IMI Portugal 2026: Annual Property Tax for Expats [Guide]

IMI is Portugal’s annual municipal property tax, paid every year by whoever owns a property on December 31, based on the VPT (tax-assessed value) rather than the purchase price. Urban buildings are taxed at 0.3%-0.45%, set yearly by each município, and rural land at a fixed 0.8%. Payment falls in one, two, or three instalments depending on the amount owed, from May through November. A temporary exemption exists for a modest permanent home, and a separate additional tax, AIMI, applies to individuals whose combined residential property and building land exceeds €600,000 in VPT. Purchase-time taxes such as IMT and stamp duty are covered separately.

If you own or are about to buy a home in Portugal, IMI is the bill that shows up every year for as long as you hold the property, not just once at closing. It is usually modest compared to property taxes in the US or UK, but the rules on VPT, exemptions and the AIMI surcharge catch many new owners off guard. This guide covers what you owe, when, and how to avoid overpaying. At roughly $1.16 per euro (September 2026), a €600 IMI bill runs about $696.

What Is IMI and Who Has to Pay It?

IMI (Imposto Municipal sobre Imóveis) is the annual tax every property owner in Portugal pays to their local município, based on the property’s VPT rather than what it sold for. Whoever is registered as the owner on December 31 of a given year is liable for that year’s IMI, even if they sell the property the following January.

The VPT (valor patrimonial tributário) is a tax-assessed value calculated by the Autoridade Tributária using a formula that weighs location, construction cost, age, and other factors. It is frequently lower than market price, sometimes by a wide margin, though not always. IMI is calculated on this number, so check it instead of assuming it tracks what you paid.

IMI is unrelated to the taxes you pay when you buy the property. IMT (Imposto Municipal sobre Transmissões) and stamp duty (Imposto do Selo) are one-time transfer taxes charged at the moment of purchase, on a different sliding scale, and the guide to buying property in Portugal as a foreigner covers them in detail. IMI is the separate, recurring bill that follows for as long as you own the home.

How Much Is IMI in Portugal? Rates by Property Type

Urban buildings are taxed at 0.3% to 0.45% of VPT, with the exact rate set annually by each município within that band; rural land is taxed at a fixed 0.8%. This is set out in article 112 of the Código do IMI (CIMI).

Because each município sets its own rate, two identical VPTs in different towns can produce different bills. Many municípios apply the legal minimum of 0.3% to stay competitive, while others sit closer to the 0.45% ceiling. Your municipal chamber publishes the rate in force for the year, and it can change annually, so last year’s number may be out of date.

Worked example: a home with a VPT of €150,000 in a município that applies the minimum urban rate of 0.3% owes €450 a year in IMI. The same home in a município at the 0.45% ceiling would owe €675 a year instead. Both figures are illustrative; confirm the rate your município has set for the current year before budgeting.

Two aggravated rates exist under the same article. Municípios may triple the standard rate on urban buildings that have sat vacant for more than a year or are in a state of ruin, unless the condition is due to a natural disaster. Separately, a 7.5% rate applies to property owned by entities domiciled in a blacklisted tax jurisdiction, but only to legal entities (companies), so a private homeowner is not affected.

When and How Do You Pay IMI?

IMI is paid in one, two, or three instalments depending on the total amount owed for the year, under article 120 of the CIMI. A bill of €100 or less is paid in a single instalment in May. Between €100 and €500 it splits into two instalments, in May and November. Above €500 it splits into three, in May, August and November.

Annual IMI Amount	Instalments	Payment Months
Up to €100	1	May
Over €100 up to €500	2	May, November
Over €500	3	May, August, November

The Autoridade Tributária calculates the amount and issues a notice; there is no separate IMI return, unlike income tax. Payment can be made through the Portal das Finanças, by Multibanco reference, or via direct debit if you’ve set that up. Under the same article, missing one instalment makes all the remaining ones due immediately, so set a calendar reminder.

