Foreigners face no restrictions buying in Portugal. You need a NIF tax number before signing anything, a promissory contract with a mortgage get-out clause, and roughly 9.5% on top of the price if you are not yet a Portuguese tax resident.
I walk buyers through this most weeks, and the same two things catch people out. The purchase tax is not the number most guides quote, and the annual fee everyone is told they must pay is one most buyers can avoid in ten minutes. Here is the sequence, in the order it actually happens.
What do I need to know before buying a house in Lagos, Portugal as a foreigner?
You do not need residency, a visa, or a Portuguese company. You need a tax number, a bank route for the money, and a lawyer working for you rather than for the transaction. From first viewing to keys, it runs like this.
- Get a NIF, your Portuguese tax number. Nothing moves without it.
- Open a Portuguese bank account, or confirm your bank can send euros to a notary on the day.
- Appoint an independent lawyer, before you make an offer rather than after.
- Make your offer, and agree the deposit and the deed deadline in writing.
- Sign the CPCV, the promissory contract, and pay the deposit.
- Run the searches and, if you are borrowing, get the mortgage to formal approval.
- Pay IMT and stamp duty, then sign the escritura, the public deed.
- Register the purchase, and deal with your notification channel within fifteen days.
Budget three to four months from accepted offer to keys if you are borrowing, and six to eight weeks if you are paying cash. The deed deadline you write into the contract at step five is the one date that really governs the pace.
Your NIF, and the annual fee most buyers do not actually owe
The NIF is a nine digit tax number from the Autoridade Tributária. It is free at a tax office, issued the same day, and you can get one without living here. You will need it to open a bank account, sign a contract, and put the utilities in your name.
Then comes the part I spend the most time correcting. If you are tax resident outside the EU or the EEA, which since Brexit includes the United Kingdom, and also the United States, Canada and Switzerland, Portuguese law requires you to give the tax office a way to reach you. Article 19 of the Lei Geral Tributária puts that duty on taxable persons resident abroad, and owning a property here is enough to trigger it. For EU and EEA residents, so Dutch, German, Irish and French buyers, appointing a representative is optional.
What you will read almost everywhere is that this means hiring a fiscal representative at 150 to 400 euros a year, for as long as you own the place. One Algarve agency’s own 2026 guide calls representation mandatory for UK and US residents and quotes that range. It is not the whole picture, and the gap is worth real money.
Since July 2022, paragraph 15 of that same article says the obligation to appoint a representative does not apply to taxpayers who sign up to one of the tax authority’s electronic notification channels. The tax authority spelled out how in Ofício-Circulado 90057 of 20 July 2022: log in to the Portal das Finanças, go to A minha Área, then Notificações e Citações, then Gerir canais, then Canais de Notificação, and activate either Portal das Finanças or Via CTT. That is it. The wording in the statute is that the obligation “não é aplicável”, does not apply, so this is not a waiver you apply for and wait on. It is a choice you make.
Three practical points nobody mentions. You have fifteen days from buying the property to do either the appointment or the sign up. If you are outside the EU and later switch the electronic channel off, that only takes effect once you have appointed a representative, so you cannot simply drop out. And if you do neither, the fine runs from 75 to 7,500 euros, and until it is fixed you lose the right to complain, appeal or challenge anything the tax office does to you.
To be straight about the limits: the consolidated text I am working from is current to March 2025, and article 19 has not been amended since 2022. I am an agent, not your tax adviser, so have your accountant confirm it for your circumstances. A representative is still the easier answer for some people, particularly if you would rather someone Portuguese opened the post. Just choose it because you want it, not because you were told you had no choice.
Opening a Portuguese bank account
You do not strictly need a Portuguese account to buy, but it makes everything easier: the deed payment, the utilities, the annual property tax, and the mortgage if you have one. Take your passport, your NIF, proof of address and proof of income. American buyers should ask about FATCA reporting before choosing a bank, because some branches handle US clients routinely and others will stall you for weeks.
The promissory contract is where the money gets serious
The CPCV, contrato promessa de compra e venda, is not legally required, but almost every purchase here uses one, and it is where your money stops being refundable. The deposit normally runs between 10% and 20% of the price. On a 500,000 euro Lagos apartment that is 50,000 to 100,000 euros committed months before you own anything.
The protection is symmetrical, which buyers often do not realise. If you pull out without cause you lose the deposit. If the seller pulls out, article 442 of the Civil Code makes them return it doubled. There is also a stronger remedy in article 830, execução específica, where instead of taking the money you ask the court to compel the sale. It is slower, but it is the only route that gets you the house rather than damages, and it only works if your contract does not expressly exclude it. Check that clause.
The clause I will not let a buyer sign without is the condição resolutiva, the one that returns your deposit if your mortgage is refused. Without it, a bank declining your loan is your problem and your deposit is gone. That is the single most expensive omission in Portuguese conveyancing and it is one line of text.
