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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 · 1548 matching · 241 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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Estonia Personal Income Tax -- Self-Employed (FIE) & Individuals

Whenever asked about Estonia personal income tax for self-employed ind…

Income TaxEstoniaSource-cited draft

Showing 51–100 of 1548 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

Iraq Tax Overview

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

Income TaxIraqSource-cited draft
AU Crypto Tax

Whenever asked about Australian cryptocurrency taxation. Trigger on ph…

Crypto TaxAustraliaSource-cited draft
Tax Residency Planning

Personal tax residency rules, the 183-day rule, digital nomad visas, e…

Tax OptimizationInternational / OtherSource-cited draft
PT Foreign Source Treaties

Utilizar esta skill sempre que estejam em causa rendimentos estrangeir…

—PortugalSource-cited draft
Andorra IGI

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

VAT / GSTAndorraSource-cited draft
Ifrs15 Revenue

IFRS revenue recognition under IFRS 15 (Revenue from Contracts with Cu…

—GLOBALSource-cited draft
Fiji Company Formation & Entity Choice

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

Company FormationFijiSource-cited draft
NG Income Tax

Whenever asked about Nigerian personal income tax for self-employed in…

Income TaxNigeriaSource-cited draft
Zimbabwe Payroll & Social Contributions

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

PayrollZimbabweSource-cited draft
US Tx Return Assembly

Final orchestrator skill that assembles the complete federal and Texas…

Income TaxTexasSource-cited draft
CH Federal Income Tax

Whenever asked about Swiss federal income tax (direkte Bundessteuer / …

Income TaxSwitzerlandSource-cited draft
US Tx Freelance Intake

When a user asks for help preparing their US federal tax return AND me…

Income TaxTexasSource-cited draft
Estonia Company Formation & Entity Choice

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

Company FormationEstoniaSource-cited draft
Japan Payroll

Whenever asked about Japanese payroll, income tax withholding (源泉徴収 ge…

PayrollJapanSource-cited draft
Shipping Aviation Tonnage Tax

Whenever a shipping company, vessel operator, ship owner, ship manager…

Income TaxGLOBALSource-cited draft
Wealth Tax Matrix

Whenever an individual asks about annual net wealth tax exposure. Trig…

Cross-BorderGLOBALSource-cited draft
Tax Controversy Map Apa

Whenever a taxpayer faces a tax authority enquiry, audit, assessment, …

Cross-BorderGLOBALSource-cited draft
BE VAT Return

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

VAT / GSTBelgiumSource-cited draft
RO Cas Cass

Whenever asked about Romanian self-employed social and health contribu…

—RomaniaSource-cited draft
Cayman Islands Tax Overview

Source-cited draft: tax overview for Cayman Islands (tax year 2025) — …

Income TaxCayman IslandsSource-cited draft
Bolivia IVA

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

VAT / GSTBoliviaSource-cited draft
AR Income Tax

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

Income TaxArkansasSource-cited draft
Saf T Realtime Ereporting Matrix

Whenever a tax preparer, ERP implementer, or e-invoicing project asks …

Cross-BorderGLOBALSource-cited draft
Guatemala Corporate Income Tax

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

Income TaxGuatemalaSource-cited draft
KE Nhif Nssf

Whenever asked about Kenyan social contributions for self-employed ind…

—KenyaSource-cited draft
DE Rental Income

Whenever asked about German rental income taxation (Vermietung und Ver…

Income TaxGermanySource-cited draft
Nevada Sales Tax

Whenever asked about Nevada sales and use tax. Trigger on phrases like…

VAT / GSTNevadaSource-cited draft
Papua New Guinea Corporate Income Tax

Source-cited draft: corporate income tax for Papua New Guinea (tax yea…

Income TaxPapua New GuineaSource-cited draft
Kuwait VAT / GST

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

VAT / GSTKuwaitSource-cited draft
Ghana Pit

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

Income TaxGhanaSource-cited draft
CZ Income Tax

Whenever asked about Czech income tax for self-employed individuals (O…

Income TaxCzech RepublicSource-cited draft
Georgia Corporate Income Tax

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

Income TaxGeorgiaSource-cited draft
SE Income Tax

Whenever asked about Swedish income tax for self-employed individuals …

Income TaxSwedenSource-cited draft
US Federal - Cost Segregation

Accelerate depreciation by subcategorizing

—US FederalSource-cited draft
RU Bookkeeping

Whenever asked about record-keeping, bookkeeping, or accounting obliga…

BookkeepingRussiaSource-cited draft
EG Financial Statements

Whenever asked about Egyptian financial statements, financial reportin…

Financial StatementsEgyptSource-cited draft
Cayman Tax

Whenever asked about Cayman Islands taxation or the absence of direct …

Income TaxCayman IslandsSource-cited draft
AU Payg Instalments

Whenever asked about Australian PAYG Instalments for sole traders. Tri…

PayrollAustraliaSource-cited draft
France Tax Optimization

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

Tax OptimizationFranceSource-cited draft
Uzbekistan Payroll

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

PayrollUzbekistanSource-cited draft
Ecuador Social Security Contributions (IESS) and Personal Income Tax

Whenever asked about Ecuador social security contributions (IESS), pay…

PayrollEcuadorSource-cited draft
China Pit

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

Income TaxChinaSource-cited draft
Latvia Mandatory State Social Insurance Contributions (VSAOI) -- Social Contributions

Whenever asked about Latvia mandatory state social insurance contribut…

PayrollLatviaSource-cited draft
CZ VAT Return

Redirect — consolidated into czech-republic-vat-return.md in this dire…

VAT / GSTCzech RepublicSource-cited draft
Serbia Personal Income Tax -- Self-Employed & Individuals

Whenever asked about Serbia (Republic of Serbia) personal income tax f…

Income TaxSerbiaSource-cited draft
NZ Income Tax Ir3

Whenever asked about New Zealand income tax for self-employed individu…

Income TaxNew ZealandSource-cited draft
North Macedonia Tax Overview

Source-cited draft: tax overview for North Macedonia (tax year 2025) —…

Income TaxNorth MacedoniaSource-cited draft
DE Crypto Tax

Whenever asked about German cryptocurrency taxation. Trigger on phrase…

Crypto TaxGermanySource-cited draft
Togo Corporate Income Tax

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

Income TaxTogoSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner