tax-engine

Starter kit open source para automatizar la Declaración de Renta de Personas Naturales en Colombia (Formulario 210 - DIAN): motor de reglas tributarias parametrizable, wizard de captura, carga masiva y panel admin. FastAPI + React + PostgreSQL. Punto de partida para devs y contadores, siempre con validación de un Contador Público.

Deterministic AI-agent tax calculation engine: rules-as-data YAML plugins, zero-knowledge Fraction core, out-of-scope refusal, dual-path self-verification. LLM orchestrates; the engine computes. China 12.5/18 taxes + US/EU/JP samples.

Documento tecnico del nucleo de gestion de ZOE: multi-tenant, ciclo de proyecto, motor tributario colombiano, costos y reparto entre socios

EU & UK VAT Validator & Rate Engine (typescript client)

EU & UK VAT Validator & Rate Engine (python client)

Deterministic personal tax engine — LLM document ingestion in front, pure-code computation in the middle, official-form output at the back. (Greek τέλος: completion, purpose — and the ancient word for tax.)