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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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Source-cited draft
— 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
BC PST

For British Columbia Provincial Sales Tax — 7% non-harmonized retail s…

—CanadaSource-cited draft
Brunei Tax

Whenever asked about Brunei Darussalam tax obligations. Trigger on phr…

Showing 1401–1450 of 1727 Guides

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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

Income Tax
Brunei
Source-cited draft
Norway Company Formation & Entity Choice

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

Company FormationNorwaySource-cited draft
CL Social Contributions

Whenever asked about Chilean self-employed social contributions (cotiz…

PayrollChileSource-cited draft
AU Medicare Levy

Whenever asked about the Australian Medicare Levy, Medicare Levy Surch…

PayrollAustraliaSource-cited draft
Dominican Republic Customs (Aduanas)

Dominican Republic Customs (Aduanas) — accountant-verified rules from …

Cross-BorderDominican RepublicAccountant-reviewed
Iran VAT

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

VAT / GSTIranSource-cited draft
DC Sales Tax

Whenever asked about District of Columbia sales tax, DC OTR filings. T…

VAT / GSTDistrict of ColumbiaSource-cited draft
JP Bookkeeping

Whenever asked about bookkeeping or journal entries for a self-employe…

BookkeepingJapanSource-cited draft
CO Income Tax

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

Income TaxColoradoSource-cited draft
Bolivia Tax Optimization

Whenever asked about reducing tax in Bolivia, tax planning, or legal s…

Tax OptimizationBoliviaSource-cited draft
CT Payroll

Tier 2 Connecticut content skill for employer payroll compliance cover…

PayrollConnecticutSource-cited draft
NL Income Tax

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

Income TaxNetherlandsSource-cited draft
Dominican Republic Real Estate Tax (IPI) & Property Transfer

Dominican Republic Real Estate Tax (IPI) & Property Transfer — account…

Estate & Wealth TaxDominican RepublicAccountant-reviewed
DE Formation

Tier 2 Delaware content skill for entity formation covering tax year 2…

Company FormationDelawareSource-cited draft
Belgium Bookkeeping

Whenever asked about Belgian bookkeeping, chart of accounts, PCMN/MAR,…

BookkeepingBelgiumSource-cited draft
Australia Formation

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

Company FormationAustraliaSource-cited draft
Latvia VAT Return

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

VAT / GSTLatviaSource-cited draft
GA Payroll

Tier 2 Georgia content skill for employer payroll compliance covering …

PayrollGeorgia (US)Source-cited draft
PL Zus Contributions

Whenever asked about Polish ZUS (Zakład Ubezpieczeń Społecznych) socia…

PayrollPolandSource-cited draft
Dominican Republic Asset Tax (Impuesto sobre Activos)

Dominican Republic Asset Tax (Impuesto sobre Activos) — accountant-ver…

Estate & Wealth TaxDominican RepublicAccountant-reviewed
ES VAT Return

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

VAT / GSTSpainSource-cited draft
CO Payroll

Tier 2 Colorado content skill for employer payroll compliance covering…

PayrollColoradoSource-cited draft
Statutory Audit Workflow Base

Tier 1 workflow base for statutory audit skills. Covers the audit life…

Income TaxGLOBALSource-cited draft
Sri Lanka VAT

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

VAT / GSTSri LankaAccountant-reviewed
UA Bookkeeping

Ukrainian sole-proprietor (ФОП) record-keeping and bookkeeping: the in…

BookkeepingUkraineSource-cited draft
Dominican Republic Capital Gains Tax

Dominican Republic Capital Gains Tax — accountant-verified rules from …

Income TaxDominican RepublicAccountant-reviewed
US Sales Tax

Whenever asked about United States sales tax, use tax, sales tax nexus…

VAT / GSTUS FederalAccountant-reviewed
OH Sales Tax

Whenever asked about Ohio sales and use tax, ODT filings, Ohio CAT, Oh…

VAT / GSTOhioSource-cited draft
US Quarterly Estimated Tax

Whenever asked about US federal quarterly estimated income tax payment…

Income TaxUS FederalAccountant-reviewed
Dominican Republic Selective Consumption Tax (ISC)

Dominican Republic Selective Consumption Tax (ISC) — accountant-verifi…

VAT / GSTDominican RepublicAccountant-reviewed
Iraq Tax

Whenever asked about Iraq taxation, sales tax, or the absence of VAT i…

Income TaxIraqSource-cited draft
References—VietnamSource-cited draft
Ghana VAT

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

VAT / GSTGhanaSource-cited draft
New Zealand GST

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

VAT / GSTNew ZealandSource-cited draft
KS Income Tax

Whenever asked about Kansas individual income tax. Trigger on phrases …

Income TaxKansasSource-cited draft
MA Sales Tax

Whenever asked about Massachusetts sales and use tax. Trigger on phras…

VAT / GSTMassachusettsSource-cited draft
OK Income Tax

Triggers when the taxpayer is an Oklahoma resident sole proprietor or …

Income TaxOklahomaSource-cited draft
Australia Transfer Pricing

Whenever asked about Australia transfer pricing rules, documentation r…

Transfer PricingAustraliaSource-cited draft
Romania Company Formation & Entity Choice

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

Company FormationRomaniaSource-cited draft
GR Income Tax

Whenever asked about Greek income tax for self-employed individuals (ε…

Income TaxGreeceSource-cited draft
Czech Republic Company Formation & Entity Choice

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

Company FormationCzech RepublicSource-cited draft
US State New Hire Reporting Matrix

Tier 2 US federal-level reference skill providing the 50-state matrix …

—US FederalSource-cited draft
US Pl 86 272 Income Tax Nexus

Tier 2 US federal content skill for Public Law 86-272 (15 USC §§381-38…

Income TaxUS FederalSource-cited draft
FR Return Assembly

Final orchestrator skill that assembles the complete French filing pac…

Income TaxFranceSource-cited draft
US Estate Gift 706 709

Tier 2 US federal content skill for the unified estate, gift, and gene…

—US FederalAccountant-reviewed
Latvia Personal Income Tax

Whenever asked about Latvia personal income tax (iedzīvotāju ienākuma …

Income TaxLatviaSource-cited draft
Georgia VAT

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

VAT / GSTGeorgiaAccountant-reviewed
ID Einvoice Coretax

Whenever asked about filing, invoicing, or submitting any Indonesian t…

E-InvoicingIndonesiaAccountant-reviewed
Bangladesh Pit

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

Income TaxBangladeshSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner