**Qotien** — sourced, dated calculation API for French personal **tax** and **retirement**, over MCP. The engine never guesses: every result carries a confidence level, its legal sources (CGI / BOFiP) and the fiscal year. **Fiscal** (deterministic): income tax (2026 barème, quot
Prices and medians update for the tier you select.
Ranked by how closely each one matches Tax Retirement's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.