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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 · 1548 matching · 241 jurisdictions

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— reviewed as general reference material by a named licensed practitioner.
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CA 540 Individual Return

Tier 2 content skill for preparing California Form 540 (Resident Incom…

Income TaxCaliforniaSource-cited draft

Showing 1451–1500 of 1548 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

BC Individual Return

Whenever asked about British Columbia provincial income tax for a self…

Income TaxCanadaSource-cited draft
PK Return Assembly

Whenever asked to assemble, finalize, or package a Pakistani annual ta…

Income TaxPakistanSource-cited draft
Ecuador Tax Optimization

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

Tax OptimizationEcuadorSource-cited draft
EG Social Insurance

Whenever asked about Egypt social insurance contributions for an emplo…

PayrollEgyptSource-cited draft
Moldova Tax Optimization

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

Tax OptimizationMoldovaSource-cited draft
Ifrs16 Leases

IFRS lease accounting under IFRS 16 (Leases). Covers the lessee single…

—GLOBALSource-cited draft
DE Franchise Tax And LLC—DelawareSource-cited draft
MN Income Tax

Whenever asked about Minnesota individual income tax for self-employed…

Income TaxMinnesotaSource-cited draft
ES Autonomous Worker

Whenever asked about Spanish self-employed (autónomo) tax and social s…

Income TaxSpainSource-cited draft
Slovenia Payroll

Whenever asked about Slovenia payroll processing for employed persons.…

PayrollSloveniaSource-cited draft
ND Income Tax

Whenever asked about North Dakota individual income tax for self-emplo…

Income TaxNorth DakotaSource-cited draft
UK Return Assembly

Final orchestrator skill that assembles the complete UK filing package…

Income TaxUnited KingdomSource-cited draft
EG Return Assembly

As the final orchestrator that assembles the complete Egyptian filing …

Income TaxEgyptSource-cited draft
US PTE State Matrix

Tier 2 US federal-level reference skill providing the comprehensive st…

—US FederalSource-cited draft
MA Income Tax

Whenever asked about Massachusetts individual income tax. Trigger on p…

Income TaxMassachusettsSource-cited draft
MA Payroll

Tier 2 Massachusetts content skill for employer payroll compliance cov…

PayrollMassachusettsSource-cited draft
Pakistan Sales Tax

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

VAT / GSTPakistanSource-cited draft
Chile Tax Overview

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

Income TaxChileSource-cited draft
IL Freelancer Ops

When advising Israeli freelancers (עצמאים) on business operations, tax…

Income TaxIsraelSource-cited draft
Free Zones Sez Matrix

Whenever a company asks about establishing or trading through a free z…

Cross-BorderGLOBALSource-cited draft
IE Preliminary Tax

Whenever asked about Irish Preliminary Tax for self-employed individua…

Income TaxIrelandSource-cited draft
Japan Financial Statements

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

Financial StatementsJapanSource-cited draft
IE Non Dom

For any question about Ireland's non-dom tax rules. Trigger on: "Irela…

—IrelandSource-cited draft
Ethiopia Payroll Skill v0.1 (Tier 2 -- Research-Verified)

Whenever asked about Ethiopia payroll processing for employed persons.…

PayrollEthiopiaSource-cited draft
Global Marketplaces Banking Fees

Pattern library for online marketplaces (Etsy, eBay, Amazon Seller, Al…

—GLOBALSource-cited draft
Global SAAS Vendors

Deterministic lookup table of 100+ common SaaS/tech vendors that appea…

—GLOBALSource-cited draft
FR Cfe

Whenever asked about the French Cotisation Foncière des Entreprises (C…

Income TaxFranceSource-cited draft
Azerbaijan Tax Optimization

Whenever asked about reducing tax in Azerbaijan, tax planning, or lega…

Tax OptimizationAzerbaijanSource-cited draft
ME Income Tax

Whenever asked about Maine individual income tax for self-employed per…

Income TaxMaineSource-cited draft
Netherlands Crypto Tax

Whenever asked about Netherlands cryptocurrency or digital asset taxat…

Crypto TaxNetherlandsSource-cited draft
NL Payroll Tax

Whenever asked about Dutch payroll taxes (loonheffingen) or the work c…

PayrollNetherlandsSource-cited draft
Moldova (Republic of Moldova) Income Tax -- Self-Employed and Individuals

Whenever asked about Moldova (Republic of Moldova) personal income tax…

Income TaxMoldovaSource-cited draft
MX Estimated Tax

Whenever asked about Mexican provisional income tax payments (pagos pr…

Income TaxMexicoSource-cited draft
PA Sales Tax

Whenever asked about Pennsylvania sales and use tax, PA DOR filings, P…

VAT / GSTPennsylvaniaSource-cited draft
US Nonresident Cgt

US capital gains tax for non-resident aliens: FIRPTA withholding on US…

—US FederalSource-cited draft
AU Tax Residency

For any question about Australian tax residency. Trigger on: "am I an …

Cross-BorderAustraliaSource-cited draft
US Capital Gains

US federal capital gains tax for residents: short-term vs long-term ra…

Income TaxUS FederalSource-cited draft
Albania Personal Income Tax -- Self-Employed & Individuals

Whenever asked about Albania personal income tax for self-employed ind…

Income TaxAlbaniaSource-cited draft
Mauritania Personal Income Tax

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

Income TaxMauritaniaSource-cited draft
North Macedonia Compulsory Social Contributions & Payroll

Whenever asked about North Macedonia (Republic of North Macedonia, MK)…

PayrollNorth MacedoniaSource-cited draft
MT Capital Gains

For any question about capital gains tax in Malta. Trigger on: "CGT Ma…

Income TaxMaltaSource-cited draft
Kenya Company Formation & Entity Choice

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

Company FormationKenyaSource-cited draft
Costa Rica Payroll Skill v0.1 (Tier 2 — research-verified, pending accountant sign-off)

Whenever asked about Costa Rica payroll processing for employed person…

PayrollCosta RicaSource-cited draft
Croatia Payroll

Whenever asked about Croatia payroll processing for employed persons. …

PayrollCroatiaSource-cited draft
Bhutan Tax Overview

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

Income TaxBhutanSource-cited draft
Seychelles Corporate Income Tax

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

Income TaxSeychellesSource-cited draft
Bosnia and Herzegovina Payroll

Whenever asked about Bosnia and Herzegovina payroll processing for emp…

PayrollBosnia and HerzegovinaSource-cited draft
Bosnia and Herzegovina Income Tax -- Personal/Self-Employed

Whenever asked about Bosnia and Herzegovina personal income tax (porez…

Income TaxBosnia and HerzegovinaSource-cited draft
Bulgaria Payroll

Whenever asked about Bulgaria payroll processing for employed persons.…

PayrollBulgariaSource-cited draft

Dominican Republic

22 Guides · Partner: Miguel Lantigua

Guides awaiting reviewBecome a Partner