Annual revaluation of maintenance

Verified 01 April 2026 - Public Service / Directorate of Legal and Administrative Information (Prime Minister)

Revaluation as of January 1, 2026

For revaluations to be made with the last known index, the new index is:

  • 99.87 for the consumer price index - All households - France - Set excluding tobacco, baseline 2025
  • or 100.03 for the consumer price index - Urban households whose leader is a worker or employee - France - Ensemble hors tabac, baseline 2025.

Not sure how to calculate the new support amount? Did the parent who pays child support not apply the annual revaluation? We explain how to revalue it.

Revaluation of maintenance

The amount of support will vary when the judgment, divorce agreement or parental agreement provides for a indexing clause in order to monitor the evolution of a consumer price index. We are then talking about revaluation child support. The family court judge does not have to be seized in order to increase the level of maintenance.

Review of maintenance

The amount of child support may also vary for take into account the changing needs of the child and the income of each parent. We are then talking about review of the amount of maintenance.

In the event ofagreement between parents, a parental agreement may be established. It can be approved by the Jaf: titleContent.

In the absence of an agreement between parents on a new amount, we must seize the Jaf to fix it.

It's the parent which pays maintenance (the debtor) which must calculate the annual revaluation.

He must do it spontaneously, without waiting for the parent creditor child support claims it from him.

Warning  

If financial intermediation has been established for the payment of maintenance, Caf: titleContent carries out the annual revaluation itself.

Support payments must be increased every year.

The date of the revaluation is indicated in the judgment of the Jaf: titleContent or in the divorce agreement or in the parental agreement.

In principle, the revaluation is scheduled at a fixed date, most often at 1er January, at 1er July or anniversary date of judgment.

To know how to calculate the new amount, you must follow the instructions given in the decision rendered by the Jaf: titleContent or the divorce agreement or the parental agreement.

You should note the following:

  • Date on which the 1re revaluation
  • Periodicity (frequency) of pension increases. In principle, the revaluation is planned every year on a fixed date (example: at 1er January or anniversary of the judgment).
  • Benchmark or base index that is, the index by which you will divide.

The indices can be found on the website of theInsee: titleContent. You must take the clue indicated in the judgment or in the agreement.

The most common are: all households or urban households whose chief is a laborer or employee.

New index : it is usually the last index published in the OJ on the date of the revaluation, also formulated last known index or latest index in force. Sometimes it can also be the index of a given month (for example the index of the month of August preceding the revaluation).

For example, for a revaluation occurring at 1er January, on latest index published in the OJ at the date of revaluation corresponds to the november index of the year n-1, an index generally published in mid-december of the year n-1 and in force at 1er January.

Benchmark : This may be the index in force on the day of the decision, the index published on the day of the decision, the index for the month of the decision, an index for a given month (for example the index for the month of June 2021).

For example, the index in force on the date of the decision, for a decision rendered on 8 July 2019, is the index published in the OJ on 8 July 2019, that is to say the index of May 2019 (as published in the OJ on 15 June 2019). We should not take the June or July 2019 index because they were not published at the date of the judgment.

Example :

You must reassess at 1er January 2026 a pension of an initial amount of €300.

Your judgment of June 4, 2020 states that you must use the urban consumer price index and the following revaluation formula:

Revalued amount of pension =Initial amount of the pension X last index published in the OJ on the valuation date / index in force on the date of the decision

The last index published in the Official Journal (OJ) on 1er January 2026 is November 2025, or 100.03.

The index in effect on June 4, 2020 is that of April 2020, or 87.07.

The calculation is: 300 x 100.03 / 87.07 = 344.65.

The amount of the upgraded maintenance is €344.65.

You must round to the nearest or higher euro, if specified in the decision or convention.

To do your calculation, you can use the simulator available on the website of theInsee: titleContent :

Calculating the revaluation of child support

The approach varies depending on the situation:

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There are missing elements in the decision to do the calculation

If there is a missing element for the calculation of the child support revaluation, a query in interpretation may be addressed to Jaf: titleContent of the court that issued the decision. For example, the entire calculation formula or part is missing.

You have to take a lawyer if it was already mandatory in the procedure that gave rise to the incomplete decision (for example if it was a divorce procedure).

In other cases, you can do alone the request for interpretation on free paper.

There is an error in the revaluation formula

If the decision contains an error (for example, if the benchmark and the new benchmark are the same), a request for correction of hardware error may be addressed to Jaf: titleContent. It is the court that made the decision that has jurisdiction.

You have to take a lawyer if it was already mandatory in the procedure that gave rise to the incomplete decision (for example if it was a divorce procedure).

In other cases, you can do alone your request for interpretation on free paper.

The upgrading has not been done for several years

You can claim back child support revaluation arrears of the last 5 years.

You can find out the amount of revaluation arrears for each year calculating the difference between the amount paid and the amount that should have been paid.

You can use the INSEE simulator to do your calculations over several years:

Calculating the revaluation of child support

If the parent debtor refuses to pay you the arrears, you can call on a commissioner of justice.

You can ask for the intervention of theAripa: titleContent to recover sums due in addition to current maintenance in the limit of the last 5 years.

The revaluation is not done by the debtor parent

You do not have to re-enter the Jaf: titleContent to request revaluation.

The parent debtor must spontaneously increase the pension without the parent's prior request creditor.

However, the creditor parent may carry out the calculation himself. He must then communicate the new amount to be paid to the debtor parent.

If the debtor parent refuses to pay the new calculated amount, the parent creditor of the pension may appeal to a commissioner of justice.

You can ask for the intervention of theAripa: titleContent to recover sums due in addition to current maintenance in the last 2 years limit.

Several decisions follow one another

You must calculate the new amount with the particulars given in the last decision amending the amount of maintenance.

The debtor and the creditor disagree on the new calculated amount

If there is a disagreement on the calculated amount, you can use the simulator available on the INSEE website to justify your calculation to the other parent:

Calculating the revaluation of child support

If you are the parent creditor from the pension, you can also call on a commissioner of justice to calculate and recover the amounts due:

Calculating the revaluation of child support

Who can help me?

Find who can answer your questions in your region

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