Here's the problem: a freelance developer's tax return costs $500-2,000 with a traditional accountant. But 80% of that cost is prep work, classifying transactions, looking up rates, filling in forms. Work that AI can now do, if it has the right rules. That's what we built. 259 open-source tax computation skills across 171 jurisdictions. Markdown files that any AI agent can read — Claude, Cursor, Codex, whatever you use. Clone the repo, upload your bank statements, and the skills classify every transaction through a deterministic cascade: supplier patterns, statutory rules, conservative defaults. Every position cited to statute. Every assumption disclosed. The key insight: the output isn't addressed to you. It's addressed to a licensed reviewer. Every position, every citation, every assumption laid out in a structured review checklist. The accountant isn't building your return from scratch — they're confirming what the AI already prepared. That's how a $1,500 engagement becomes a $200 review. The skills are free forever. MIT licensed. One git clone. The only thing you pay for is the professional second opinion at the end if you want.

Open Accountants

The tax computation chain your LLM needs, verified by CPAs

The tax computation chain your LLM needs, verified by CPAs