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Open tax rules, trusted AI workflows, and named accountant review where available.

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OpenAccountants provides general tax and accounting reference material and AI-assisted working-paper tools. It is not tax, legal, accounting, or financial advice. Outputs must be reviewed by a qualified professional before filing, payment, or action.

OpenAccountants provides general tax and accounting reference material and AI-assisted working-paper tools. It is not tax, legal, accounting, or financial advice. Outputs must be reviewed by a qualified professional before filing, payment, or action.

© 2026 OpenAccountants. All rights reserved.

The open rules layer

Open tax rules for AI workflows

Browse the open tax and accounting skills that power OpenAccountants workflows. Each skill is designed to be cited, inspectable, machine-readable, and usable by AI agents. Some are source-cited drafts. Some have named accountant review. All are part of the open rules layer.

The rules are open. The trust layer shows who reviewed them.

1754 skills · 674 matching · 242 jurisdictions

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
sg-income-tax

Use this skill whenever asked about Singapore income tax for self-empl…

Income TaxSingaporeSource-cited draft

Showing 51–100 of 674 skills

PreviousPage 2 of 14Next

Licensed accountant? Help build your country's tax rules.

1754 open skills across 242 jurisdictions. Verified by a licensed accountant in 20 countries. Download your country's workbook, review in Excel, get named on the site and in our MCP integrations.

20 jurisdictions with a lead verifier · 222 open for contributors

GLOBAL

36 skills · Looking for contributors

Australia

14 skills · Looking for contributors

Germany

11 skills · Looking for contributors

Japan

10 skills · Looking for contributors

US Federal

22 skills · Lead: Amir Pelinkovic · 9 verified

corporate-income-tax-workflow-base

Tier 1 workflow base for corporate income tax skills serving small, me…

Income TaxGLOBALSource-cited draft
es-freelance-intake

ALWAYS USE THIS SKILL when a user asks for help preparing their Spain …

Income TaxSpainSource-cited draft
es-capital-gains

Spain capital gains tax: savings income rates (19%–28%), holding perio…

Income TaxSpainSource-cited draft
tx-margin-taxIncome TaxTexasSource-cited draft
es-income-tax

Use this skill whenever asked about Spanish personal income tax (IRPF …

Income TaxSpainSource-cited draft
us-qbi-deduction

Layer-2 content skill for computing the §199A Qualified Business Incom…

Income TaxUS FederalAccountant-verified
mx-freelance-intake

Use this skill when onboarding a Mexican persona física con actividad …

Income TaxMexicoSource-cited draft
ut-income-tax

Use this skill whenever asked about Utah individual income tax, Utah F…

Income TaxUtahSource-cited draft
uk-student-loan-repayment

Use this skill whenever asked about UK Student Loan repayment for self…

Income TaxUnited KingdomAccountant-verified
Armenia Personal Income Tax -- Self-Employed & Individuals

Use this skill whenever asked about Armenian personal income tax for i…

Income TaxArmeniaSource-cited draft
Ethiopia Income Tax -- Employment & Self-Employed

Use this skill whenever asked about Ethiopia (ET) personal or business…

Income TaxEthiopiaSource-cited draft
Peru Income Tax (Impuesto a la Renta — Rentas de Trabajo)

Use this skill whenever asked about Peru income tax (Impuesto a la Ren…

Income TaxPeruSource-cited draft
nl-freelance-intake

ALWAYS USE THIS SKILL when a user asks for help preparing their Nether…

Income TaxNetherlandsSource-cited draft
ga-net-worth-tax

Tier 2 Georgia content skill for the Net Worth Tax under Form 600 Part…

Income TaxGeorgia (US)Source-cited draft
de-freelance-intake

ALWAYS USE THIS SKILL when a user asks for help preparing their German…

Income TaxGermanySource-cited draft
ia-income-tax

Iowa Individual Income Tax Return (Form IA 1040) for sole proprietors …

Income TaxIowaSource-cited draft
Sri Lanka Capital Gains Tax (CGT)

Sri Lanka Capital Gains Tax on realisation of investment assets — rate…

Income TaxSri LankaAccountant-verified
nz-capital-gains

New Zealand capital gains: no general CGT, but bright-line test on res…

Income TaxNew ZealandSource-cited draft
ca-capital-gains

Canada capital gains tax: inclusion rate (50% / 2/3 above $250k from 2…

Income TaxCanadaSource-cited draft
Sri Lanka Provisional Tax / Advance Income Tax (AIT)

