Open Source Tax Software.
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Fully open-source US federal tax engine. Single binary cli. Runs on macOS, Linux, and Windows. Built for AI agents using AI agents.
Rust bindings and SDK for the ELSTER Rich Client (ERiC)
Runloop's AI TaxMan Project: an agent development starter that uses Codex & W&B Weave to process tax forms. Watch YouTube series: https://youtu.be/an7OMH_i8DU
TaxEase.AI is a user-friendly AI assistant designed to demystify and simplify US tax filing, a system that has become needlessly convoluted and stressful for millions of Americans.
MCP server for French tax calculations and information - enables AI assistants to provide accurate French tax guidance
MCP server for US individual taxpayers — 39 tools for federal/state tax calculations, credits, deductions, retirement strategies, and tax planning. All calculations run locally. TY2024 + TY2025 (OBBB Act).
Claude Code/Codex agent skills for preparing Dutch income tax and voorlopige aanslag workpacks.
Beancount plugin for generating informational UK tax report (calculate capital gains tax)
Local-first MCP server for Indian income tax: deterministic tax computation, regime comparison, advance tax planning, document parsing -- all on your machine
Model Context Protocol (MCP) server for ELSTER (German tax portal). Submit UStVA, prepare EUER/ESt, sync inbox + history via Puppeteer.
MCP server for AI-assisted tax filing through FreeTaxUSA using Playwright browser automation
Free equity-compensation tax optimizer for AI agents — ISO/AMT, NSO, RSU sell-vs-hold, QSBS, concentration & hedging. Deterministic math, federal + 50 states + DC, multi-year plans. Remote MCP + REST, no signup.
Simplify Tax is an AI-powered tax filing and optimization tool designed to assist Indian taxpayers in understanding their tax obligations, maximizing deductions, and selecting the most beneficial regime. It reads bank statements, classifies income, calculates tax liabilities, and recommends the optimal tax-saving strategy — all automatically.
Retrieval Augmented Generation (RAG) dataset for Brazilian Federal Revenue Service (Receita Federal do Brasil ― RFB).
Comprehensive MCP server for Skatteetaten (Norwegian Tax Administration) — covers all tax APIs via Maskinporten auth
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