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CO2/weight: how do i apply for the large family discount?

Verified 03 mai 2022 - Legal and Administrative Information Directorate (Prime Minister)

Additional cases ? Malus CO2 / Weight Malus

You bought a car and you 3 or more dependent children ? You can benefit from reduction CO2 and weight malus. We explain the conditions to be completed and claim refund tax.

Which families are affected?

Reducing CO2 malus and weight malus concerns a family of 3 or more dependent children, family benefits, including host family.

What are the requirements?

The 4 must be completed on the date ofre vehicle registration in France :

  • Family 3 or more dependent children
  • Vehicle with 5 or more seats, registered for 1re times in France.
  • Vehicle boughtor vehicle rented under a long-term rental formula
    In case of a lease, it may be a contract LOA (leasing) leasing).
    It may also be a contract LDD of a duration of 2 years or more, signed in 2021 or after
  • The family must be the owner or tenant indicated on the 1to vehicle registration certificate issued in France
    A demonstration or steering vehicle, including 1toCertificate of Registration in the name of the trader is not of the W or WW series, does not qualify for reduction of the malus.

  Please note : the reduction shall apply to the limit of one vehicle per tax centre.

How much is the reduction?

Reducing CO2 malus is 20 g/km per child or 1 ch per child.

Reducing weight malus is 200 kg per child.

Example :

If your vehicle's CO2 emission rate is 218 g/km, you get a discount of 20 g/km per child, for 3 children, 60 g/km (3 x 20). The reduced CO2 emission rate shall be 158 g/km (218 - 60) with a malus of €1,901 (2022 tariff applicable on the 1re registration in France).

One simulator allows you to evaluate the amount of the refund according to your situation:

CO2/Malus by weight: what refund do you get?

Directorate of Legal and Administrative Information (Dila) - Prime Minister

How do I claim the refund?

The CO2 and weight maluses must be paid when registering the vehicle.

You must claim refund.

The refund request must be made before 31 December ofe year following registration.

For example, before 31 December 2024 for a vehicle registered in 2022.

Application for reimbursement of the CO2

The application must include the following documents:

  • CO2 Malus Tax Rebate Application Form, completed and signed
  • Copy of vehicle registration certificate (carte grise) issued on behalf of the applicant
  • Bank Identity Statement
  • Copy of an identity document (national identity card, driver's licence, passport, birth certificate or family booklet)
  • For your children attached to your home, document(s) issued by Caf of the number of dependent children, or a copy of the family register to justify the number of dependent children family benefits
  • If you host family, your employer's or your spouse's employer's document showing the number of children

Request must be sent via the internet via the secure messaging of your personal space on taxes.gouv.fr.

You can also send your request by mail the tax department whose contact information appears on your last income tax notice.

You are refunded by bank or postal transfer.

Taxes: access your Home

Ministry of Finance

Application for reimbursement of the weight

The application must include the following documents:

  • Weight refund claim form, completed and signed
  • Copy of vehicle registration certificate (carte grise) issued on behalf of the applicant
  • Bank Identity Statement
  • Copy of an identity document (national identity card, driver's licence, passport, birth certificate or family booklet)
  • For your children attached to your home, document(s) issued by Caf of the number of dependent children, or a copy of the family register to justify the number of dependent children family benefits
  • If you host family, your employer's or your spouse's employer's document showing the number of children
  • If you have already benefited from the refund of the tax malus by weight, proof that you no longer have the vehicle that received the refund: copy of the declaration of sale of the vehicle or document certifying the end of the lease

Request must be sent via the internet via the secure messaging of your personal space on taxes.gouv.fr.

You can also send your request by mail the tax department whose contact information appears on your last income tax notice.

You are refunded by bank or postal transfer.

Taxes: access your Home

Ministry of Finance