Guides4 Sept 20264 min read

Declaring a Lease with AADE: Deadline, Amendments and Termination

When a Greek tenancy must be declared, what to do about mistakes, how to declare its termination — and what applies to co-owners and owners living abroad.

mmamaXO Editorial Team · Editorial
Kitchen with a breakfast bar in a renovated Athens apartment
Quick answer

The lease declaration is filed by the landlord in myAADE by the end of the calendar month following the start of the tenancy. Mistakes are fixed with an amending declaration. When the tenancy ends, its termination must be declared too — otherwise rental income keeps being pre-filled for a property that may already be empty.

Key takeaways
  • Deadline: the end of the calendar month following the start of the tenancy.
  • A late declaration is filed through the same application but carries a fine — check the current amount on AADE's site, not in old articles.
  • A mistake in the declaration is fixed with an amending declaration — not by ignoring it.
  • The termination of a tenancy must be declared as well; skipping it is the omission that costs the most time.
  • With co-owned property, one co-owner declares with the ownership percentages — income is split accordingly.

Your lease is already filed? Find and print it

The declaration lives in myAADE: we show the exact menu path, what the proof looks like, and what to do when the lease is not in the list.

In this article
  1. Who declares, and by when
  2. What if the deadline has passed
  3. A mistake was made: the amending declaration
  4. The tenancy has ended: declare the termination too
  5. Co-owned property: who files
  6. Owners living abroad
  7. If you would rather not track any of this

The electronic declaration of a lease to AADE has replaced the old stamping of contracts at the tax office: the landlord signs the private agreement and declares its details in myAADE. The submission steps are shown in our lease declaration guide — here we answer the questions that come after: deadlines, mistakes, termination, special cases.

Who declares, and by when

The declaration is filed by the landlord, with their own Taxisnet credentials, by the end of the calendar month following the start of the tenancy. A tenancy that began on, say, 10 September must be declared by 31 October. The tenant does not file — they are notified in their own myAADE account and accept the declaration from there.

What if the deadline has passed

A late declaration is filed normally through the same application, but it carries a fine. The amount is set by tax legislation and has changed in the past — so do not look it up in old articles: check the current figure on AADE's site before filing. What is certain: the earlier it is done, the more simply the matter closes.

A mistake was made: the amending declaration

If anything in the declaration does not match the signed contract — amount, dates, details — the right fix is an amending declaration by the landlord. A mismatch left alone is the one that surfaces later in the most awkward places: the tenant's benefit application, the pre-filled tax return, a dispute.

The tenancy has ended: declare the termination too

The termination of a lease is declared in the same application. If it is skipped, the tenancy stays 'active' in AADE's records and rental income keeps being pre-filled — for a property that may already be empty or have a new tenant. Cleaning this up afterwards is more painful than declaring on time.

Co-owned property: who files

When the property has several owners, one co-owner files the declaration, entering the ownership percentages. The income is then split proportionally across each owner's tax return.

Owners living abroad

The declaration requires Taxisnet credentials. Owners outside Greece who have no credentials — or no wish to deal with the application — usually assign the declaration to an accountant or to a property manager with authorisation. This is standard practice for foreign owners of Greek property.

If you would rather not track any of this

When mamaXO manages the tenancy, the contract, the declaration, any amendments and the termination filing are all handled by us — along with finding the tenant and collecting the rent. See how it works for owners. And if you are still missing the contract itself, build it free here.

General information, not legal or tax advice. Greek procedures and deadlines change — verify with the official source before acting.

Frequently asked questions

When must a lease be declared to AADE?
By the end of the calendar month following the start of the tenancy. The landlord files it in myAADE with their Taxisnet credentials.
What is the fine for a late lease declaration in Greece?
A late declaration carries a fine set by tax legislation, and the amount changes. Check the current figure on AADE's site before filing — do not rely on an old number.
How do I correct a mistake in a lease declaration?
With an amending declaration by the landlord, through the same myAADE application. The goal is for the declaration to match the signed contract exactly.
Must I declare the end of a tenancy?
Yes. Without a termination declaration the tenancy remains active in AADE's records and rental income keeps being pre-filled in your tax return.
Can my accountant file the lease declaration?
Yes — in practice many declarations, especially for owners abroad or complex co-ownership, are filed by an accountant.

Build your lease (μισθωτήριο) free in 3 minutes

Term, rent, deposit, who pays what — to the 2026 rules, in Greek and English. Ready to send for signature; then declare it with ΑΑΔΕ.

About mamaXO

mamaXO is an Athens-based long-term rental platform: verified listings, signed leases and managed handovers for tenants and property owners. Our guides are written by the mamaXO team and reviewed by our in-house specialists. Learn more