French Income Tax Simulator 2026
Calculate your income tax with progressive brackets, family quotient, and see your marginal rate.
The progressive income tax brackets
French income tax is calculated using 5 progressive brackets. Each bracket only applies to the portion of income within that range, which means the marginal rate is not the average rate.
Family quotient: how does it work?
The family quotient divides taxable income by the number of household shares. A single person has 1 share, a married couple has 2 shares. Each dependent child adds 0.5 shares (1 share from the 3rd child onward). Single parents receive an additional half share.
Marginal rate vs effective rate: what's the difference?
The marginal tax rate (TMI) is the rate of the highest bracket your income reaches. The effective rate is the total tax divided by taxable income. Knowing your TMI is essential for optimizing investments (PER, life insurance) and anticipating the tax impact of additional income.
Frequently asked questions about income tax
How do progressive brackets work?▼
What is the family quotient?▼
What's the difference between marginal and effective rate?▼
Does withholding at source change the tax amount?▼
How to optimize income tax?▼
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