International buyers looking at property in the Algarve usually run into the same three administrative questions early on. Do I need a NIF? Do I need to register with AIMA? And do I need to be a resident to buy here? The short answers are yes, sometimes, and no, but the detail matters for anyone planning more than the occasional summer visit.
These are not steps to take in a panic at the last minute. The longer they sit on the to-do list, the more friction they cause at the point of purchase, opening utilities, or signing for the deed. We see this most often with UK and US buyers who assumed Portugal would feel like a familiar EU process. Since Brexit, it doesn’t, and post-October 2023 the residency framework changed again.
Quick Answer
- NIF: required to buy property, open a bank account, sign utility contracts
- AIMA registration: only relevant if you are applying for residency
- Residency: not needed to own Algarve property
- Schengen 90/180-day rule still limits stays for non-EU buyers without residency
- AIMA processing in 2026 is running well behind official targets
1. The NIF (Número de Identificação Fiscal)
The NIF is the Portuguese tax identification number. Every property buyer needs one. Without it you cannot sign a CPCV, complete an escritura, open a Portuguese bank account, or be a billing party on a utility contract. EU citizens can apply directly at any Finanças office. Non-EU citizens, including UK, US and Canadian buyers, technically need a fiscal representative resident in Portugal to apply on their behalf, although this is sometimes worked around by applying in person while in the country.
Most overseas buyers we work with appoint a Portuguese lawyer or accountant as fiscal representative, which is the cleanest route. Costs typically sit between €100 and €300 a year for ongoing representation. The Portal das Finanças is where the NIF then gets used for tax filings, IMI assessments and similar.
2. AIMA and What Replaced SEF
Until 2023, residency permits and visa-related processes were handled by SEF (Serviço de Estrangeiros e Fronteiras). SEF was dissolved and its functions transferred to AIMA, the agency that replaced SEF in 2023. AIMA handles residence permits, renewals, and the related administrative steps. If you are applying for any kind of Portuguese residency, AIMA is the body you will deal with.
Two practical points are worth knowing. First, AIMA is dealing with a substantial backlog. Official processing targets sit at 30 to 90 days, but realistic processing in 2026 is more often six months to over a year, depending on visa type and where you apply. Second, AIMA does not handle the visa application itself when you are still abroad. That sits with the Portuguese consulate in your country of residence. AIMA picks up after you arrive in Portugal.
3. Do You Need to Be a Resident to Buy Property in Portugal?
No. Foreign buyers, EU and non-EU alike, can purchase Portuguese property without being a resident. Owning property here does not automatically give you any residency rights either. Many of our overseas owners hold their Algarve property purely as a holiday home or seasonal use, with their main residence elsewhere.
What changes if you are non-EU is the time you can spend in Portugal. The Schengen rules limit non-resident, non-EU visitors to 90 days in any rolling 180-day period across the entire Schengen area. UK buyers in particular often plan to spend more time than that and need to think about a residency route as a separate decision from the purchase itself.
4. The Residency Routes Most Property Buyers Look At
Three visa types come up most often:
- D7 (passive income): €920 per month minimum in 2026, plus 50% for a spouse and 30% for each dependent child. Pension, rental income, dividends, royalties qualify. Suits retirees and those with stable passive income.
- D8 (digital nomad): around €3,480 to €3,680 per month in active or remote employment income. Suits remote workers who can document an overseas employer or freelance income.
- Golden Visa: still active, but the property route closed in October 2023. Current routes include qualifying investment funds (€500k minimum, five-year hold), cultural contributions (€250k), or scientific research (€500k). Real estate is no longer eligible.
Each of these is a separate process from the property purchase itself, and none of them is required if you are content within the 90/180 limit.
5. The Order Most Buyers Should Follow
- Apply for a NIF (via fiscal representative if non-EU)
- Open a Portuguese bank account using the NIF
- Decide whether residency is part of the plan
- If yes, apply for the relevant visa at the consulate before travelling
- Complete the property purchase (NIF only is required for this)
- Once in Portugal under a visa, register with AIMA for the residence permit
Common Mistakes
- Assuming property ownership grants residency rights
- Leaving the NIF application until contract stage
- Confusing the consulate visa step with the AIMA residence permit step
- Believing the Golden Visa real estate route still exists
- Underestimating AIMA backlog when timing a move
Summary
A NIF is the only piece of administration you must have to buy property in the Algarve. AIMA only enters the picture if you intend to live here for more than 90 days in 180. Residency and ownership are two separate decisions, and treating them as one is where most of the avoidable trouble starts. The UK Government’s guidance on living in Portugal and reading our piece on fiscal representation for non-resident property owners are useful reference points.
Considering Buying in Lagos
If you are looking at property in Lagos and the western Algarve and want to discuss how the administrative side fits with your purchase plan, please get in touch. At B&P Real Estate, we can introduce you to the lawyers and accountants we work with regularly, who can act as your fiscal representative, advise on the right residency route if you need one, and handle the Portuguese-side process from there.
