**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 in EUR — comparisons use USD at current FX. As parsed from qotien.fr/pricing on 2026-10-27.
Explore the market
Prices and medians update for the tier you select.
Compare at
Tax Retirement · Pro
$12/mo
Module Expert à la carte plan
Pro-MCP server median
$55.86
across 5 priced MCP servers
vs Pro MCP servers
79% below
below Pro MCP servers
ⓘ Comparisons are same provider type (MCP server) and same buyer tier (Pro). Never across tiers.
Market density
19th pctile
3 competing vendors
Comparable listings · 30d
Flat
limited data · 0 priced comparables
MCP servers · Pro median
$55.86/mo
5 priced · $29.99–$90.06 mid 50%
Price spectrum · Pro plans · 5 of 7 providers priced · log scale · $12 → $79/mo
MCP servers◻ shaded = middle 50% · line = median (all types)large ringed dot = Tax Retirement ($12/mo)
Products in this market
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.