What are the penalties for making an error in your tax return?

Verified 01 January 2025 - Directorate for Legal and Administrative Information (Prime Minister)

If your tax return contains mistakes or forgetfulness leading to a reduction of your tax or an increase of a tax advantage in your favor, tax penalties are applicable.

In addition to an increase in your tax, you will have to pay late interest.

You will have to pay a surcharge of 10%.

It is applied to the additional tax you have to pay or to the amount of the benefit to which you are not entitled.

You can avoid this markup by one of the following 2 ways :

In the case of fraudulent maneuver or deliberate failure to comply, tougher penalties apply.

Interest on late payment is also charged.

They amount to 0.20% the tax due per month of delay (i.e 2.4% over 1 year).

FYI  

You will not be charged interest on late payment if you have notified the tax administration in writing of your questions during the filing your return.

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...)