Sri Lanka provisional tax via Advance Income Tax (AIT) quarterly insta…

Income TaxSri LankaAccountant-verified
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
Montenegro Personal Income Tax -- Self-Employed

Use this skill whenever asked about Montenegro personal income tax (po…

Income TaxMontenegroSource-cited draft
Mozambique Personal Income Tax (IRPS)

Use this skill whenever asked about Mozambique personal income tax (IR…

Income TaxMozambiqueSource-cited draft
Burkina Faso Corporate Tax (IS)

Use this skill for Burkina Faso corporate income tax (Impôt sur les So…

Income TaxBurkina FasoSource-cited draft
Paraguay Personal Income Tax (IRP) -- Self-Employed

Use this skill whenever asked about Paraguay personal income tax (IRP)…

Income TaxParaguaySource-cited draft
fi-income-tax

Use this skill whenever asked about Finland income tax for self-employ…

Income TaxFinlandSource-cited draft
Algeria Income Tax (IRG) -- Employee & Self-Employed

Use this skill whenever asked about Algeria personal income tax (IRG -…

Income TaxAlgeriaSource-cited draft
ca-fed-t1-return

Use this skill whenever asked about a Canadian federal T1 General indi…

Income TaxCanadaAccountant-verified
us-schedule-c-and-se-computation

Tier 2 content skill for computing Schedule C bottom line, Form 8829 h…

Income TaxUS FederalAccountant-verified
il-corporate-tax

Use this skill when advising on Israeli corporate tax strategy, profit…

Income TaxIsraelSource-cited draft
de-rental-income

Use this skill whenever asked about German rental income taxation (Ver…

Income TaxGermanySource-cited draft
id-freelance-intake

ALWAYS USE THIS SKILL when a user asks for help preparing a 2025 Indon…

Income TaxIndonesiaSource-cited draft
ns-individual-return

Use this skill whenever asked about Nova Scotia provincial individual …

Income TaxCanadaSource-cited draft
hk-salaries-tax

Use this skill whenever asked about Hong Kong salaries tax. Trigger on…

Income TaxHong KongSource-cited draft
ma-auto-entrepreneur

Use this skill whenever asked about Morocco's auto-entrepreneur regime…

Income TaxMoroccoSource-cited draft
dk-income-tax

Use this skill whenever asked about Danish income tax for self-employe…

Income TaxDenmarkSource-cited draft
sc-income-tax

Triggers when the taxpayer is a South Carolina resident sole proprieto…

Income TaxSouth CarolinaSource-cited draft
Botswana Tax Overview

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

Income TaxBotswanaSource-cited draft
nz-income-tax-ir3

Use this skill whenever asked about New Zealand income tax for self-em…

Income TaxNew ZealandSource-cited draft
se-income-tax

Use this skill whenever asked about Swedish income tax for self-employ…

Income TaxSwedenSource-cited draft
Botswana Personal Income Tax

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

Income TaxBotswanaSource-cited draft
se-capital-gains

Sweden capital gains tax: 30% on capital income, ISK investment saving…

Income TaxSwedenSource-cited draft
Botswana Corporate Income Tax

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

Income TaxBotswanaSource-cited draft
Costa Rica Income Tax -- Self-Employed

Use this skill whenever asked about Costa Rica income tax for self-emp…

Income TaxCosta RicaSource-cited draft
br-simples-nacional

[PT-BR] Use esta skill sempre que for solicitado tratar do Simples Nac…

Income TaxBrazilAccountant-verified
us-ny-freelance-intake

ALWAYS USE THIS SKILL when a user asks for help preparing their US fed…

Income TaxNew YorkSource-cited draft
ky-income-tax

Use this skill whenever asked about Kentucky individual income tax. Tr…

Income TaxKentuckySource-cited draft
ca-pte-elective-tax

Tier 2 California content skill for the Pass-Through Entity Elective T…

Income TaxCaliforniaSource-cited draft
Afghanistan Tax Overview

Source-cited draft: tax overview for Afghanistan (tax year 2025) — rat…

Income TaxAfghanistanSource-cited draft

Canada

17 skills · Lead: Edgar Lautsyus · 11 verified

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