tax

💰 Billing & Payments knowledge for cloud platforms

Crypto-currency tax calculator with support for all popular wallets, exchanges, explorers and migration from other crypto tax platforms

Free AI skills (tax rules your AI follows) for 190+ countries, with sources and review status. Written by AI-first accountants in many countries. Need cross-border work done? Hire us.

Privacy-focused, free, open-source cryptocurrency tax calculator for multiple countries: it handles multiple coins/exchanges and computes long/short-term capital gains, cost bases, in/out lot relationships/fractioning, and account balances. It supports FIFO, LIFO, HIFO and it outputs in form 8949 format. It has a programmable plugin architecture

Factura Electrónica AFIP y otros servicios web (proyecto software libre) — Interfases, tools and apps for Argentina's gov't. webservices (soap, com/dll simil-ocx, pdf, dbf, xml, json, etc.) #python

💰 International sales tax calculator for Node (offline, but provides optional online VAT number fraud check). Tax rates are kept up-to-date.

Servidor MCP fiscal brasileiro: CNPJ, NF-e, NFS-e, CT-e, SPED, eSocial, Simples Nacional, Reforma 2026. 44 tools, zero-cadastro, tabelas offline. Python.

A tax calculator for stocks and dividends activities.

GitHub Sponsorsの確定申告手順

The PolicyEngine US Python package contains a rules engine of the US tax-benefit system, and microdata generation for microsimulation analysis.

Calculate your taxes from cryptocurrency gains

Fully open-source US federal tax engine. Single binary cli. Runs on macOS, Linux, and Windows. Built for AI agents using AI agents.

ERPNext application for Switzerland-specific use cases

💸 {Digital,Cloud,Electronic,Online} Services VAT Rate Database

💰 A simple and clean PHP library that validates EU VAT registration numbers against the central ec.europa.eu database (using the official europa API) 🇪🇺

CA property tax visualization

An implementation of Saudi Arabia ZATCA's E-Invoicing requirements, processes, and standards in TypeScript.

Go SDK for integration with the Integrated Tax Administration System (SIAT).

한국 스타트업, 1인 법인, 프리랜서, 개인 사업자를 위한 장부 자동 생성 Claude Code 스킬. 카드명세서 PDF·은행 CSV → 재무제표·세무사 전달 CSV 자동 생성. Level 2 민감정보 마스킹 적용.

Official XSD from the Government of Angola for use in SAF-T AO