What buying actually costs in 2026
IMT, the transfer tax, is the big one, and the rate depends on whether you are already a Portuguese tax resident when you sign. Decreto-Lei 97/2026 put a flat 7.5% on residential property bought by anyone who is not tax resident here, with no progressive scale and no exemptions. It replaces the sliding scale rather than sitting on top of it, and it turns on tax residence, not your passport, so a Dutch non-resident is treated exactly like an American one. I went through the arithmetic and the start date in detail in my piece on why there was never a 1 September IMT deadline.
Here is the same 500,000 euro purchase both ways.
| Cost on a 500,000 euro home | Not yet tax resident | Already tax resident |
|---|---|---|
| IMT | 37,500 (flat 7.5%) | 27,300 (progressive scale) |
| Stamp duty at 0.8% | 4,000 | 4,000 |
| Notary and registration | 1,200 | 1,200 |
| Legal fees at roughly 1% | 5,000 | 5,000 |
| Total | 47,700, or 9.5% of price | 37,500, or 7.5% of price |
The 10,200 euro difference is not necessarily lost. The flat rate behaves more like a refundable deposit: apply to the tax office and they can cancel the difference if you become Portuguese tax resident within two years of the escritura, or if you let the property long term at 2,300 euros a month or less, with the contract signed within six months and the property let for at least 36 months across the first five years. Both need planning before you sign, not after. If you are weighing what your own place is worth against these numbers, you can get a free valuation from me in 48 hours.
Then there is the annual side. IMI, the municipal property tax, is billed the year after you buy and is calculated on the property’s rateable value rather than what you paid, which is usually a pleasant surprise. Condominium charges and insurance sit alongside it.
Financing as a non-resident
Non-resident mortgages are a standard product at Portuguese banks. EU nationals commonly reach 60% to 70% loan to value as non-residents, while UK, US and other non-EU buyers more typically sit at 60% to 65%. Treat those as planning figures rather than a quote, and remember the loan is sized against the bank’s own valuation, not your agreed price, which matters in a market where Algarve valuations have been climbing. Budget six to eight weeks from a complete application to formal approval, and start the bank conversation before you have an accepted offer. I covered the documentation and the rate picture in my guide to non-resident mortgages.
The escritura, and the fifteen days after it
The escritura is the public deed, signed at a notary, a conservatória, or increasingly through Casa Pronta, which handles the deed and the registrations at one counter on the same day. Buyer and seller attend, or their attorneys, plus the bank if there is a mortgage. IMT and stamp duty are paid before you sign, and the balance is normally handed over as a bank cheque at the table.
Afterwards the purchase is registered at the Conservatória do Registo Predial, which is what makes you owner as against the rest of the world, and the ownership record at Finanças is updated so the IMI bill finds you. Casa Pronta does this on the day. Otherwise allow up to fifteen days. That is also your window for the notification channel or the representative, so put both on the same reminder.
Frequently Asked Questions
What do I need to know before buying a house in Lagos, Portugal as a foreigner?
There is no restriction on foreigners buying in Portugal, and you do not need residency or a visa. You do need a NIF tax number before you sign anything, a promissory contract with a mortgage get-out clause, and a realistic view of costs. Budget around 9.5% on top of the price if you are not yet a Portuguese tax resident.
Do I need a fiscal representative to buy property in Portugal?
If you are tax resident outside the EU or EEA, including the UK and the US, you must give the tax office a way to reach you, and owning a Portuguese property triggers that duty. But appointing a paid representative is only one way to satisfy it. Article 19 of the Lei Geral Tributária says the obligation does not apply if you sign up to electronic notifications on the Portal das Finanças or via Via CTT, which is free and takes minutes. EU and EEA residents are not required to appoint anyone.
How much does it cost to buy a house in Portugal on top of the price?
On a 500,000 euro home in Lagos, expect roughly 47,700 euros if you are not yet a Portuguese tax resident, which is about 9.5% of the price. That is 37,500 IMT at the flat non-resident rate, 4,000 stamp duty at 0.8%, about 1,200 for notary and registration, and around 5,000 in legal fees. An existing Portuguese tax resident pays the progressive IMT scale instead and lands nearer 37,500 in total.
Can I get the 7.5% non-resident IMT back?
Often, yes. The tax office can cancel the difference between the flat rate and the normal rates if you become Portuguese tax resident within two years of the deed, or if you let the property long term at 2,300 euros a month or less, with the contract signed within six months of purchase and the property let for at least 36 months in the first five years. Both routes need setting up before you sign, not afterwards.
How long does it take to buy a house in Portugal?
Six to eight weeks if you are paying cash, and three to four months if you need a mortgage, with the deed usually falling 30 to 90 days after the promissory contract depending on what you negotiate. The mortgage is the variable: allow six to eight weeks from a complete application to formal approval, and start that conversation before you make an offer.
Ready to start your Algarve property search? Tell me what you are looking for and I will send you what actually fits, not everything on the market.
