Declaring Income Resources

Most CAF benefits depend on household income, so accurately declaring your financial resources is essential for correctly calculating your rights. This declaration is usually made automatically via your tax return, but you may sometimes need to correct or directly update this information.

This page explains when a direct declaration is needed, what information to provide, and offers a ready-to-use letter template, plus a tool to automatically generate your personalized letter.

When should you write this letter?

• You notice an error in the resources registered with CAF;
• Your income has changed significantly since your last tax return;
• You received exceptional income that needs to be declared;
• You had difficulty declaring online;
• You need to justify the source of a specific income.

In all these cases, a written letter remains a reliable way to correct or update your file.

Required information to include

• Your first and last name and beneficiary number;
• The period concerned by the declaration;
• The source and amount of the income concerned;
• The reason for the error or change observed;
• The list of documents attached (payslips, tax notice, etc.).

The more accurate this information is, the faster your request will be processed.

Official letter template

Important note: the letter sent to CAF must be written in French, as it is a French administration. Below is a template you can use as a basis.

[First name LAST NAME]
[Full address]
[Beneficiary number]

CAF of [Department]
[CAF address]

Written in [City], on [Date]

Subject: Correction of my income declaration

Dear Sir/Madam,

I am informing you of an error/change concerning my resources for the period [period], the correct amount being [amount].

[...]

→ The complete letter, tailored precisely to your situation and ready to send, is generated automatically in 3 minutes using the tool above.

Frequently Asked Questions

Do I need to declare my resources every month?

No, your annual tax data is usually used, with quarterly updates for some benefits like housing benefit.

What if I forgot to declare certain income?

It's advisable to correct the situation quickly to avoid any later problem or repayment claim.

Do grants and gifts affect my resource calculation?

Some grants are exempt, others are counted; it's advisable to check the nature of each amount when in doubt.

How do I correct an error in the registered income?

Via a detailed letter attached with documents proving the correct amount.

Does an incorrect declaration affect my future benefits?

Yes, it could lead to repayment claims or temporary suspension, so prompt correction is preferable.