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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.

© 2026 OpenAccountants. Open tax rules, reviewed by accountants.

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.

1752 Guides · 241 jurisdictions

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— researched and cited, not yet reviewed by a licensed practitioner.
Accountant-reviewed
— reviewed as general reference material by a named licensed practitioner.
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— flagged for review.
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— do not use for current work.
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ND Sales Tax

Whenever asked about North Dakota sales and use tax. Trigger on phrase…

VAT / GSTNorth DakotaSource-cited draft

Showing 1301–1350 of 1727 Guides

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1752 Guides across 241 jurisdictions. You do not need to review an entire country — choose a Guide within your expertise and get credited as an Open Accountants Partner on the ones you review.

GLOBAL

61 Guides · Awaiting review

US Federal

58 Guides · Awaiting review

Spain

22 Guides · Awaiting review

Australia

20 Guides · Awaiting review

Canada

35 Guides · Partner: Edgar Lautsyus

ZA Income Tax

Whenever asked about South African income tax for self-employed indivi…

Income TaxSouth AfricaAccountant-reviewed
Ecuador Tax Overview

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

Income TaxEcuadorSource-cited draft
WA Bo TaxIncome TaxWashingtonSource-cited draft
PA Income Tax

Triggers when the taxpayer is a Pennsylvania resident sole proprietor …

Income TaxPennsylvaniaSource-cited draft
Tunisia Tax Overview

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

Income TaxTunisiaSource-cited draft
NL Zzp Deductions

Whenever asked about Dutch self-employed (zzp) tax deductions. Trigger…

Income TaxNetherlandsSource-cited draft
Philippines Tax Overview

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

Income TaxPhilippinesAccountant-reviewed
NJ Sales Tax

Whenever asked about New Jersey sales and use tax. Trigger on phrases …

VAT / GSTNew JerseySource-cited draft
VA Corporate Tax And Bpol—VirginiaSource-cited draft
ME Sales Tax

Whenever asked about Maine sales and use tax. Trigger on phrases like …

VAT / GSTMaineSource-cited draft
Oman Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Oman (tax year …

PayrollOmanSource-cited draft
SG Zero Cgt

When asked about capital gains in Singapore. Trigger on: "CGT Singapor…

—SingaporeSource-cited draft
Tunisia Personal Income Tax

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

Income TaxTunisiaSource-cited draft
OR Income Tax

Triggers when the taxpayer is an Oregon resident sole proprietor or si…

Income TaxOregonSource-cited draft
Tunisia Company Formation & Entity Choice

Source-cited draft: company formation & entity choice for Tunisia (tax…

Company FormationTunisiaSource-cited draft
RI Sales Tax

Whenever asked about Rhode Island sales tax, RI use tax, Rhode Island …

VAT / GSTRhode IslandSource-cited draft
Iceland Payroll

Whenever asked about Iceland payroll processing for employed persons. …

PayrollIcelandSource-cited draft
UK Financial Statements

When preparing, reviewing, or advising on annual financial statements …

Financial StatementsUnited KingdomAccountant-reviewed
Tunisia VAT

Whenever asked to prepare, review, or classify transactions for a Tuni…

VAT / GSTTunisiaSource-cited draft
CH Ahv Iv

Whenever asked about Swiss AHV/IV (Alters- und Hinterlassenenversicher…

PayrollSwitzerlandSource-cited draft
Turkey VAT

Whenever asked to prepare, review, or classify transactions for a Turk…

VAT / GSTTurkeySource-cited draft
Tanzania VAT

Whenever asked to prepare, review, or classify transactions for a Tanz…

VAT / GSTTanzaniaAccountant-reviewed
CH VAT Return

Redirect — consolidated into switzerland-vat.md in this directory.

VAT / GSTSwitzerlandSource-cited draft
US GILTI FDII BEAT

Tier 2 US federal international tax content skill for §951A GILTI / po…

Cross-BorderUS FederalSource-cited draft
TN Sales TaxVAT / GSTTennesseeSource-cited draft
AE VAT Return

This skill has been consolidated. See uae-vat.md in this directory.

VAT / GSTUnited Arab EmiratesAccountant-reviewed
Tunisia Corporate Income Tax

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

Income TaxTunisiaSource-cited draft
Mongolia VAT

Whenever asked to prepare, review, or classify transactions for a Mong…

VAT / GSTMongoliaSource-cited draft
Tunisia Payroll & Social Contributions

Source-cited draft: payroll & social contributions for Tunisia (tax ye…

PayrollTunisiaSource-cited draft
SAAS Digital Products

Whenever a SaaS company, digital platform, app developer, marketplace,…

—GLOBALSource-cited draft
SD Sales Tax

Whenever asked about South Dakota sales tax, South Dakota use tax, Sou…

VAT / GSTSouth DakotaSource-cited draft
US Multi State Residency And Allocation

Tier 2 US federal-level content skill for multi-state residency, domic…

Cross-BorderUS FederalSource-cited draft
Portugal Bookkeeping

Utilize esta skill sempre que lhe forem colocadas questões sobre conta…

BookkeepingPortugalSource-cited draft
Ethiopia Corporate Income Tax

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

Income TaxEthiopiaSource-cited draft
UT Sales Tax

Whenever asked about Utah sales tax, Utah use tax, USTC sales tax fili…

VAT / GSTUtahSource-cited draft
US State Formation Matrix

Tier 2 US federal-level reference skill providing the 50-state at-a-gl…

Company FormationUS FederalSource-cited draft
ID Sales Tax

Whenever asked about Idaho sales and use tax. Trigger on phrases like …

VAT / GSTIdahoSource-cited draft
NL Corporate Tax

Whenever asked about Dutch corporate income tax (vennootschapsbelastin…

Income TaxNetherlandsSource-cited draft
TX Franchise Tax

Texas Franchise Tax for single-member LLCs and other taxable entities.…

Income TaxTexasSource-cited draft
North Macedonia Tax Optimization

Whenever asked about reducing tax in North Macedonia, tax planning, or…

Tax OptimizationNorth MacedoniaSource-cited draft
Uruguay IVA

Whenever asked to prepare, review, or create a Uruguay IVA (Impuesto a…

VAT / GSTUruguaySource-cited draft
Philippines VAT

Whenever asked to prepare, review, or classify transactions for a Phil…

VAT / GSTPhilippinesAccountant-reviewed
Croatia VAT Return

Whenever asked to prepare, review, or classify transactions for a Croa…

VAT / GSTCroatiaSource-cited draft
IE Return Assembly

Whenever asked to assemble, finalize, or package an Irish annual tax r…

Income TaxIrelandSource-cited draft
NV Commerce Tax

Whenever asked about the Nevada Commerce Tax. Trigger on phrases like …

Income TaxNevadaSource-cited draft
Latvia Company Formation & Entity Choice

Source-cited draft: company formation & entity choice for Latvia (tax …

Company FormationLatviaSource-cited draft
Vietnam VAT

Whenever asked to prepare, review, or classify transactions for a Viet…

VAT / GSTVietnamSource-cited draft
Zambia VAT

Whenever asked to prepare, review, or classify transactions for a Zamb…

VAT / GSTZambiaSource-cited draft
UK Major Partners—GLOBALSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner