calculate_french_income_tax
Calculate French income tax (IR) for 2026 using progressive brackets and family quotient. Input your annual net taxable income and fiscal shares to get total tax, effective and marginal rates, and bracket details.
Instructions
Calculate French income tax (IR) for 2026 using progressive brackets per Article 197 CGI with family quotient system. Returns: {income, family_quotient, total_tax, effective_rate_pct, marginal_rate_pct, brackets}. See list_bundles for related 'finance-france' calculators.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| income | Yes | Annual net taxable income in euros | |
| parts | No | Number of fiscal shares (1=single, 2=married, +0.5 per child) |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | No | Computed result. Object whose fields depend on the tool (e.g. {tax, marginal_rate, brackets} for tax tools, {volume_l, gallons} for volume tools). | |
| formula | No | Human-readable formula or method used (e.g. "I=P·r·t", "Magnus formula"). | |
| source | No | Authoritative source for the rule or formula (e.g. "Article 197 CGI", "NF DTU 21"). | |
| reference_url | No | Link to a calcul2 page documenting the calculation in detail. |