Property taxes in Portugal: what you pay once, and what you pay every year

What you pay once: the cost of buying

Two taxes fall due at the moment of purchase, both payable before the deed is signed. Your lawyer or the notary will normally confirm payment as a condition of proceeding.

IMT — the transfer tax

The Imposto Municipal sobre as Transmissões Onerosas de Imóveis is the main purchase tax. It is charged on the higher of the purchase price or the property's official rateable value, and it is progressive — calculated in bands, not as a single percentage.

The rate depends on what the property is for, and this is where non-resident buyers are often caught out. Portugal applies one set of rates to a property bought as a permanent own home, and a different, less favorable set to a second home or a property bought to let. A holiday house on the Silver Coast is taxed as a second home even if you intend to move into it eventually. The exemptions at the lower end, including the relief for younger buyers, attach to permanent residence and do not reach a non-resident buying a second property.

Because the bands are revised each year, any figure you read online has a shelf life. What does not change is the structure: check the rate for your intended use, not the headline rate.

Stamp duty on the purchase

Separately, stamp duty of 0.8% is charged on the same value. There are no bands and no exemptions; it applies to every purchase. If you are borrowing, the mortgage attracts stamp duty of its own.

Add notary and registry costs, and legal fees, and the realistic allowance on top of the price is meaningful. It should sit in your budget from the beginning, not appear as a surprise a week before the deed.

What you pay every year: IMI

The Imposto Municipal sobre Imóveis is Portugal's annual property tax, the closest equivalent to American property tax. It is charged on the property's rateable value — the valor patrimonial tributário, or VPT — which is set by the tax authority using a statutory formula, and which is usually well below market price.

For urban residential property the rate is between 0.3% and 0.45%, and here is the part worth pausing on: each municipality sets its own rate within that range, every year. Two houses of identical value in neighboring councils can carry noticeably different annual bills. If you are weighing one area against another, the local IMI rate is a real and permanent difference, and it is public information you can check before you choose.

IMI is billed in arrears for the previous year and is payable in one, two or three installments depending on the amount. The notices are sent by the tax authority — which is precisely why the arrangement described in our guide on fiscal representation matters so much. A notice that arrives at an address nobody is watching still starts a deadline.

AIMI: the surcharge on larger holdings

Above IMI sits the Adicional ao IMI, a national surcharge aimed at larger property portfolios rather than at ordinary homeowners.

It works by adding together the rateable values of all the urban properties you own in Portugal. For individuals and undivided estates, a deduction of €600,000 is applied to that total, and the surcharge falls only on what remains — at rates that run from 0.7% upward, rising in bands for larger holdings.

In practice, a single home of ordinary value falls below the threshold and AIMI never arises. It becomes relevant if you buy more than one property, or one of substantial value. It is also assessed per taxpayer, so how a purchase is held — individually, jointly, or through a company — affects the outcome. That is a decision better taken before the deed than after it.

If you let the property

Rental income from a Portuguese property is Portuguese-source income and is taxable in Portugal whether or not you live here. Non-residents are taxed on that income at a flat rate, with deductible expenses limited to defined categories. Short-term tourist letting is a separate regime again, with its own registration requirements and, in some municipalities, restrictions on new licenses.

Our guide on buying to rent in Portugal as a US investor covers that ground. The point to carry from here is simply that letting changes both your Portuguese filing obligations and your American ones, and that the two should be planned together rather than discovered separately.

Where the American side begins

Everything above is Portuguese tax. None of it removes your obligations in the United States, where citizens are taxed on worldwide income regardless of residence. The US–Portugal treaty and the foreign tax credit exist to prevent the same income being taxed twice in substance, but they operate through your American return, not instead of it.

We set out the Portuguese position clearly enough for your US accountant to work with. Our guide on taxes for Americans living in Portugal explains where that line falls and why it protects you to keep it clear.

What we do

Before a purchase, we establish which IMT rate applies to the transaction as you intend to use the property, confirm the rateable value and the IMI position, and identify whether AIMI is in play given what you already own. We act as fiscal representative for non-resident owners, which means the annual notices reach someone who reads them and can act within the deadline.

Where a purchase is in prospect, our guide on buying property in Portugal as a US citizen sets out the legal steps in order.

Frequently asked questions

Does Portugal have an annual property tax like the United States?

Yes. It is called IMI and is charged annually on the property's official rateable value, at a rate between 0.3% and 0.45% for urban residential property, set by each municipality. The rateable value is normally well below market price.

Do non-residents pay higher property taxes in Portugal?

IMI and AIMI do not depend on the owner's residence. What does depend on it is IMT at the point of purchase: the lower rates and exemptions attach to a permanent own home, so a non-resident buying a second home is generally taxed on the less favorable scale.

How much should I budget on top of the purchase price?

IMT, stamp duty of 0.8%, notary and registry costs and legal fees. IMT varies with price and intended use, so the total is best calculated for the specific property rather than estimated from a percentage.

What is AIMI and will I have to pay it?

AIMI is a national surcharge on the combined rateable value of urban property held by the same taxpayer, with a deduction of 600,000 euros for individuals and undivided estates. A single home of ordinary value falls below the threshold. It becomes relevant with multiple properties or one of substantial value.

Who receives the annual IMI notice if I live in the United States?

The tax authority sends it to the fiscal representative appointed for the taxpayer. Once sent to the representative, the notification is treated as delivered, and the payment deadline runs from that point.

Are IMI rates the same everywhere in Portugal?

No. Each municipality sets its own rate each year within the statutory range. Identical properties in adjoining municipalities can carry different annual bills, so the local rate is worth checking before choosing an area.