openaccountants
Tax GuidesFor AccountantsFor DevelopersPartnersDocsPodcastAboutContact
openaccountants

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

Brand kit

Explore

Tax GuidesTax CalendarPartners

Use OpenAccountants

Add to your AIFor AccountantsFor DevelopersDocs

Project

AboutHow It WorksBlogGitHub

Trust

Review MethodSecurityPrivacyTermsContact

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

Add a Guide

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

Loading the map…

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
Romania Einvoice

Whenever asked about e-invoicing in Romania, RO e-Factura, ANAF electr…

E-InvoicingRomaniaSource-cited draft

Showing 1501–1550 of 1727 Guides

PreviousPage 31 of 35Next

Know this subject? Review a Guide.

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

UK Payroll

Whenever asked about UK payroll, PAYE, National Insurance contribution…

PayrollUnited KingdomAccountant-reviewed
IE Prsi Class S

Whenever asked about Irish PRSI Class S contributions for self-employe…

PayrollIrelandSource-cited draft
Venezuela Payroll

Whenever asked about Venezuela payroll processing for employed persons…

PayrollVenezuelaAccountant-reviewed
Netherlands Financial Statements

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

Financial StatementsNetherlandsSource-cited draft
JP Etax Filing

Whenever asked about filing a Japanese tax return electronically via e…

E-InvoicingJapanSource-cited draft
RO Income Tax

Whenever asked about Romanian income tax for self-employed individuals…

Income TaxRomaniaSource-cited draft
Estonia Payroll

Whenever asked about Estonia payroll processing for employed persons. …

PayrollEstoniaSource-cited draft
NY Formation

Tier 2 New York content skill for entity formation covering tax year 2…

Company FormationNew YorkSource-cited draft
Paraguay Payroll Skill v0.1 (Tier 2 — research-verified, reviewer sign-off pending)

Whenever asked about Paraguay payroll processing for employed persons.…

PayrollParaguaySource-cited draft
Spain Transfer Pricing

Whenever asked about Spain transfer pricing rules, documentation requi…

Transfer PricingSpainSource-cited draft
Netherlands Transfer Pricing

Whenever asked about Netherlands transfer pricing rules, documentation…

Transfer PricingNetherlandsSource-cited draft
Netherlands Bookkeeping

Whenever asked about Dutch bookkeeping, chart of accounts, financial s…

BookkeepingNetherlandsSource-cited draft
AB Corporate Tax

For Alberta provincial corporate income tax. Triggers "Alberta CIT", "…

Income TaxCanadaSource-cited draft
Singapore Tax Optimization

When advising on LEGAL tax minimization strategies for Singapore taxpa…

Tax OptimizationSingaporeSource-cited draft
Rwanda VAT

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

VAT / GSTRwandaSource-cited draft
PH Income Tax

Whenever asked about Philippines income tax for self-employed individu…

Income TaxPhilippinesAccountant-reviewed
Belarus Tax Optimization

Whenever asked about reducing tax in Belarus, tax planning, or legal s…

Tax OptimizationBelarusSource-cited draft
IT Impatriati

Italy impatriati tax regime: 50% income exclusion for qualifying inbou…

—ItalySource-cited draft
UK Transfer Pricing

Whenever asked about UK transfer pricing rules, documentation, or HMRC…

Transfer PricingUnited KingdomAccountant-reviewed
UK Tax Optimization

Whenever asked about reducing tax in the UK, tax planning, saving tax,…

Tax OptimizationUnited KingdomAccountant-reviewed
Iceland Income Tax -- Self-Employed and Individuals

Whenever asked about Iceland (Ísland) personal income tax for self-emp…

Income TaxIcelandSource-cited draft
MI Homestead Credit

Whenever asked about the Michigan Homestead Property Tax Credit for fu…

—MichiganSource-cited draft
OH Payroll

Tier 2 Ohio content skill for employer payroll compliance covering tax…

PayrollOhioSource-cited draft
OR Payroll

Tier 2 Oregon content skill for employer payroll compliance covering t…

PayrollOregonSource-cited draft
Singapore Formation

Whenever asked about forming, incorporating, or registering a company …

Company FormationSingaporeSource-cited draft
Sweden Bookkeeping

Whenever asked about Swedish bookkeeping, chart of accounts, BAS konto…

BookkeepingSwedenSource-cited draft
MX Income Tax

Whenever asked about Mexican individual income tax (ISR) for self-empl…

Income TaxMexicoSource-cited draft
NZ Provisional Tax

Whenever asked about New Zealand provisional tax for individuals, comp…

Income TaxNew ZealandSource-cited draft
US State Payroll Matrix

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

PayrollUS FederalSource-cited draft
ES Rental Income

Whenever asked about Spanish rental income taxation. Trigger on phrase…

Income TaxSpainSource-cited draft
UK Student Loan Repayment

Whenever asked about UK Student Loan repayment for self-employed indiv…

Income TaxUnited KingdomAccountant-reviewed
Latvia Tax Optimization

Whenever asked about reducing tax in Latvia, tax planning, or legal st…

Tax OptimizationLatviaSource-cited draft
AE Corporate Tax

Whenever asked about UAE Corporate Tax for freelancers, sole establish…

Income TaxUnited Arab EmiratesAccountant-reviewed
Slovenia VAT Return

Whenever asked to prepare, review, or create a Slovenian VAT return (D…

VAT / GSTSloveniaSource-cited draft
Spain Formation

Whenever asked about forming, incorporating, or registering a company …

Company FormationSpainSource-cited draft
Spain Financial Statements

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

Financial StatementsSpainSource-cited draft
Spain Tax Optimization

Whenever asked about reducing tax in Spain, tax planning, saving tax, …

Tax OptimizationSpainSource-cited draft
AK Sales Tax

Whenever asked about Alaska sales and use tax. Alaska has no statewide…

VAT / GSTAlaskaSource-cited draft
MI Detroit Individual Return

Whenever asked about Detroit (Michigan) city individual income tax for…

Income TaxMichiganSource-cited draft
EU OSS Digital

Whenever a business sells digital services (electronically supplied se…

VAT / GSTGLOBALSource-cited draft
VA Income Tax

Whenever asked about Virginia individual income tax, Virginia Form 760…

Income TaxVirginiaSource-cited draft
TW Nhi

Whenever asked about Taiwan National Health Insurance (NHI) contributi…

PayrollTaiwanSource-cited draft
TX Formation

Tier 2 Texas content skill for entity formation covering tax year 2025…

Company FormationTexasSource-cited draft
Italy Transfer Pricing

Whenever asked about Italy transfer pricing rules, documentation requi…

Transfer PricingItalySource-cited draft
IE Usc

Whenever asked about Ireland's Universal Social Charge (USC) for self-…

PayrollIrelandSource-cited draft
CA Freelance Intake

When a user asks for help preparing their Canadian tax returns AND men…

Income TaxCanadaSource-cited draft
DE Gross Receipts Tax

Delaware Gross Receipts Tax for sole proprietors and self-employed ind…

Income TaxDelawareSource-cited draft
MI Estimated Tax

Whenever asked about Michigan quarterly estimated income tax for indiv…

Income TaxMichiganSource-cited draft
CL VAT Return

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

VAT / GSTChileSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner