openaccountants
Tax LibraryMissionFor AccountantsDevelopersFor PlatformsContribute
openaccountants

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

Brand kit

Explore

Tax LibraryWorkflowsTax CalendarMission

Use OpenAccountants

Connect to your AIFor AccountantsContributeDevelopersFor Platforms

Project

AboutHow It WorksMaintainers & ReviewersBlogGitHub

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 knowledge, maintained by the profession.

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.

1752 skills · 74 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
uk-self-employment-sa103

Asked about UK self-employment income for sole traders filing SA103S (…

Income TaxUnited KingdomAccountant-reviewed

Showing 1–50 of 74 skills

Page 1 of 2Next

Know this subject? Review one defined task.

1752 open rules across 242 jurisdictions. You do not need to review an entire country — choose a focused issue within your expertise and receive attribution to the exact accepted change.

GLOBAL

36 rules · Needs review

Australia

14 rules · Needs review

Germany

13 rules · Needs review

Spain

10 rules · Needs review

US Federal

22 rules · Maintained by Amir Pelinkovic

in-return-assembly

Final orchestrator skill that assembles the complete India filing pack…

Income TaxIndiaAccountant-reviewed
in-professional-tax

Asked about Indian professional tax (profession tax). Trigger on phras…

Income TaxIndiaAccountant-reviewed
ca-crypto-tax

Asked about Canadian cryptocurrency taxation. Trigger on phrases like …

Crypto TaxCanadaAccountant-reviewed
sri-lanka-income-tax

Asked about Sri Lanka personal income tax for resident individuals, no…

Income TaxSri LankaAccountant-reviewed
Venezuela Income Tax (ISLR) — Individual

Asked about Venezuela personal income tax (ISLR — Impuesto Sobre la Re…

Income TaxVenezuelaAccountant-reviewed
in-pf-esi-employer

Asked about Indian EPF (Employees' Provident Fund), ESI (Employees' St…

PayrollIndiaAccountant-reviewed
za-vat-return

Asked about South African VAT returns for self-employed individuals or…

VAT / GSTSouth AfricaAccountant-reviewed
brazil-transfer-pricing

EN: Use this skill whenever asked about Brazil transfer pricing rules,…

Transfer PricingBrazilAccountant-reviewed
uk-vat-return

Asked to prepare, review, or classify transactions for a UK VAT return…

VAT / GSTUnited KingdomAccountant-reviewed
portugal-financial-statements

Utilize esta skill na preparação, revisão ou aconselhamento sobre demo…

Financial StatementsPortugalAccountant-reviewed
ng-cit

Asked about Nigerian Companies Income Tax (CIT) for a resident Nigeria…

—NigeriaAccountant-reviewed
india-payroll

Asked about Indian payroll processing, employee salary calculations, T…

PayrollIndiaAccountant-reviewed
Peru Social Security, Health & Payroll Contributions

Asked about Peru payroll contributions, social security, health insura…

PayrollPeruAccountant-reviewed
ca-fed-instalments

Asked about Canadian federal quarterly instalment requirements for sel…

Income TaxCanadaAccountant-reviewed
uk-capital-gains-sa108

Asked about UK capital gains tax for individuals. Trigger on phrases l…

Income TaxUnited KingdomAccountant-reviewed
us-s-corp-election-decision

Tier 2 content skill for evaluating whether a US sole proprietor or si…

Income TaxUS FederalAccountant-reviewed
india-gst

Asked to prepare, review, classify, or advise on India's Goods and Ser…

VAT / GSTIndiaAccountant-reviewed
us-qbi-deduction

Layer-2 content skill for computing the §199A Qualified Business Incom…

Income TaxUS FederalAccountant-reviewed
pk-cgt

Asked about Pakistan Capital Gains Tax. Trigger on phrases like "Pakis…

—PakistanAccountant-reviewed
sri-lanka-sscl

ALWAYS read this skill before touching any Sri Lanka Social Security C…

—Sri LankaAccountant-reviewed
Cyprus Social Insurance & GHS (GESY) Contributions

Asked about Cyprus social insurance and General Healthcare System (GHS…

PayrollCyprusAccountant-reviewed
pk-withholding-tax

ALWAYS read this skill before touching any Pakistan Withholding Tax (W…

Cross-BorderPakistanAccountant-reviewed
uk-student-loan-repayment

Asked about UK Student Loan repayment for self-employed individuals. T…

Income TaxUnited KingdomAccountant-reviewed
Peru Income Tax (Impuesto a la Renta — Rentas de Trabajo)

Asked about Peru income tax (Impuesto a la Renta) for individuals — es…

Income TaxPeruAccountant-reviewed
south-korea-crypto-tax

Asked about South Korea cryptocurrency or virtual asset taxation. Trig…

Crypto TaxSouth KoreaAccountant-reviewed
id-pph-final-umkm

Asked to compute, review, or advise on Indonesia PPh Final UMKM — the …

—IndonesiaAccountant-reviewed
uk-national-insurance

Asked about UK National Insurance Contributions (NIC) for self-employe…

PayrollUnited KingdomAccountant-reviewed
Sri Lanka Capital Gains Tax (CGT)

Sri Lanka Capital Gains Tax on realisation of investment assets — rate…

Income TaxSri LankaAccountant-reviewed
Sri Lanka Provisional Tax / Advance Income Tax (AIT)

Sri Lanka provisional tax via Advance Income Tax (AIT) quarterly insta…

Income TaxSri LankaAccountant-reviewed
Sri Lanka Stamp Duty

Sri Lanka stamp duty — central-government instruments and provincial i…

Estate & Wealth TaxSri LankaAccountant-reviewed
nepal-vat

Asked to prepare, review, or classify transactions for a Nepal VAT ret…

VAT / GSTNepalAccountant-reviewed
Sri Lanka Betting, Gaming Levy & Excise

Sri Lanka betting & gaming levy, excise duty and customs import duties…

Sector GuidanceSri LankaAccountant-reviewed
id-payroll-pph21

Asked to calculate, review, or advise on Indonesian payroll — PPh 21 (…

PayrollIndonesiaAccountant-reviewed
fl-annual-report

Florida Annual Report filing for LLCs and corporations registered with…

Company FormationFloridaAccountant-reviewed
id-bookkeeping

Asked about Indonesian bookkeeping or transaction classification for i…

BookkeepingIndonesiaAccountant-reviewed
bahrain-vat

Asked to prepare, review, or classify transactions for a Bahrain VAT r…

VAT / GSTBahrainAccountant-reviewed
ca-fed-t1-return

Asked about a Canadian federal T1 General individual income tax return…

Income TaxCanadaAccountant-reviewed
us-schedule-c-and-se-computation

Tier 2 content skill for computing Schedule C bottom line, Form 8829 h…

Income TaxUS FederalAccountant-reviewed
ng-vat-return

Asked about Nigerian VAT returns for self-employed individuals or smal…

VAT / GSTNigeriaAccountant-reviewed
portugal-einvoice

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

E-InvoicingPortugalAccountant-reviewed
sa-rett

Asked about the Saudi Arabian Real Estate Transaction Tax (RETT). Trig…

—Saudi ArabiaAccountant-reviewed
Venezuela Social Security & Payroll Contributions

Asked about Venezuela social security and payroll contributions (IVSS,…

PayrollVenezuelaAccountant-reviewed
in-tds-freelance

Asked about Indian TDS (Tax Deducted at Source) on payments to freelan…

Income TaxIndiaAccountant-reviewed
ng-wht

Asked to compute, classify, or review Nigerian Withholding Tax (WHT) o…

—NigeriaAccountant-reviewed
ca-fed-t2125

Asked about Canadian self-employment business income reported on Form …

Income TaxCanadaAccountant-reviewed
us-sole-prop-bookkeeping

Tier 2 content skill for classifying business transactions into US fed…

BookkeepingUS FederalAccountant-reviewed
pk-corporate-tax

ALWAYS read this skill before touching any Pakistan corporate income t…

Income TaxPakistanAccountant-reviewed
fl-sales-use-tax

Florida Sales and Use Tax return (Form DR-15) for self-employed indivi…

Income TaxFloridaAccountant-reviewed
il-sales-tax

Illinois Sales Tax return (Form ST-1) for self-employed individuals. C…

VAT / GSTIllinoisAccountant-reviewed

Canada

15 rules · Maintained by Edgar Lautsyus

Browse open review tasksHow maintainership works