Monu Tools

French Income Tax Calculator (2026)

Estimate French income tax on 2025 income using the official 2026 barème, with the quotient familial (parts), plafonnement and décote.

How to use the French Income Tax

  1. 01

    Enter your net taxable household income for the year (after deductions).

  2. 02

    Choose single or couple, and the number of dependent children.

  3. 03

    See the gross tax, décote, income tax due, and your average and marginal rates.

Frequently asked questions

What income do I enter?

Your net taxable income (revenu net imposable): household income after the standard deductions and allowances. This tool applies the barème to that figure; it does not work out the deductions for you.

What is the quotient familial?

France divides taxable income by a number of parts (1 for a single person, 2 for a couple, plus 0.5 per child for the first two and 1 from the third), applies the barème, then multiplies back. It lowers tax for larger households, within a per-half-part cap (plafonnement).

What is the décote?

A reduction that lowers or cancels the tax for low gross-tax amounts. It phases out as income rises, so it only affects modest incomes.

Is this the exact tax I will pay?

It is a close estimate of the barème calculation. It does not include every crédit or réduction d'impôt, so your final notice can differ. It is not tax advice.

About this tool

This calculator applies France's official 2026 income-tax barème to your 2025 net taxable income, using the quotient familial (parts), its plafonnement, and the décote for modest incomes.

It is an estimate to help you understand your bracket and roughly how much tax is due. It does not replace the official simulator or account for every credit, so it is not tax advice.

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