Portugal Property Tax for Foreign Owners: IMI, IMT, AIMI Explained for 2026

Portugal's property tax structure for foreign owners has three pillars: IMT at purchase, IMI annually, and AIMI above wealth thresholds. Add stamp duty on the transaction and rental and capital gains tax on income or sale. The 2026 reforms made the system flatter for non-residents on the transfer side and reinforced the AIMI wealth tax on the holding side.

This is a working guide to what you actually pay, when, at what rate, and what the 2026 changes did to the calculation.

The Tax Stack at a Glance

For a non-resident buying, holding, renting, and eventually selling residential property in Portugal, five taxes matter:

- IMT (Imposto Municipal sobre Transmissões Onerosas de Imóveis): transfer tax, paid once at purchase

- Stamp Duty (Imposto do Selo): paid once at purchase

- IMI (Imposto Municipal sobre Imóveis): annual municipal property tax

- AIMI (Adicional ao Imposto Municipal sobre Imóveis): annual wealth surcharge above thresholds

- Income and Capital Gains Tax: on rental income and on sale

There is no annual federal property tax in Portugal beyond IMI and AIMI.

IMT: The 2026 Flat Rate for Non-Residents

IMT is the largest single tax on a Portuguese property transaction. It is paid by the buyer before signing the deed.

Until 2025, IMT for residential property used a tiered structure with brackets and marginal rates that started at 1 percent and stepped up to 7.5 percent or 8 percent depending on property value and whether the property was a primary residence.

In 2026, the rules changed for non-resident buyers. Non-residents now pay a flat 7.5 percent IMT on the purchase price (or VPT, whichever is higher). The tiered structure was replaced with a single rate.

For Portuguese resident buyers purchasing a primary residence, the tiered structure still applies, with rates of 0 percent on the first €101,917 (2026 threshold), stepping up through 2 percent, 5 percent, 7 percent, and capping at 7.5 percent for properties above approximately €1 million.

What this means for a foreign buyer: a €400,000 apartment purchase incurs €30,000 in IMT (7.5 percent flat). The same €400,000 purchase by a Portuguese tax resident buying a primary residence would pay a much lower effective rate, often around €15,000 to €18,000 depending on the exact bracket calculation.

The IMT is calculated on the higher of the declared purchase price or the VPT (Valor Patrimonial Tributário), the tax authority's assessed value. Most transactions are calculated on the purchase price because it exceeds the VPT, but the rule prevents under-declaration.

Rural properties (land, agricultural property) are taxed at 5 percent.

Acquisitions through certain corporate structures, including companies based in jurisdictions on Portugal's blacklist of tax havens, pay 10 percent.

Stamp Duty (Imposto do Selo)

A flat 0.8 percent stamp duty applies on the purchase price (or VPT, whichever is higher). This is paid alongside IMT at the moment of the deed. There is no reduced rate for primary residence buyers, no foreign-resident surcharge, and no exemption.

For a €400,000 purchase, stamp duty is €3,200.

Stamp duty also applies separately on mortgages registered against Portuguese property at 0.6 percent of the loan amount.

IMI: Annual Property Tax

IMI is the annual municipal property tax, calculated on the VPT (tax authority's assessed value) rather than the market price. The VPT is typically 80 to 90 percent of market value, and is reassessed by the tax authority periodically.

Urban property: 0.3 to 0.45 percent annually, with the exact rate set by each municipality within the legal range.

Rural property: 0.8 percent annually.

There is no foreign-ownership surcharge. Non-residents pay the same IMI as residents.

A €400,000 apartment with a VPT of €320,000 in a Lisbon municipality at 0.3 percent incurs €960 in annual IMI. The same property in a municipality charging 0.45 percent incurs €1,440.

IMI is paid in three instalments (May, August, and November) if the total exceeds €500, or in a single payment if below that threshold.

Properties owned by entities based in blacklisted tax haven jurisdictions pay IMI at 7.5 percent annually. This is a substantial penalty rate designed to discourage holding Portuguese residential property through offshore corporate structures.

AIMI: The Wealth Surcharge

AIMI applies to property owners whose total Portuguese property VPT exceeds the threshold. It is the closest thing Portugal has to a wealth tax on residential property.

Individual owners (single or filing separately): exemption of €600,000. AIMI applies to the excess.

Married couples filing jointly: exemption of €1.2 million. AIMI applies to the excess.

