Skip to Content

How to Change the Tenant on a Tenancy Agreement in Portugal

26 August 2026 by
How to Change the Tenant on a Tenancy Agreement in Portugal
Casamatch
​

When to use an addendum to change the tenant name

Several situations require replacing an existing tenant with a new one. Instead of terminating the lease and starting over, you can handle everything much more directly.

Changing the tenant name usually happens in these situations:

  • Divorce or separation of the couple living in the property

  • Death of the original contract holder

  • One flatmate leaving a shared rental agreement

  • A new tenant coming in to replace the outgoing person

  • Transferring the contract over to a corporate entity.

Is it possible to update the tenant without writing a new contract?

Yes, it is entirely possible. Portuguese law allows you to amend existing contracts by adding an attachment known as an addendum (adenda).

Using an addendum avoids having to cancel the original tenancy contract. This means the lease duration, renewal dates, and monthly rent amount stay exactly as originally agreed. It also saves you the extra cost and hassle of registering a brand new agreement on the tax authority (Finanças) portal.

Step by step to update the tenant details on the lease

To ensure the transfer of the lease runs smoothly, follow these straightforward steps:

  • Get explicit written agreement from the landlord, outgoing tenant, and incoming tenant

  • Collect the ID details and NIF (Número de Identificação Fiscal, Tax Identification Number) of the new tenant

  • Fill out the addendum document with all updated party details

  • Clarify how the initial security deposit will be transferred or settled

  • Sign three original copies of the addendum document

  • Update the contract details on the tax authority portal.


Download here a contract addendum template


FAQ


Do I have to report the tenant change to the tax authority?

Yes, any changes to the terms or parties of a tenancy agreement must be updated on the Portuguese tax portal to keep rent receipts and registration records accurate.

Who needs to keep a copy of the signed addendum

Each party involved must keep one signed original copy of the addendum: the landlord, the outgoing tenant, and the new incoming tenant.

Sign in to leave a comment