How accurate is a free income-tax estimate?

AdminLanding's estimator is indicative: it models the progressive barème, the automatic 10% salary deduction (floor €509 / ceiling €14,555, 2025 income), the quotient familial with its cap, and the décote. It does not model PFU capital income, tax reductions and credits, the CEHR, or special half-parts. The authoritative figure is the DGFiP's own simulator on impots.gouv.fr, which the page links.

Income tax 2026: estimate your amount in 30 seconds

Last updated 19 July 2026AdminLanding Editorial

The published barème applied to your 2025 income: 10% salary deduction, quotient familial with its cap, décote. An indicative estimate, free and without an account — with the official DGFiP simulator always one click away.

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Income tax estimator — free

Indicative estimate — 2026 declaration, 2025 income. The official impots.gouv.fr simulator is the authoritative calculation.

Situation

Net taxable salary 2025

The cumulative "net imposable" on the December payslip, before the automatic 10% deduction (applied here for you).

Dependent children

Other taxable income (entered net)

Estimated income tax:—

Enter your 2025 income above to see the estimate.

Indicative estimate only — for the authoritative figure use the official impots.gouv.fr simulator .

What this estimate does not include

Investment income (interest, dividends, capital gains) is normally taxed separately at the 30% flat tax (PFU) and is not modeled here. Only enter it in "other income" if it is taxed at the barème. Official source
Tax reductions and credits (donations, home employment, childcare...) are not modeled. They can significantly lower the final amount — the official simulator handles them. Official source
The amount withheld at source (prélèvement à la source) during the year is an advance, not the final tax. The balance is settled after the declaration. Official source
Only the 10% salary deduction is applied automatically (floor 509 EUR / ceiling 14,555 EUR, 2025 income). "Other income" is used as entered, without any deduction. Special half-parts (widowed, invalidity...) and the CEHR on very high incomes are not modeled. Official source

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Quick answer

French income tax for the 2026 declaration (2025 income) is computed by applying a five-bracket progressive barème (0%, 11%, 30%, 41%, 45%) to the household's taxable income divided by its quotient-familial parts, then multiplying back. Salaries first get an automatic 10% deduction (floor €509, ceiling €14,555). The family advantage is capped at €1,807 per additional half-part, and a décote softens modest amounts. Withholding during the year (prélèvement à la source) is an advance — the balance is settled after the declaration.

Not sure which forms to file? Use the free forms checker.

How the calculation really works

The 2026 barème (2025 income)

The barème is progressive: each slice of income (per quotient-familial part) is taxed at its own rate, so crossing a threshold never taxes your whole income at the higher rate — only the slice above it. Brackets below are the exact statutory thresholds set by the loi de finances pour 2026 (CGI art. 197):

Income per part	Rate
Up to €11,600	0 %
€11,601 to €29,579	11 %
€29,580 to €84,577	30 %
€84,578 to €181,917	41 %
Above €181,917	45 %

Quotient familial: parts and the cap

Your household's parts divide the income before the barème applies: 1 part single, 2 for a married/PACS couple, +0.5 for each of the first two dependent children, +1 from the third — and a parent isolé (box T) gets a full part for the first child. Because dividing income across parts pushes it into lower brackets, the law caps the advantage: at most €1,807 of tax saved per additional half-part (€4,262 for a parent isolé's first child). The estimator computes both legs and retains the legally correct one.

Décote and the 10% salary deduction

Two mechanics apply automatically. Salaries are reduced by a flat 10% for professional expenses before the barème (floor €509, ceiling €14,555 per household member, 2025 income) — unless you opt for real expenses, which this estimator does not model. Then the décote softens modest taxes: €897 (single) or €1,483 (couple) minus 45.25% of the gross tax, applied while the gross tax stays under €1,982 / €3,277.

The estimate is the start — the forms come next

An amount is only half the picture: the declaration itself is a set of official forms that depends on your income types. Our free forms checker maps your situation (rental, foreign accounts, crypto, self-employment…) to the exact 2042 annexes, each with its official impots.gouv.fr link.

Frequently Asked Questions

Barème brackets, quotient familial, décote, estimate reliability.

What is the income tax barème for the 2026 declaration?

Five progressive brackets applied per quotient-familial part to 2025 income (CGI art. 197, as indexed by the loi de finances pour 2026): 0% up to €11,600; 11% up to €29,579; 30% up to €84,577; 41% up to €181,917; and 45% above. Only the slice of income inside each bracket is taxed at that bracket's rate.

How does the quotient familial work?

The barème applies to taxable income divided by the household's parts, and the result is multiplied back: 1 part for a single person, 2 for a married or PACS couple, +0.5 for each of the first two dependent children and +1 from the third. A parent isolé (box T) gets a full part for the first child. The advantage is capped (plafonnement): at most €1,807 per additional half-part, and €4,262 for the first child of a parent isolé.

What is the décote?

A reduction that softens the tax for modest amounts (CGI art. 197, I.4): the gross tax is reduced by €897 (single) or €1,483 (couple) minus 45.25% of that gross tax, floored at zero. In practice it applies while the gross tax stays under €1,982 (single) or €3,277 (couple) for the 2026 declaration. The estimator applies it automatically after the quotient-familial cap.

How accurate is this estimate?

It is an indicative estimate computed from the published constants: the progressive barème, the automatic 10% salary deduction (floor €509 / ceiling €14,555, 2025 income), the quotient familial with its cap, and the décote. It deliberately does not model capital income taxed at the 30% flat tax (PFU), tax reductions and credits, the CEHR on very high incomes, or special half-parts (widowed, invalidity…). The authoritative figure is the DGFiP's own simulator on impots.gouv.fr.

Indicative estimate: AdminLanding is a technology platform, not an accounting or law firm, and does not provide personalized tax advice. This estimator applies the published 2026 barème (2025 income) to the information you enter, for information purposes only. Your final tax depends on elements not modeled here (PFU capital income, tax reductions and credits, CEHR, special half-parts…), and rules can change. The impots.gouv.fr simulator is the authoritative calculation — verify with official sources or a qualified professional (expert-comptable, avocat fiscaliste) before acting.

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EU-hosted • Barème 2026 (loi de finances pour 2026, CGI art. 197) • Official DGFiP simulator linked