Tax on the household, not the person
France does not tax you purely as an individual. The tax office looks at your household, divides its taxable income by a number of shares (parts fiscales), applies the progressive rates to one share, and then multiplies the result back up. This is the family quotient, and it is why a couple with children often pays far less than a single person on the same total income.
The rates for 2026
For income earned in 2025 and taxed in 2026, the scale per share is:
- 0% up to €11,600
- 11% from €11,600 to €29,579
- 30% from €29,579 to €84,577
- 41% from €84,577 to €181,917
- 45% above €181,917
Salary also gets a standard 10% allowance for work expenses, with a minimum of €509 and a maximum of €14,555. You can claim your real expenses instead if they are higher.
How many shares do you get
- A single person: 1 share.
- A married or PACS couple: 2 shares.
- Each of the first two children: 0.5 share.
- Each child from the third onward: 1 full share.
Example 1: single, €40,000 net taxable salary
The 10% allowance takes off €4,000, leaving €36,000 and one share.
- €11,600 to €29,579 is €17,979 at 11%, so €1,977.
- €29,579 to €36,000 is €6,421 at 30%, so €1,926.
Income tax is about €3,904 for the year, or roughly 9.8% of the net taxable salary.
Example 2: married with three children, €80,000 household salary
After the 10% allowance, taxable income is about €72,000. A couple with three children has 4 shares (2 for the adults, 0.5 and 0.5 for the first two children, and 1 for the third).
- Income per share is €18,000.
- Tax on one share is €6,400 at 11%, so €704.
- Multiply by 4 shares and the household owes about €2,816.
Without the children, the same couple would owe about €7,808, so the family quotient saved close to €5,000.
The cap on the benefit
The saving from children is capped. For 2026, each half share can reduce tax by no more than €1,807. For higher earning families, the cap bites and the real saving is lower than the maths above suggests.
The décote
Low tax bills get a discount called the décote. In 2026 it applies when the tax is below €1,982 for a single person or €3,277 for a couple. It can reduce a small bill to zero.
Pay as you earn
Since 2019, France collects income tax through withholding at source (prélèvement à la source). Your employer takes a rate set by the tax office, shown on your payslip. You still file a yearly return, and the final bill is settled against what was already withheld.
Single parents and shared custody
A parent raising a child alone gets an extra half share on top of the usual child share, so a single parent with one child has 2 shares in total. If you do not live with the other parent and care for the child alternately (garde alternée), each parent gets a smaller share: 0.25 for each of the first two children and 0.5 from the third. The tax office splits it by what you declare, so both parents should file consistently.
Adult children
You can attach a child to your tax household until they turn 21, or 25 if they are still in full-time study. An attached child adds to your shares. The other option is to deduct a pension alimentaire for the support you give an older child, but you cannot do both for the same child in the same year. Run both versions of the numbers before you choose, because one is often clearly better depending on your marginal rate.
A mistake I see often
People assume the family quotient makes tax disappear for large families. It does not. Take two couples on the same income with three children. The first has a low taxable income and benefits fully. The second is in the 41% band, hits the cap on each half share, and ends up with far less relief than the share count suggests. The tax office works out your tax twice, with and without the children's shares, and limits the saving to the cap. So for higher earners, the real benefit is the capped amount, not the full difference.
What to do
- Check your tax notice for the number of shares the tax office applied.
- Tell the tax office within the deadline if your household changes, for example a birth, marriage or separation.
- Test your own figures in our France salary calculator.
Always check the current scale on impots.gouv.fr before you file.
