Key figures — as of 2026-09-07: Tenants must now submit a lease plus the previous month's rent receipt registered with Finanças — Junta de Freguesia certificates are no longer accepted — over 34,000 residency and visa applications were rejected in 2025, with non-compliant leases a primary cause — landlords avoid registering leases to dodge a stamp duty of just 10% of one month's rent.
The document that now decides your residency file
AIMA has tightened what counts as valid proof of accommodation for residence permit applications and renewals, and the change lands hardest on foreigners who rely on informal or "off the books" rental deals. According to AIMA's accommodation proof rules, applicants must submit a sworn declaration of residential address along with documents proving the legal basis for occupying the property — either an access code to the permanent land registry certificate for owners, a lease agreement plus the previous month's rent receipt for tenants, or a comodato contract with land registry certificate for those living rent-free in someone else's property. Parish council address certificates, once a common workaround, are explicitly out: AIMA expressly states that certificates issued by Juntas de Freguesia are not accepted as proof.
The critical detail is the rent receipt. It isn't enough to show a signed contract — the receipt has to be one Finanças actually recognises. As one legal guide puts it, "the rent receipt registered with the Tax Authority will only exist when the contract has been duly communicated to the Tax Authority (Finanças)". In other words, if the landlord never told Finanças about the tenancy, there is no valid receipt to show — and no way to satisfy AIMA.
Why this shuts the door on informal deals
Portugal's rental market runs on a large undeclared segment, and lawyers tracking AIMA cases say that's exactly where applicants are getting stuck. In practice, some landlords do not register the contract, often to avoid paying imposto do selo, calculated at 10% of one month's rent. That's the whole basis for the resistance: a landlord charging, say, €900 a month is dodging a one-off €90 stamp duty payment — worth roughly 0.8% of the annual rent they collect — while leaving their tenant unable to complete a residency file that can take 12 months or more to process.
One legal commentary frames the scale of the problem bluntly: in 2025 alone, AIMA rejected over 34,000 residency and visa applications, with non-compliant lease agreements being a primary cause for denial. The same source notes the toughest cases are exactly the ones common in Portugal's tight rental market — informal housing including subletting rooms without the primary landlord's knowledge or living under verbal agreements, plus tenants dealing with landlords who prefer rent "under the table" and are highly unlikely to sign an official, notarized document that would create a legal record for the tax authorities.
Once a lease is properly registered, the landlord receives a Modelo 2 form — the official proof of registration that applicants must request and include in their application — and rent payments should generate an official electronic receipt ("recibo de renda eletrónico") that appears in the tenant's personal e-Fatura. Neither document exists if the tenancy was never declared.
The GrowIN calculation
Run the numbers on a typical Lisbon or Porto rental at €900/month and the landlord's stamp duty bill for registering is around €90 — a one-time cost equal to about 0.83% of the €10,800 they'll collect over a year. Refusing to register to avoid that sum, while it may also shield undeclared rental income from IRS, now carries a much bigger downstream cost for tenants: a residency file that can be rejected outright, forcing months of delay while a new, compliant lease is arranged. GrowIN Portugal Editorial: "A landlord's decision to save under €100 in stamp duty can cost their tenant a year of residency progress."
What foreigners should actually do
Before signing anything, ask the landlord directly whether they intend to register the lease with Finanças and provide a Modelo 2. If they won't commit, treat that as a red flag rather than a negotiating point. Applicants already mid-tenancy with an unregistered lease should check their Finanças portal to confirm whether the contract shows up under their NIF; if it doesn't, raise it with the landlord immediately rather than waiting for the AIMA appointment. Property owners applying on their own behalf should have their certidão predial permanente access code ready in advance — AIMA increasingly expects this rather than a physical certificate. Those without a lease in their own name — living with a partner, friend, or family member — will need the sworn declaration route plus a Certidão de Domicílio Fiscal from Finanças, dated within the last 30 days, and should build in extra time for notary and documentation steps.
What to watch next
AIMA's FAQ was last updated in March 2026 and the agency continues to refine accommodation rules on a rolling basis, so requirements at the appointment desk can shift faster than published guidance. Anyone starting a residency file — first application or renewal — should check current requirements directly against AIMA's published FAQ before booking an appointment, and should not assume a signed contract alone will suffice. For a full walkthrough of Portugal's residence permit routes and documentation, see our visas hub; for NIF and Finanças-related steps that feed into this process, see tax & NIF.
Foreigners moving to Portugal now face a hard rule: an unregistered lease is a liability for a residency case, not a private arrangement between tenant and landlord.