Are you married or legal cohabitant but your tax return doesn’t include your partner?

If you are married or in a legal cohabitation, you must introduce a joint tax return with your partner.

In some cases, it is possible that your partner isn’t (wrongly) mentioned in your tax return.
 

What to do if I’m concerned?

  • 1. Mail a document attesting of your family situation

    Mail a document attesting of your family situation on January 1, 2020.

    SPF Finances - Centre P Bruxelles INR - Gestion
    Avenue Prince de Liège 133 bte 516
    5100 Jambes

    This document must be written in French, Dutch, German or English. If that’s not the case, have it translated by a sworn translator.

    You (and/or your partner) have a have a Belgian "national registration number" or a Belgian "bis number"? Mention it on the document. You will find this number on your Belgian identity document (identity card, residence permit,…) or on your Belgian income sheets (in some cases).

    We will then adapt your file.

  • 2. Fill out your tax return on paper

    Mention your partner's contact information on the tax return.

    First and last name

    National number or bis number

    Does your partner have a Belgian "national registration number" or a Belgian "bis number"? If yes, mention it under "NN (partenaire)". You will find this number on your Belgian identity document (identity card, residence permit,…) or on your Belgian income sheets (in some cases).

    If your partner doesn’t have a Belgian national registration number or a Belgian bis number, leave the field empty.
     

    3. Complete section III, A, 4.2.

    Déclaration : partie 1, cadre 3, A, 4.2

    Mention:

    • on every 1st row : your personal data
    • on every 2nd row : your partner’s data.

       

    4. Complete the rest of your tax return and sign it.

    • Mention all the codes and value concerning your partner in the second column of the tax return.
    • Both of you must sign the tax return.
       

    It is not possible to file your return via MyMinfin (Tax-on-web). Have you saved or already sent your tax return in MyMinfin (Tax-on-web)? Send a paper tax return anyway. We will only take into account your paper tax return.

    You have not received a paper tax return? Please contact your local tax office. We will send you a tax return by post mail.