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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.
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— do not use for current work.
NameDomainJurisdictionStatus
NL Individual Return

Whenever asked about Newfoundland and Labrador provincial individual i…

Income TaxCanadaSource-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

VAT Place Of Supply Master

The definitive place-of-supply reference for cross-border VAT on servi…

Cross-BorderInternational / OtherSource-cited draft
Saudi Arabia VAT

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

VAT / GSTSaudi ArabiaAccountant-reviewed
EG Tax Optimization

Whenever asked about legitimate tax optimization, tax planning, or how…

Tax OptimizationEgyptSource-cited draft
JP Consumption Tax

Whenever asked about Japanese Consumption Tax (消費税 / JCT) for self-emp…

VAT / GSTJapanSource-cited draft
SG Cpf Medisave

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

PayrollSingaporeSource-cited draft
United Arab Emirates Payroll & Social Contributions

Source-cited draft: payroll & social contributions for United Arab Emi…

PayrollUnited Arab EmiratesSource-cited draft
EL Salvador IVA

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

VAT / GSTEl SalvadorSource-cited draft
Libya VAT / GST

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

VAT / GSTLibyaSource-cited draft
NU Individual Return

Whenever asked about Nunavut territorial income tax for a self-employe…

Income TaxCanadaSource-cited draft
ON Individual Return

Whenever asked about Ontario provincial income tax for a self-employed…

Income TaxCanadaSource-cited draft
Benin Company Formation & Entity Choice

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

Company FormationBeninSource-cited draft
NL Return Assembly

Final orchestrator skill that assembles the complete Netherlands filin…

Income TaxNetherlandsSource-cited draft
Guyana Corporate Income Tax

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

Income TaxGuyanaSource-cited draft
Benin Personal Income Tax

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

Income TaxBeninSource-cited draft
Angola Company Formation & Entity Choice

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

Company FormationAngolaSource-cited draft
UK Bookkeeping

Whenever asked about UK bookkeeping for sole traders, micro-entities, …

BookkeepingUnited KingdomSource-cited draft
Chad VAT / GST

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

VAT / GSTChadSource-cited draft
Italy Bookkeeping

Whenever asked about bookkeeping, chart of accounts, Piano dei Conti, …

BookkeepingItalySource-cited draft
Burundi VAT / GST

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

VAT / GSTBurundiSource-cited draft
ID Tax Optimization

Whenever asked about Indonesian tax planning, regime selection, or yea…

Tax OptimizationIndonesiaSource-cited draft
Andorra Personal Income Tax

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

Income TaxAndorraSource-cited draft
FR Freelance Intake

When a user asks for help preparing their French tax returns AND menti…

Income TaxFranceSource-cited draft
Burundi Payroll & Social Contributions

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

PayrollBurundiSource-cited draft
CN Iit

在处理任何中国个人所得税(IIT)事项之前,必须先阅读本技能。本技能适用于中国税务居民个人和非居民个人的个人所得税申报、计算与审核工作,包括…

—ChinaSource-cited draft
Angola Corporate Income Tax

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

Income TaxAngolaSource-cited draft
Angola VAT / GST

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

VAT / GSTAngolaSource-cited draft
Burundi Company Formation & Entity Choice

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

Company FormationBurundiSource-cited draft
Burundi Personal Income Tax

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

Income TaxBurundiSource-cited draft
Benin VAT / GST

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

VAT / GSTBeninSource-cited draft
Lithuania Payroll & Social Contributions

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

PayrollLithuaniaSource-cited draft
Uzbekistan Payroll

Whenever asked about Uzbekistan (the Republic of Uzbekistan — Oʻzbekis…

PayrollUzbekistanSource-cited draft
Bhutan VAT / GST

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

VAT / GSTBhutanSource-cited draft
GA Corporate And Ptet—Georgia (US)Source-cited draft
WI Sales Tax

Whenever asked about Wisconsin sales tax, Wisconsin use tax, Wisconsin…

VAT / GSTWisconsinSource-cited draft
Global Cloud Infrastructure

Pattern library for cloud, infrastructure, and developer tool vendors …

—GLOBALSource-cited draft
OK Sales Tax

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

VAT / GSTOklahomaSource-cited draft
Argentina Corporate Income Tax

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

Income TaxArgentinaSource-cited draft
Maldives GST

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

VAT / GSTMaldivesSource-cited draft
Angola Payroll & Social Contributions

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

PayrollAngolaSource-cited draft
CN Corporate Tax

当被问及中国企业所得税(CIT)相关事宜时使用本技能。触发关键词包括:"中国企业所得税"、"CIT 25%"、"小型微利企业"、"高新技术企…

Income TaxChinaSource-cited draft
Belgium Einvoice

Whenever asked about e-invoicing in Belgium, Peppol B2B mandate, Mercu…

E-InvoicingBelgiumSource-cited draft
Georgia (Country) Social Contributions & Funded Pension

Whenever asked about social contributions, social security, or the man…

PayrollGeorgiaSource-cited draft
Bahamas Personal Income Tax

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

Income TaxBahamasSource-cited draft
Samoa Personal Income Tax

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

Income TaxSamoaSource-cited draft
Uzbekistan Social Tax & Payroll Contributions

Whenever asked about Uzbekistan employer social tax (social insurance …

PayrollUzbekistanSource-cited draft
NC Income Tax

Whenever asked about North Carolina individual income tax for self-emp…

Income TaxNorth CarolinaSource-cited draft
Laos Payroll & Social Contributions

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

PayrollLaosSource-cited draft
Cameroon Income Tax -- IRPP

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

Income TaxCameroonSource-cited draft
UA Einvoice

Whenever asked about Ukrainian electronic invoicing and digital tax re…

E-InvoicingUkraineSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner