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AI makes tax knowledge abundant. OpenAccountants makes tax work trustworthy.

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 · 8 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.

International / Other · 8 skills

Licensed in this market? Help verify these rules and get credited on the ones you sign off.

Join as a contributor
NameDomainJurisdictionStatus
cross-border-invoicing-compliance

Cross-border invoicing rules — which country's requirements apply, wha…

Cross-BorderInternational / OtherSource-cited draft

Showing 1–8 of 8 skills

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

International / Other

6 skills

Looking for contributors.

Jurisdiction page

Help verify these rules and get credited on every one you sign off.

Join as a contributorHow it works
oecd-model-treaty-defaults

OECD Model Tax Convention default provisions for cross-border tax allo…

Cross-BorderInternational / OtherSource-cited draft
cross-border-vat-gst

VAT, GST, and sales tax compliance for international digital businesse…

VAT / GSTInternational / OtherSource-cited draft
forex-controls

Foreign exchange controls and cross-border money movement rules by cou…

Cross-BorderInternational / OtherSource-cited draft
tax-residency-planning

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

Tax OptimizationInternational / OtherSource-cited draft
cross-border-payroll-coordination

Cross-border payroll compliance for companies with employees or contra…

Cross-BorderInternational / OtherSource-cited draft
vat-place-of-supply-master

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

Cross-BorderInternational / OtherSource-cited draft
international-incorporation

International company formation and jurisdiction selection guide for s…

Company FormationInternational / OtherSource-cited draft