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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 · 300 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
Pennsylvania Sales Tax

Use this skill whenever asked about Pennsylvania sales and use tax, PA…

VAT / GSTPennsylvaniaSource-cited draft

Showing 251–300 of 300 skills

PreviousPage 6 of 6

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

egypt-vat

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

VAT / GSTEgyptSource-cited draft
ukraine-vat

Use this skill whenever asked to prepare, review, or advise on a Ukrai…

VAT / GSTUkraineSource-cited draft
ne-sales-tax

Use this skill whenever asked about Nebraska sales and use tax. Trigge…

VAT / GSTNebraskaSource-cited draft
new-jersey-sales-tax

Use this skill whenever asked about New Jersey sales and use tax. Trig…

VAT / GSTNew JerseySource-cited draft
nigeria-vat

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

VAT / GSTNigeriaSource-cited draft
indiana-sales-tax

Use this skill whenever asked about Indiana sales and use tax. Trigger…

VAT / GSTIndianaSource-cited draft
maine-sales-tax

Use this skill whenever asked about Maine sales and use tax. Trigger o…

VAT / GSTMassachusettsSource-cited draft
mississippi-sales-tax

Use this skill whenever asked about Mississippi sales and use tax. Tri…

VAT / GSTMississippiSource-cited draft
wisconsin-sales-tax

Use this skill whenever asked about Wisconsin sales tax, Wisconsin use…

VAT / GSTWisconsinSource-cited draft
austria-vat-return

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

VAT / GSTAustriaSource-cited draft
dc-sales-tax

Use this skill whenever asked about District of Columbia sales tax, DC…

VAT / GSTDistrict of ColumbiaSource-cited draft
iran-vat

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

VAT / GSTIranSource-cited draft
latvia-vat-return

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

VAT / GSTLatviaSource-cited draft
sri-lanka-vat

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

VAT / GSTSri LankaAccountant-verified
Bulgaria VAT (ДДС) Return

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

VAT / GSTBulgariaSource-cited draft
es-vat-return

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

VAT / GSTSpainSource-cited draft
canada-gst-hst

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

VAT / GSTCanadaSource-cited draft
us-sales-tax

Use this skill whenever asked about United States sales tax, use tax, …

VAT / GSTUS FederalAccountant-verified
Dominican Republic Selective Consumption Tax (ISC)

Dominican Republic Selective Consumption Tax (ISC) — accountant-verifi…

VAT / GSTDominican RepublicAccountant-verified
belgium-vat-return

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

VAT / GSTBelgiumSource-cited draft
ghana-vat

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

VAT / GSTGhanaSource-cited draft
thailand-vat

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

VAT / GSTThailandSource-cited draft
ecuador-iva

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

VAT / GSTEcuadorSource-cited draft
ng-vat

Use this skill whenever asked to prepare, review, classify transaction…

VAT / GSTNigeria32/36 facts verified
iceland-vat

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

VAT / GSTIcelandSource-cited draft
liechtenstein-vat

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

VAT / GSTLiechtensteinSource-cited draft
mx-vat-return

Mexican VAT return (IVA -- Impuesto al Valor Agregado, Declaracion Men…

VAT / GSTMexicoSource-cited draft
slovakia-vat-return

Use this skill whenever asked to prepare, review, or create a Slovak V…

VAT / GSTSlovakiaSource-cited draft
norway-mva

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

VAT / GSTNorwaySource-cited draft
rwanda-vat

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

VAT / GSTRwandaSource-cited draft
slovenia-vat-return

Use this skill whenever asked to prepare, review, or create a Slovenia…

VAT / GSTSloveniaSource-cited draft
portugal-vat-return

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

VAT / GSTPortugalAccountant-verified
saudi-arabia-vat

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

VAT / GSTSaudi ArabiaAccountant-verified
sweden-vat-return

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

VAT / GSTSwedenSource-cited draft
ak-sales-tax

Use this skill whenever asked about Alaska sales and use tax. Alaska h…

VAT / GSTAlaskaSource-cited draft
cl-vat-return

Chilean VAT return (IVA -- Impuesto al Valor Agregado, Formulario 29) …

VAT / GSTChileSource-cited draft
us-sales-tax-nexus-50-state-matrix

Tier 2 US federal-level reference skill providing the post-Wayfair eco…

VAT / GSTUS FederalSource-cited draft
uae-vat

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

VAT / GSTUnited Arab EmiratesAccountant-verified
uzbekistan-vat

Use this skill whenever asked to prepare, review, or create an Uzbekis…

VAT / GSTUzbekistanSource-cited draft
hi-sales-tax

Use this skill whenever asked about Hawaii General Excise Tax (GET). T…

VAT / GSTHawaiiSource-cited draft
qc-qst-return

Use this skill whenever asked about Quebec Sales Tax (QST / TVQ) retur…

VAT / GSTCanadaSource-cited draft
vt-sales-tax

Use this skill whenever asked about Vermont sales tax, Vermont use tax…

VAT / GSTVermontSource-cited draft
pk-sales-tax-federal

ALWAYS read this skill before touching any Pakistan FEDERAL sales tax …

VAT / GSTPakistanAccountant-verified
pk-sales-tax-servicesVAT / GSTPakistanAccountant-verified
pakistan-sales-tax

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

VAT / GSTPakistanSource-cited draft
greece-vat-return

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

VAT / GSTGreeceSource-cited draft
German UStVA (VAT Return)

Prepares the Umsatzsteuervoranmeldung including Vorsteuer deductions, …

VAT / GSTGermanySource-cited draft
malta-vat-return

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

VAT / GSTMaltaSource-cited draft
EU VAT Directive

Tier 2 EU regional layer containing Council Directive 2006/112/EC cont…

VAT / GSTEU (general)Source-cited draft

Canada

16 skills · Lead: Edgar Lautsyus · 11 verified

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