A move changes several parameters taken into account by the CAF to calculate housing assistance: rent amount, geographical area, type of lease, household composition. Each of these changes can affect the amount of APL, or even lead to a temporary interruption of payments if the declaration is not made at the right time. Understanding which factors trigger a cutoff allows for action on the right levers.
CAF declaration deadline and risk of cutoff: what the data shows
The payment of APL is not automatically suspended during a move. The CAF continues to pay benefits as long as the file is active. The problem arises when the change of address and the new housing assistance request are declared late.
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The declaration must be made as soon as you move into the new home, via the “My Account” section on caf.fr, under “My procedures, Declare a change.” This procedure takes about two minutes according to the CAF itself.
The table below summarizes typical situations and their consequences on the continuity of assistance.
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| Situation | Declaration Deadline | Consequence on APL |
|---|---|---|
| Declaration in the month of moving | Immediate | Consideration of the first month’s rent, continuity of payment |
| Declaration the month following the move | 1 month delay | Possible one-month delay in payment |
| Transition from private housing to social housing (HLM, CROUS) | Variable | Change of assistance (APL to ALS or vice versa), possible one-month latency if the request is not made immediately upon signing the lease |
| Undeclared cohabitation or subletting | Not declared | Suspension then retroactive recalculation, risk of overpayments |
Knowing these tips to preserve APL during a move helps anticipate each scenario even before signing the new lease.
Change of housing type: APL, ALS and the trap of aid switching
Not all housing falls under the same assistance. APL applies to conventioned housing. ALS (social housing allowance) and ALF (family housing allowance) cover other situations. During a move, transitioning from a conventioned private apartment to HLM housing or a CROUS residence can trigger an automatic switch from one type of assistance to another.
This switch is not neutral. The CAF must close the existing right and open a new right. If the request is not submitted immediately upon signing the lease or occupancy agreement, a one-month latency may occur between the two payments.
Check the housing convention before signing
The landlord or manager can confirm whether the housing is conventioned APL. This information is also included in the lease. In case of doubt, ADIL (departmental information agencies on housing) provide free information on the type of assistance attached to a given housing.
Failing to check this point before moving in exposes one to an unpleasant surprise: a different amount of assistance, or even a period without payment while the new right is processed.
Co-living, subletting, and short furnished leases: three cases that complicate APL
Moves do not always occur to a standard housing with a standard lease. Three configurations deserve special attention because they increase the risk of suspension.
- Declared co-living with rent share: each roommate must declare their share of the rent to the CAF. Moving in with a partner who is already a tenant without updating the lease and CAF declaration can lead to a suspension, followed by a retroactive recalculation with repayments due.
- Subletting: since 2023, the CAF requires that any subletting be declared with the exact amount of the sub-rent and the type of lease. An undeclared subletting suspends assistance as soon as the CAF becomes aware of it.
- Short-term furnished leases: several ADIL report that rapid successions of short furnished leases (mobility lease, seasonal lease) create breaks in rights. Each new lease requires a new request, and the CAF processing time may exceed the duration of the lease itself.
In these three cases, the common point is the gap between the reality of occupancy and what the CAF has recorded. The larger the gap, the greater the risk of cutoff or overpayment.
Mobility lease and APL: a frequent incompatibility
The mobility lease, limited to a duration of one to ten months and non-renewable, does not always entitle one to APL. The housing must be conventioned to open a right, which is not systematic in the private furnished sector. Checking this point before signing avoids counting on assistance that will not come.
APL calculated in real-time: the effect of a change in income at the time of moving
Since the 2021 reform, APL is calculated based on the income of the last twelve rolling months, rather than the income of year N-2. A move often coincides with a professional change: starting a new job, relocation, job loss.
If income has increased over the past twelve months, the amount of APL in the new housing will mechanically be lower, regardless of the rent. Conversely, a recent drop in income may open a more favorable right.
The CAF automatically updates income data via tax flows. No additional steps are necessary for the income part. However, the new rent and new address must be declared manually, as the CAF does not receive this information automatically.
Anticipate the calculation before moving
The simulator available on caf.fr allows you to estimate the amount of assistance in the future housing by entering the new rent, postal code, and household composition. This approximate calculation gives an idea of the expected amount and helps identify a possible drop below the eligibility threshold before committing to a lease.
The continuity of APL during a move relies on a simple administrative gesture (declaring the change as soon as you move in) and on a prior verification of the type of housing and convention. Co-living, subletting, or short furnished leases add a layer of complexity that only a precise and timely declaration can manage without interruption.