Income tax - How do I correct your return?

Verified 06 June 2025 - Directorate for Legal and Administrative Information (Prime Minister)

If you make a mistake or forget, you can correct your tax return. The terms and conditions vary depending on whether you are reporting online or on a paper form.

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You've reported your income online

The correction depends on the declaration concerned.

This is the 2025 income tax return for 2024

The process depends on the date of correction.

Before the deadline for filing your return

You can change your return from your particular space on the tax website (we talk about amending declaration).

You can do it as many times as you need.

Taxes: access your Special Space

You can correct the amounts entered in the boxes, check or uncheck the wrong boxes.

A confirmation email will be sent to you at the end of the procedure.

Please note

The 2025 income tax return for 2024 is complete. The deadline for submissions was June 5, 2025. The 2026 tax return for 2025 will begin in April 2026.

After the reporting deadline
June to July 2025

The online reporting service remains open.

You can correct your statement.

Taxes: access your Special Space

Warning  

If you file your return, and not just a correction, after the online filing deadline, you risk a penalty for late declaration.

August to December 2025
August to early December

If an error is found after receiving your tax noticeHowever, it will be possible to correct your return online, in your Special area on the tax website.

Taxes: access your Special Space

You can also use this service if you have received a automatic declaration.

Please note

If you have declared your income online on the mobile application "taxes.gouv", you can correct your declaration on smartphone or tablet.

You will need to click on “Go to Online Correction”.

You will be able to correct the amounts entered in the boxes, check or uncheck the incorrect boxes.

A confirmation email will be sent to you at the end of the procedure.

You will receive a new tax notice.

Then, your withholding tax rate will be updated.

Warning  

In certain situations, such as when these adjustments lead to a reduction in tax or the creation or increase of a tax credit, the administration may ask you for clarification and may refuse the requested correction.

You will not be able to correct some errors through the Online Correction Service.

This is particularly the case for the following:

  • Change of family situation (marriage, Civil partnerships, divorce, death, etc.)
  • Updating of civil status
  • Change of address.

You will need to request these changes using your secure email from your Private Space.

After Online Correction Service is Closed

After the end of the correction period for the online return, you will need to to lodge a complaint from your Private Space.

Taxes: access your Special Space

It's another tax return

If you did not make the correction on time, you can to lodge a complaint.

You can do it until december 31, 2025 for the 2023 tax return.

You can file your complaint online from your particular space.

Taxes: access your Special Space

You reported your income on paper

This is the 2025 income tax return for 2024
Before the deadline for lodging the declaration

You can not use the online remediation service.

You must file a new paper tax return to your personal income tax department.

You will need to specify the following:

  • Specify "DECLARATION OF AMENDMENT, REVOCATION AND REPLACEMENT" on the first page
  • Re-register all items you need to declare, including the correct items in 1re declaration.

2025 Income Tax Return 2024 (paper)

After the deadline for lodging the declaration

After receiving your tax notice, you can to lodge a complaint.

You can make your claim by one of the following means:

  • Online from your private space
  • By mail to your public finance center.

Taxes: access your Special Space

By mail, you will need to specify the following:

  • Last name, first name, address
  • Tax Number
  • Handwritten signature
  • Tax concerned
  • Reason for the claim together with your supporting documents.

Please note

You can also contact your tax office by phone or visit the office.

It's another tax return

If you did not make the correction on time, you can to lodge a complaint.

You can do it until december 31, 2025 for the 2023 tax return.

You can make your claim by one of the following means:

  • Online from your Private Space
  • By mail to your public finance center

Taxes: access your Special Space

By mail, you must specify the following:

  • Last name, first name, address
  • Tax Number
  • Handwritten signature
  • Tax concerned
  • Reason for the claim together with your supporting documents.

Please note

You can also contact your tax center by phone or go to the counter.

Who can help me?

Find who can answer your questions in your region

  • For general information

    Tax Information Service

    By telephone:

    0809 401 401

    Monday to Friday from 8:30 am to 7 pm, excluding public holidays.

    Free service + call price

  • To contact the local service managing your folder

    Department in charge of taxes (treasury, tax department...)