Formation & Entity Choice

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

Company FormationUgandaSource-cited draft
Zambia Corporate Income Tax

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

Income TaxZambiaSource-cited draft
Niger Company Formation & Entity Choice

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

Company FormationNigerSource-cited draft
Liberia Company Formation & Entity Choice

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

Company FormationLiberiaSource-cited draft
CZ Social Health

Whenever asked about Czech self-employed social and health insurance c…

PayrollCzech RepublicSource-cited draft

United Kingdom

27 Guides · Reviewed by: James Power

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