Can You Get an Exemption From IMI?

Yes, if the property becomes your permanent home and both your VPT and household income stay under set caps, under article 46 of the Estatuto dos Benefícios Fiscais (EBF). The property’s VPT must not exceed €125,000, and your household’s gross annual income in the prior year must not exceed €153,300. Where both conditions are met, the exemption runs for three years, and municípios can extend it by up to two more.

For a home acquired through an onerous transfer (a normal purchase), the exemption is applied automatically by the tax authority based on the information it already holds. The home must actually become your permanent residence within six months of buying it or finishing its construction. In other cases, such as a home you built, you must request the exemption yourself within the 60 days after that six-month window closes.

The exemption targets lower-value, owner-occupied homes, so most higher-priced purchases in Lisbon, Porto or the Algarve coast will not qualify given the €125,000 VPT ceiling. Check anyway, since VPT often comes in well below market price.

What Is IMI Familiar and Does It Apply to You?

IMI Familiar is an optional discount some municípios apply for households with dependent children, under article 112-A of the CIMI. Where a município has opted in by municipal assembly deliberation, the fixed annual reduction is €30 for one dependant, €70 for two, and €140 for three or more, applied to the IMI due on the family’s permanent home.

The discount exists only if your município has adopted it, and not all have. Check with your câmara municipal or its municipal rates notice to see whether IMI Familiar is in effect.

What Is AIMI and Who Has to Pay It?

AIMI (Adicional ao Imposto Municipal sobre Imóveis) is a separate additional tax charged once a year on the combined VPT of an individual’s residential property and building land above a set threshold. For individual owners, a deduction of €600,000 is applied to the total VPT before the tax is calculated; that deduction doubles to €1,200,000 for married couples or couples in a civil partnership who opt for joint taxation.

Rates are progressive on the value above the deduction: 0.7% up to €1,000,000, 1% on the portion between €1,000,000 and €2,000,000, and 1.5% above that. AIMI is assessed by the tax authority and paid in a single instalment between September 1 and September 30.

Worked example: an individual owner with €900,000 in combined residential VPT subtracts the €600,000 deduction, leaving €300,000 taxed at 0.7%, about €2,100 in AIMI for the year, on top of the ordinary IMI paid on each property.

Unlike the article 46 exemption on regular IMI, official guidance on AIMI does not describe a carve-out for a primary residence. Most homeowners are shielded by the size of the deduction, not by how the property is used, and very few individual owners cross €600,000 in combined residential VPT. Tax law here moves fast, so confirm your exposure with a contabilista if your holdings are near the threshold.

How Do You Check Your VPT and IMI Bill?

You can view your property’s VPT, tax details, and payment status through the caderneta predial on the Portal das Finanças, under your registered properties. If you believe the VPT is out of date or too high relative to comparable properties, you can request a new assessment through the same portal. It is a formal administrative process whose outcome depends on details the tax authority weighs individually, so have a contabilista or solicitor review your case before filing.

If you’re not a tax resident of Portugal, note that Decree-Law 44/2022 removed the general requirement to appoint a fiscal representative, as long as you opt into electronic notifications through the Portal das Finanças or the ViaCTT electronic mailbox instead. A fiscal representative is still mandatory if you carry out VAT-liable self-employed activity in the country. Setting up your NIF correctly from the start makes managing all of this, including IMI, easier.

How Does IMI Fit Into Your Overall Portugal Tax Picture?

IMI is one recurring cost among several once you own property here, alongside income tax on any rental earnings and, for some owners, AIMI. If you are still deciding whether to buy, renting versus buying in Portugal compares IMI and the other ongoing costs of ownership against renting. For the broader tax picture, from income tax to social security, see Portugal’s tax system for expats.

Property tax rules change regularly in Portugal, through annual municipal rate-setting or budget law amendments. Treat the figures here as the 2026 baseline and check your municipal notice or a contabilista each year.