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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.

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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.

1752 Guides · 241 jurisdictions

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— reviewed as general reference material by a named licensed practitioner.
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Turkey Corporate Income Tax

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

Income TaxTurkeySource-cited draft

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1752 Guides across 241 jurisdictions. You do not need to review an entire country — choose a Guide within your expertise and get credited as an Open Accountants Partner on the ones you review.

GLOBAL

61 Guides · Awaiting review

US Federal

58 Guides · Awaiting review

Spain

22 Guides · Awaiting review

Australia

20 Guides · Awaiting review

Canada

35 Guides · Partner: Edgar Lautsyus

US S Corp Election Decision

Tier 2 content skill for evaluating whether a US sole proprietor or si…

Income TaxUS FederalAccountant-reviewed
IL Corporate Tax

When advising on Israeli corporate tax strategy, profit extraction met…

Income TaxIsraelSource-cited draft
Charity Nonprofit

Whenever a charity, nonprofit, foundation, NGO, religious organisation…

—GLOBALSource-cited draft
ES Modelo 111

Whenever asked about Spanish Modelo 111 (quarterly withholdings on pro…

Income TaxSpainSource-cited draft
Turkey Payroll & Social Contributions

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

PayrollTurkeySource-cited draft
Taiwan Corporate Income Tax

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

Income TaxTaiwanSource-cited draft
Armenia Tax Overview

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

Income TaxArmeniaSource-cited draft
Uzbekistan Corporate Income Tax

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

Income TaxUzbekistanSource-cited draft
Trinidad and Tobago Corporate Income Tax

Source-cited draft: corporate income tax for Trinidad and Tobago (tax …

Income TaxTrinidad and TobagoSource-cited draft
ID Income Tax

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

Income TaxIndonesiaAccountant-reviewed
Uruguay Tax Overview

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

Income TaxUruguaySource-cited draft
MD Sales Tax

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

VAT / GSTMarylandSource-cited draft
Isle Of Man VAT

Whenever asked about Isle of Man VAT, VAT registration, VAT returns, o…

VAT / GSTIMSource-cited draft
Vietnam Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Vietnam (tax ye…

PayrollVietnamSource-cited draft
British Virgin Islands VAT / GST

Source-cited draft: vat / gst for British Virgin Islands (tax year 202…

VAT / GSTBritish Virgin IslandsSource-cited draft
British Virgin Islands Company Formation & Entity Choice

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

Company FormationBritish Virgin IslandsSource-cited draft
LA Income Tax

Whenever asked about Louisiana individual income tax. Trigger on phras…

Income TaxLouisianaSource-cited draft
Jamaica Gct

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

VAT / GSTJamaicaSource-cited draft
Laos VAT

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

VAT / GSTLaosSource-cited draft
QC Corporate Tax Co17

Whenever asked about Quebec corporate income tax. Quebec administers i…

—CanadaSource-cited draft
IE VAT Return

This skill has been consolidated. See ireland-vat-return.md in this di…

VAT / GSTIrelandSource-cited draft
Vietnam Company Formation & Entity Choice

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

Company FormationVietnamSource-cited draft
Senegal Social Security & Payroll Contributions

Whenever asked about Senegal social security / social insurance contri…

PayrollSenegalSource-cited draft
Israel VAT

Whenever asked to prepare, review, or classify transactions for an Isr…

VAT / GSTIsraelSource-cited draft
NV Commerce And Mbt—NevadaSource-cited draft
NG Formation

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

Company FormationNigeriaSource-cited draft
NY Mctmt—New YorkSource-cited draft
Morocco VAT

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

VAT / GSTMoroccoSource-cited draft
NL VAT Return

Redirect — consolidated into netherlands-vat-return.md in this directo…

VAT / GSTNetherlandsSource-cited draft
NZ GST Return

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

VAT / GSTNew ZealandSource-cited draft
Montenegro VAT

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

VAT / GSTMontenegroSource-cited draft
Zimbabwe Tax Overview

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

Income TaxZimbabweSource-cited draft
Oman VAT

Whenever asked to prepare, review, or classify transactions for an Oma…

VAT / GSTOmanSource-cited draft
Zimbabwe Personal Income Tax

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

Income TaxZimbabweSource-cited draft
Paraguay IVA

Whenever asked to prepare, review, or create a Paraguay IVA (Impuesto …

VAT / GSTParaguaySource-cited draft
BC Eht

For British Columbia Employer Health Tax — replaced MSP premiums in 20…

—CanadaSource-cited draft
Png GST

Whenever asked to prepare, review, or create a Papua New Guinea GST re…

VAT / GSTPapua New GuineaSource-cited draft
NC Payroll

Tier 2 North Carolina content skill for employer payroll compliance co…

PayrollNorth CarolinaSource-cited draft
MT Income Tax

Whenever asked about Montana individual income tax for self-employed p…

Income TaxMontanaSource-cited draft
PA Local Eit—PennsylvaniaSource-cited draft
Lebanon VAT

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

VAT / GSTLebanonSource-cited draft
Japan Tax Optimization

When advising on LEGAL tax minimization strategies for Japanese taxpay…

Tax OptimizationJapanSource-cited draft
Qatar Tax

Whenever asked about Qatar indirect tax or VAT status. Qatar does NOT …

Income TaxQatarSource-cited draft
Mauritius VAT

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

VAT / GSTMauritiusSource-cited draft
OH Cat Tax

Triggers when the taxpayer operates a business in Ohio with gross rece…

Income TaxOhioSource-cited draft
OH Cat—OhioSource-cited draft
NM Sales Tax

Whenever asked about New Mexico Gross Receipts Tax (GRT). Trigger on p…

VAT / GSTNew MexicoSource-cited draft
Ecuador Tax Overview

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

Income TaxEcuadorSource-cited draft
RI Income Tax

Triggers when the taxpayer is a Rhode Island resident sole proprietor …

Income TaxRhode IslandSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner