openaccountants/openaccountants
VerifiedOpen-source tax reference skills for AI agents in 190+ jurisdictions.
What is openaccountants/openaccountants?
OpenAccountants is an open-source collection of tax and accounting reference files designed to extend AI agents with jurisdiction-specific knowledge. It includes over one thousand skills spanning income tax, VAT, payroll, and company formation procedures. A subset of skills carries named verification from credentialed accountants while the remainder remains research-only.
Users connect the package either through an MCP-compatible client for full features including human handoff or by dragging markdown files into any LLM that accepts project knowledge. The system loads relevant country or state folders automatically based on the query and returns structured outputs such as checklists, schedules, and compliance notes.
It serves developers building tax-aware agents, accountants who want to audit or extend the library, and individuals seeking general reference material before consulting a professional. All outputs carry a clear disclaimer that they are not advice and require qualified review before any filing or payment.
Capabilities
What you can build with openaccountants/openaccountants
VAT return preparation
Load Brazil-specific indirect tax files to receive PIS/COFINS/ICMS rules, e-invoice checks, and a step-by-step filing workflow with required documents.
Freelancer tax estimates
Activate South Africa packages to generate an ITR12 working paper, provisional tax schedule, medical credits, and retirement annuity calculations.
Company setup guidance
Use Malta formation and tax files to compare entity types, list registration steps and costs, and produce a post-formation compliance checklist.
Install openaccountants/openaccountants
git clone https://github.com/openaccountants/openaccountants.git
cd openaccountants
pip install ./mcp # requires Python 3.10+- 1Visit openaccountants.com/connect and install the MCP connector for verified skills.
- 2Browse the packages folder to locate your country or state directory.
- 3Add the selected markdown files to your AI project or workspace.
- 4Ask the agent a tax or accounting question and review the loaded references.
- 5Request accountant review through the MCP handoff when needed.
openaccountants/openaccountants: pros & cons
Pros
- +Extensive coverage of 190+ jurisdictions with structured, query-ready files.
- +Optional named accountant verification and direct human handoff via MCP.
- +Fully open-source research base that anyone can audit or fork.
- +Works with Claude, ChatGPT, Cursor, and other MCP-aware tools.
Cons
- –All content is general reference only and explicitly not professional advice.
- –Research-verified skills lack named review and may contain gaps or outdated rules.
- –Requires separate qualified professional sign-off before any filing or payment.
Frequently asked questions
No. It supplies reference material only and states clearly that outputs must be reviewed by a qualified accountant before any action.
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