Family allowances cease in the month preceding the child’s 20th birthday. This rule, established by the Social Security Code, applies to almost all maintenance benefits paid by the CAF. However, the age limit is just one aspect of the system: the continuation of the right also depends on the young person’s level of income and the reality of their support by the household.
Income ceiling and maintenance of dependent child status after 16
Between the ages of 16 and 20, a child who earns a salary can still be counted as a dependent, provided that their net monthly income does not exceed 55% of the net minimum wage. Beyond this threshold, the CAF considers that the young person has sufficient independent resources and removes them from the beneficiary household.
This income criterion traps families whose child combines an apprenticeship contract or seasonal job with regular employment. An excess, even if only temporary, in a single month can lead to a retroactive recalculation of rights. We observe that the CAF applies control based on the nominative social declarations submitted by employers, not solely on the annual income declaration.
The question of at what age family allowances from the CAF stop is therefore not limited to a birthday: an 18-year-old employee who exceeds the ceiling loses the benefit of allowances just like a child turning 20.
Flat-rate allowance for the eldest at 20: conditions and duration
When the eldest child in a family of three or more reaches 20, the loss of a rank in the scale reduces the total amount of family allowances. To cushion this drop, the CAF pays a flat-rate allowance for one year, from the month of the 20th birthday until the month preceding the 21st birthday.
This flat-rate allowance is subject to two cumulative conditions:
- The child must have been entitled to family allowances in the month preceding their 20th birthday (i.e., be a dependent, under the income ceiling).
- The family must have at least three dependent children, including the eldest, at the time of the transition.
- The young person must not be a beneficiary themselves or the spouse of a beneficiary, regardless of the benefit concerned.
If the family goes from three to two dependent children at the same time (for example, if another child leaves the household), the right to the flat-rate allowance disappears. Payment is not automatic in all cases: we recommend checking the file in the personal space before the birthday month.
Family supplement until 21: a distinct age limit
The family supplement, reserved for families with at least three children whose resources do not exceed a certain ceiling, applies a age limit set at 21 and not 20. This one-year difference compared to standard family allowances is a frequent source of confusion.
In practice, a family can lose its family allowances on the 20th birthday of the eldest while continuing to receive the family supplement if it maintains three dependent children under 21. The reverse is also true: a 20-year-old child who exceeds the income ceiling simultaneously loses both benefits.
The same discrepancy exists for housing assistance, which includes dependent children up to 21 in its calculations. Family allowances, family supplements, and housing assistance do not apply the same age limit, which requires reasoning on a benefit-by-benefit basis.
Effective and permanent support: the criterion that the CAF actually controls
Beyond age, the CAF assesses whether the beneficiary ensures the effective and permanent support of the child. This includes housing, food, and clothing. An adult child who leaves home to live with a third party or in independent housing can be removed from the beneficiary household even if they are under 20.
Several common situations trigger a reassessment:
- The young person goes to study in another city and receives housing assistance in their own name: they can no longer be listed as a dependent child of the parent.
- The child lives in shared custody after a separation: the support is then shared between the two parents, which alters the amounts paid to each.
- A child stays abroad for more than three months outside of exceptional cases (studies or care in a bordering country with regular return): the allowances are suspended.
Reporting these changes falls under the beneficiary’s declaration obligation. A delay in declaration exposes them to an overpayment, meaning a repayment of amounts received in error, which may be increased in certain cases by penalties.
Increase for age and ongoing reform: what is changing
Family allowances are increased when the child turns 14. This increase logically ceases at the same time as the main allowance, that is, in the month preceding the 20th birthday. For families with two children, the increase does not apply to the eldest, only to the second.
Recent developments are changing the timing of the increase for certain families. The reform only concerns new cases, creating a gap between families that entered the system before and after the application date. Checking specific conditions via the CAF simulator remains the most reliable method to estimate the actual amount received.
The cessation of family allowances results from a combination of criteria: the child’s age, their level of independent income, the reality of support by the household, and the type of benefit concerned. Reasoning solely in terms of age exposes beneficiaries to surprises during the quarterly or annual recalculation of rights.