Reminder: why must a lease be registered?

A lease agreement in Belgium must be registered with the FPS Finance within two months of signing. The lease must be registered so that the landlord retains their rights and so the contract acquires a fixed date enforceable against third parties.

This registration is free of charge for a primary residence lease. There is no financial reason to delay it.

The 6 major consequences of an unregistered lease

1. Loss of the right to indexation

Without a registered lease, the landlord cannot index the rent. No indexation is legally defensible. This principle applies in all regions. Indexation remains impossible even after regularisation (no retroactive effect).

For full details on indexation: rent indexation.

2. The tenant can leave without lengthy notice

The tenant of an unregistered lease can terminate the lease with a symbolic notice period (or no notice at all, depending on the case), without compensation. This is a major risk: the tenant can leave quickly, often at an unfavourable time.

3. No enforceability in the event of a sale

If the landlord sells the property, the buyer can refuse to take over the unregistered lease. A registered lease benefits from a fixed date enforceable against third parties (new owner, heir, creditor). Without registration, this protection disappears.

4. Tax fine for late registration

For a primary residence lease, there is no fine (registration is free). However, for a commercial lease or any other lease subject to registration duties, the delay can lead to a proportional fine.

5. Difficulty invoking clauses in the event of a dispute

Without official registration, the landlord may struggle to assert before the justice of the peace the exact rent amount, the originally agreed duration, or the specific clauses.

6. Boomerang effect: the tenant can register on your behalf

The tenant can register the lease themselves, at any time, free of charge for a primary residence. The landlord and tenant are then no longer on equal footing.

How to check if your lease is registered

For the landlord: log in to myminfin.be with your identity card or itsme. Open the section “Housing and my real estate”. If the lease appears with an official registration date, it is properly registered.

For the tenant: the tenant can also consult their personal MyMinfin space. If nothing appears, the tenant can register the lease themselves without the landlord’s consent.

Regularising an unregistered lease

The good news: you can regularise at any time.

  1. Gather the signed contract and annexes (inventory of fixtures, EPC).
  2. Log in to MyRent.
  3. Upload and validate.
  4. Keep the acknowledgement of receipt.

The procedure is identical via MyMinfin, whether you are in Brussels, Wallonia or Flanders.

Please note: regularisation does not grant retroactive rights. Missed indexations are permanently lost.

For a compliant lease from the start: create a lease online. For templates: lease agreement templates.