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© 2026 OpenAccountants. Open Tax Guides, with sources and a clear review status.

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.

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.

1870 Guides · 53 matching · 245 jurisdictions

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Source-cited draft
— researched and cited, not yet reviewed by a licensed practitioner.
By OpenAccountants
written and source-checked by the OpenAccountants team, not yet attested by an accountant.
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
US Sales Tax

United States sales tax, use tax, sales tax nexus, multi-state tax com…

VAT / GSTUnited StatesAttested by another accountant

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1870 Guides across 245 jurisdictions. You do not need to cover an entire country. Publish a Guide within your expertise, under your name, and colleagues attest to the ones they stand behind.

United States

67 Guides · No accountant yet

GLOBAL

60 Guides · No accountant yet

Australia

50 Guides · No accountant yet

Spain

22 Guides · No accountant yet

Canada

35 Guides · Reviewed by: Edgar Lautsyus

US Form 1040 Individual Return

US federal content skill for preparing Form 1040 — the standard indivi…

Income TaxUnited StatesAttested by another accountant
Senegal Payroll Skill v0.1 (Tier 2 — research-verified, pending accountant sign-off)

Senegal payroll processing for employed persons.

PayrollSenegalAttested by another accountant

United Kingdom

29 Guides · Reviewed by: James Power

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