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Viva La Tax is a free, open-source tax filing engine that lets you see exactly how every number on your return was calculated.
Upload your W-2s, 1099s, and K-1s (or enter your info step by step), and the engine computes your federal and state returns with full line-by-line transparency. Download completed IRS forms as fillable PDFs.
- Federal Form 1040 + all major schedules and forms
- 15,000+ automated tests against IRS instructions
- Self-host with Docker

Viva La TaxOpen-source tax engine — file for free, audit every number
Beebsleft a comment
Hey Product Hunt! I'm the maker of Viva La Tax. I started this because I wanted to see the actual formula behind every number on my tax return. I also wanted to see how far we can push an AI harness with a deterministic core. The architecture is spec-driven: every IRS form line is documented in a YAML file with the formula, the IRS instruction reference, and the edge cases. Every spec entry has...

Viva La TaxOpen-source tax engine — file for free, audit every number
Beebsleft a comment
Hello Product Hunt! As builders we want to spend more time building, not moderating. While I was building a community application for racquet sports players (ralley.app) I realized there are too few options to moderate user-generated content. I’ve created OpenModerator, which is a suite of tools to make moderation easy: ✅ Open-source TypeScript package (content-checker) that’s a modernized...

OpenModeratorModern, open-source, AI content moderation
Effortlessly moderate user-generated content with OpenModerator 🛡️ Automate text and image moderation with AI and start using our free, open-source TypeScript package in minutes. More to come: moderation bots, multimedia support, and more powerful AI models

OpenModeratorModern, open-source, AI content moderation

