Global / Multi-country
The multi-country layer is where open-source tax is strongest: rules-as-code frameworks like OpenFisca and Catala model legislation as executable logic, GOBL normalizes invoices and tax documents into one schema, and benchmark suites measure how well AI models actually do tax. These are the foundations national projects build on.
A maintained, openly licensed dataset of worldwide VAT/GST rates and thresholds — every commercial provider treats this as the product, so the open ecosystem keeps re-scraping it.
8 projects tagged Global / Multi-country, ranked by community stars.
Self-hosted AI accounting app. LLM analyzer for receipts, invoices, transactions with custom prompts and categories
A portfolio tracking, analytics, accounting and management application that protects your privacy
Programming language for literate programming law specification
Open-source Tax Guides for AI agents, reviewed by named CPAs/CAs/EAs. 1,000+ Guides across 190+ jurisdictions. MCP server included. Works with Claude, ChatGPT, Cursor.
OpenFisca core engine. See other repositories for countries-specific code & data.
An overlapping generations model framework for evaluating fiscal policies.