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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.

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

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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— researched and cited, not yet reviewed by a licensed practitioner.
Accountant-reviewed
— reviewed as general reference material by a named licensed practitioner.
Needs update
— flagged for review.
Deprecated
— do not use for current work.
NameDomainJurisdictionStatus
MO Income Tax

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

Income TaxMissouriSource-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

Qatar Company Formation & Entity Choice

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

Company FormationQatarSource-cited draft
Philippines Corporate Income Tax

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

Income TaxPhilippinesAccountant-reviewed
CT Sales Tax

Whenever asked about Connecticut sales and use tax, luxury tax, DRS fi…

VAT / GSTConnecticutSource-cited draft
Portugal Payroll

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

PayrollPortugalSource-cited draft
Rwanda Tax Overview

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

Income TaxRwandaSource-cited draft
Qatar Corporate Income Tax

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

Income TaxQatarSource-cited draft
Trinidad and Tobago Personal Income Tax

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

Income TaxTrinidad and TobagoSource-cited draft
Belize VAT / GST

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

VAT / GSTBelizeSource-cited draft
Romania Tax Overview

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

Income TaxRomaniaSource-cited draft
Chad Company Formation & Entity Choice

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

Company FormationChadSource-cited draft
Cross Border Invoicing Compliance

Cross-border invoicing rules — which country's requirements apply, wha…

Cross-BorderInternational / OtherSource-cited draft
Philippines Company Formation & Entity Choice

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

Company FormationPhilippinesAccountant-reviewed
Slovakia Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Slovakia (tax y…

PayrollSlovakiaSource-cited draft
IP Patent Box Matrix

Whenever a company holding intellectual property asks about preferenti…

Cross-BorderGLOBALSource-cited draft
Slovenia Corporate Income Tax

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

Income TaxSloveniaSource-cited draft
AR Sales Tax

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

VAT / GSTArkansasSource-cited draft
FL Corporate Income TaxIncome TaxFloridaAccountant-reviewed
Senegal Company Formation & Entity Choice

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

Company FormationSenegalSource-cited draft
Central African Republic Tax Overview

Source-cited draft: tax overview for Central African Republic (tax yea…

Income TaxCentral African RepublicSource-cited draft
Slovakia Company Formation & Entity Choice

Source-cited draft: company formation & entity choice for Slovakia (ta…

Company FormationSlovakiaSource-cited draft
Thailand Tax Overview

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

Income TaxThailandSource-cited draft
Dominican Republic Payroll

Whenever asked about Dominican Republic payroll processing for employe…

PayrollDominican RepublicSource-cited draft
Slovenia Company Formation & Entity Choice

Source-cited draft: company formation & entity choice for Slovenia (ta…

Company FormationSloveniaSource-cited draft
HK Salaries Tax

Whenever asked about Hong Kong salaries tax. Trigger on phrases like "…

Income TaxHong KongSource-cited draft
Thailand Corporate Income Tax

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

Income TaxThailandSource-cited draft
Customs Duties Workflow Base

Tier 1 workflow base for customs duty skills. Covers the customs decla…

Cross-BorderGLOBALSource-cited draft
Slovakia Tax Overview

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

Income TaxSlovakiaSource-cited draft
Honduras Payroll

Whenever asked about Honduras payroll processing for employed persons.…

PayrollHondurasSource-cited draft
El Salvador Payroll

Whenever asked about El Salvador payroll processing for employed perso…

PayrollEl SalvadorSource-cited draft
Senegal Tax Overview

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

Income TaxSenegalSource-cited draft
Georgia (Country) Personal Income Tax — Individuals and Self-Employed

Whenever asked about personal income tax in the country of Georgia (Sa…

Income TaxGeorgiaAccountant-reviewed
Turkey Company Formation & Entity Choice

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

Company FormationTurkeySource-cited draft
NG Return Assembly

Whenever asked to assemble, finalize, or package a Nigerian annual tax…

Income TaxNigeriaSource-cited draft
Global Router

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

—GLOBALSource-cited draft
Thailand Company Formation & Entity Choice

Source-cited draft: company formation & entity choice for Thailand (ta…

Company FormationThailandSource-cited draft
DE Capital Gains

For any German capital gains tax question. Trigger on: "Abgeltungsteue…

Income TaxGermanySource-cited draft
Italy Payroll

Whenever asked about Italian payroll processing for employees. Trigger…

PayrollItalySource-cited draft
KY Sales Tax

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

VAT / GSTKentuckySource-cited draft
Tanzania Payroll

Whenever asked about Tanzania payroll processing for employed persons.…

—TanzaniaSource-cited draft
Trinidad and Tobago Tax Overview

Source-cited draft: tax overview for Trinidad and Tobago (tax year 202…

Income TaxTrinidad and TobagoSource-cited draft
Turkey Tax Overview

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

Income TaxTurkeySource-cited draft
BR Estimated Tax

Use esta skill sempre que for solicitado a tratar de pagamentos mensai…

Income TaxBrazilAccountant-reviewed
CA Crypto Tax

Whenever asked about Canadian cryptocurrency taxation. Trigger on phra…

Crypto TaxCanadaAccountant-reviewed
Canada Transfer Pricing

Whenever asked about Canada transfer pricing rules, documentation requ…

Transfer PricingCanadaAccountant-reviewed
MI Sales Tax

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

VAT / GSTMichiganSource-cited draft
MA Social Contributions

Whenever asked about Morocco social contributions for the self-employe…

PayrollMoroccoSource-cited draft
DC Income Tax

District of Columbia Individual Income Tax Return (Form D-40) for sole…

Income TaxDistrict of ColumbiaSource-cited draft
NG Cgt

Whenever asked about Nigerian Capital Gains Tax. Trigger on phrases li…

—NigeriaSource-cited draft
Colombia Tax Overview

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

Income TaxColombiaSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner