Why arrange an AFM before renting or buying?
An AFM is your Greek tax identification number. Arrange it early when planning a property transaction so that identification and tax administration do not become last-minute obstacles. However, it is inaccurate to say that every lease without a tenant AFM is automatically invalid.
AADE’s rental FAQ distinguishes the landlord’s AFM requirement from the tenant’s details. It describes an exception for foreign tenants, using identity-document details, permanent address and country of origin. Ask the person handling the declaration whether this exception fits your circumstances. The tax declaration and the private rental contract are separate matters; a filing problem is not, by itself, a legal assessment of the contract.
How do I apply?
Start with AADE’s current digital application for an AFM and authentication key. You can apply yourself or use an authorised person. Adults acting for themselves can use myAADElive video identification; representatives use the applicable digital route. Follow the instructions for your applicant category rather than relying on an old list of paper forms.
Prepare a valid identity document and the supporting documents requested for your circumstances. Requirements can differ for adults, minors, residents and non-residents. Check the official checklist before arranging translations, certification or an appointment.
Do I need a notarial power of attorney?
Not in every case. AADE’s instructions for appointing a tax representative accept specified forms of authorisation, including a declaration with an authenticated signature or a gov.gr declaration; a notarial document is another possible form. Appointment of a tax representative and authorisation to submit an application or receive credentials are distinct steps. Check which authorisation your chosen route requires, especially when signing documents abroad.
Can I apply from abroad?
AADE provides remote application and identification routes. Read its myAADElive instructions for the documents, video appointment and delivery of credentials. Do not assume that travelling to a particular tax office is necessary or that remote applications always require notarisation. Appointment availability and document checks affect timing; this guide does not promise same-day or one-week completion.
What happens after issuance?
Keep your tax number and authentication credentials secure. Follow AADE’s account-activation instructions and check that your registered contact information is correct. Share the identification details needed for your transaction with the responsible professional, but never give a landlord your personal login credentials.
When must the landlord declare the lease?
AADE states that the lease declaration is due by the end of the month following the start of the lease or its amendment. This is not a universal “30 days from signing” deadline. For example, a lease starting on 10 September normally has a declaration deadline of 31 October. The tenant’s acceptance process is a separate step; see our myAADE lease acceptance guide.
What should owners prepare next?
Before handing over a property, agree who will prepare the contract, verify the tenant’s details and submit the tax declaration. Use our residential lease tool for a suitable residential agreement, and check any unusual circumstances with the appropriate professional.
If you own a rental property in Athens and want help organising the tenancy, see property management for owners. Tell us whether the property is vacant, already rented or needs preparation so we can discuss the relevant next step.
This guide explains the administrative process. It does not determine the legal validity of an individual contract or replace advice on a specific tax or immigration situation.



