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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
es-corporate-tax

Use this skill whenever asked about Spanish corporate income tax (Impu…

Income TaxSpainSource-cited draft

Showing 1–50 of 674 skills

Page 1 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

za-capital-gains

South Africa capital gains tax: 40% inclusion rate for individuals, an…

Income TaxSouth AfricaSource-cited draft
us-s-corp-election-decision

Tier 2 content skill for evaluating whether a US sole proprietor or si…

Income TaxUS FederalAccountant-verified
no-capital-gains

Norway capital gains tax: 22% rate, shield deduction (skjermingsfradra…

Income TaxNorwaySource-cited draft
in-professional-tax

Use this skill whenever asked about Indian professional tax (professio…

Income TaxIndiaAccountant-verified
ar-monotributo

Use this skill whenever asked about the Argentine Monotributo simplifi…

Income TaxArgentinaSource-cited draft
fr-personal-income-tax

Comprehensive French personal income tax (impôt sur le revenu / IR) gu…

Income TaxFranceSource-cited draft
au-rental-property

Use this skill whenever asked about Australian rental property income …

Income TaxAustraliaSource-cited draft
be-income-tax

Use this skill whenever asked about Belgian income tax (Personenbelast…

Income TaxBelgiumSource-cited draft
au-sole-trader-schedule

Australian sole trader business schedule (Business and Professional It…

Income TaxAustraliaSource-cited draft
us-ny-return-assembly

Final orchestrator skill that assembles the complete federal and New Y…

Income TaxNew YorkSource-cited draft
br-return-assembly

Skill orquestrador final que monta o pacote completo de declarações do…

Income TaxBrazilSource-cited draft
ca-freelance-intake

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

Income TaxCanadaSource-cited draft
us-tax-workflow-base

Tier 1 workflow base for US federal income tax skills serving sole pro…

Income TaxUS FederalSource-cited draft
ar-income-tax

Use this skill whenever asked about Arkansas individual income tax for…

Income TaxArkansasSource-cited draft
Estonia Personal Income Tax -- Self-Employed (FIE) & Individuals

Use this skill whenever asked about Estonia personal income tax for se…

Income TaxEstoniaSource-cited draft
nu-individual-return

Use this skill whenever asked about Nunavut territorial income tax for…

Income TaxCanadaSource-cited draft
china-pit

Use this skill whenever asked to prepare, review, or classify transact…

Income TaxChinaSource-cited draft
ghana-pit

Use this skill whenever asked to prepare, review, or classify transact…

Income TaxGhanaSource-cited draft
cayman-tax

Use this skill whenever asked about Cayman Islands taxation or the abs…

Income TaxCayman IslandsSource-cited draft
eg-income-tax

Use this skill whenever asked about Egyptian personal income tax for r…

Income TaxEgyptSource-cited draft
Slovenia Income Tax -- Self-Employed and Individuals

Use this skill whenever asked about Slovenia (Slovenija) personal inco…

Income TaxSloveniaSource-cited draft
de-estimated-tax

Use this skill whenever asked about German estimated income tax prepay…

Income TaxGermanySource-cited draft
it-estimated-tax

Use this skill whenever asked about Italian estimated income tax advan…

Income TaxItalySource-cited draft
ca-540-individual-return

Tier 2 content skill for preparing California Form 540 (Resident Incom…

Income TaxCaliforniaSource-cited draft
sa-corporate-tax

ALWAYS read this skill before touching any Saudi Arabian corporate inc…

Income TaxSaudi Arabia9/10 facts verified
eg-sme-tax

Use this skill whenever asked about Egypt's simplified or SME tax regi…

Income TaxEgyptSource-cited draft
it-income-tax

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

Income TaxItalySource-cited draft
jp-income-tax

Use this skill whenever asked about Japanese income tax for self-emplo…

Income TaxJapanSource-cited draft
ng-income-tax

Use this skill whenever asked about Nigerian personal income tax for s…

Income TaxNigeriaSource-cited draft
us-tx-freelance-intake

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

Income TaxTexasSource-cited draft
ng-freelance-intake

ALWAYS USE THIS SKILL when a user asks for help preparing a Nigerian t…

Income TaxNigeriaSource-cited draft
mx-estimated-tax

Use this skill whenever asked about Mexican provisional income tax pay…

Income TaxMexicoSource-cited draft
nl-deductions

Use this skill whenever asked about Dutch tax deductions and special s…

Income TaxNetherlandsSource-cited draft
statutory-audit-workflow-base

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

Income TaxGLOBALSource-cited draft
es-estimated-tax

Use this skill whenever asked about Spanish estimated income tax payme…

Income TaxSpainSource-cited draft
thailand-pit

Use this skill whenever asked to prepare, review, or classify transact…

Income TaxThailandSource-cited draft
us-ca-return-assembly

Final orchestrator skill that assembles the complete federal and Calif…

Income TaxCaliforniaSource-cited draft
ca-fed-instalments

Use this skill whenever asked about Canadian federal quarterly instalm…

Income TaxCanadaAccountant-verified
mi-corporate-income-taxIncome TaxMichiganSource-cited draft
us-federal-return-assembly

Tier 2 orchestrator skill that assembles the complete federal income t…

Income TaxUS FederalSource-cited draft
sa-freelance-intake

ALWAYS USE THIS SKILL when a user asks for help with Saudi tax/Zakat c…

Income TaxSaudi ArabiaSource-cited draft
ca-estimated-tax-540es

Tier 2 California content skill for computing California estimated tax…

Income TaxCaliforniaSource-cited draft
sa-return-assembly

Use this skill whenever asked to assemble, finalize, or package a Saud…

Income TaxSaudi ArabiaSource-cited draft
ct-income-tax

Use this skill whenever asked about Connecticut individual income tax …

Income TaxConnecticutSource-cited draft
cn-stamp-tax

使用本技能处理一切与中国印花税相关的问题。触发短语包括"中国印花税"、"印花税法 2022"、"合同印花税"、"证券交易印花税"、"权证许可…

Income TaxChinaSource-cited draft
Morocco Income Tax (IR)

Use this skill whenever asked about Morocco personal income tax — the …

Income TaxMoroccoSource-cited draft
ru-income-tax

Use this skill whenever asked about Russian personal income tax (НДФЛ …

Income TaxRussiaSource-cited draft
uk-capital-gains-sa108

Use this skill whenever asked about UK capital gains tax for individua…

Income TaxUnited KingdomAccountant-verified
ie-return-assembly

Use this skill whenever asked to assemble, finalize, or package an Iri…

Income TaxIrelandSource-cited draft

Canada

17 skills · Lead: Edgar Lautsyus · 11 verified

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