Rates on the excess:

- 0.7 percent on the portion between the exemption and €1 million above the exemption

- 1 percent on the portion between €1 million and €2 million above the exemption

- 1.5 percent on the portion above €2 million above the exemption

For an individual with a Portuguese property portfolio of €1 million VPT, AIMI applies to €400,000 (€1 million minus €600,000 exemption) at 0.7 percent, producing €2,800 annually.

Properties held through corporate structures pay AIMI on the full VPT with no exemption threshold. The rate is 0.4 percent for most corporate holders and 7.5 percent for entities in blacklisted jurisdictions.

This is a deliberate policy to discourage holding Portuguese residential property through corporate structures. A foreign buyer using a Maltese or BVI holding company will face AIMI from the first euro of VPT.

Rental Income Tax

Rental income from Portuguese property is taxable in Portugal regardless of where the owner is tax resident. Non-residents have two options.

Option one: flat 28 percent withholding tax on net rental income (gross rent minus allowable expenses including IMI, maintenance, insurance, mortgage interest, and management fees). Most non-resident landlords use this option.

Option two: opt into Portuguese resident-style progressive taxation, which can be advantageous for low-income property owners but is rarely better than the 28 percent flat rate for higher rental income.

EU residents have a third option: tax at progressive rates as if Portuguese-resident, declared on a Portuguese annual return.

Short-term rentals (Alojamento Local) are taxed under a separate regime with simplified categorisation. Under the simplified regime, 35 percent of gross rental income is treated as taxable (the other 65 percent is deemed deductible expenses), and the resulting figure is taxed at 28 percent. The effective tax on short-term rental income runs around 9.8 percent of gross.

Capital Gains Tax on Sale

Non-residents selling Portuguese property pay capital gains tax on 100 percent of the gain (sale price minus purchase price minus allowable acquisition costs and improvements with proper invoices).

The flat rate for non-residents is 28 percent.

For EU and EEA residents, an election is available to be taxed on 50 percent of the gain at progressive rates, which is often more favourable.

Portuguese tax residents are taxed on 50 percent of the gain at progressive rates by default, which produces lower effective rates than the non-resident 28 percent flat rate in most cases.

There is no holding period exemption for non-residents. Property held for 30 years and sold is taxed the same way as property held for 30 days.

Reinvestment relief for selling a primary residence and reinvesting in another EU primary residence within 36 months is available to Portuguese tax residents but not to non-residents.

A Worked Example: €400,000 Lisbon Apartment, Non-Resident Buyer

Purchase costs:

- Purchase price: €400,000

- IMT (7.5 percent flat for non-residents): €30,000

- Stamp Duty (0.8 percent): €3,200

- Notary, registration, legal fees: approximately €4,000 to €6,000

Total acquisition cost: approximately €437,000 to €439,200.

Annual carrying costs assuming VPT of €320,000:

- IMI at 0.3 percent: €960

- AIMI (if no other Portuguese property and VPT below €600,000): €0

If the same buyer holds €1.2 million of Portuguese property as a single individual:

- AIMI on the excess (€600,000) at 0.7 percent: €4,200

Sale after 5 years at €500,000:

- Capital gain: €100,000 minus allowable improvements with proper invoices

- Capital gains tax for non-resident (28 percent flat on full gain): €28,000

This is before any rental income tax during the hold period.

The 2026 Changes in Plain Terms

Three things changed for foreign property owners under the 2026 reforms.

The IMT structure became simpler for non-residents but generally more expensive. A flat 7.5 percent rate replaces the tiered structure that previously allowed lower rates on smaller properties.

The AIMI wealth surcharge thresholds were maintained but enforcement was tightened. Tax authorities have improved data sharing on beneficial ownership of Portuguese property held through foreign structures.

Short-term rental licensing in central Lisbon, Porto, and other urban parishes remains highly restricted. New AL licences in most central parishes have stopped. Properties with existing AL licences attached carry transferable value, and the tax structure on existing AL operations remained largely unchanged.

Common Mistakes That Cost Money

Buying through an offshore company without understanding the AIMI and IMI penalty rates. A Maltese or BVI holding structure pays IMI at 7.5 percent annually and AIMI on the full VPT with no exemption. This is rarely worth the corporate confidentiality benefit for residential property.

Failing to claim allowable expenses against rental income. The 28 percent non-resident rate applies to net income after deductions, not gross income. IMI, maintenance, insurance, mortgage interest, condominium fees, and management fees all reduce the tax base.

Not retaining receipts for improvements during the hold period. Capital gains calculations allow improvements to add to the cost basis only if supported by invoices. Renovations without proper invoicing do not reduce the gain at sale.

Assuming the AL (short-term rental) licence transfers automatically with the property. AL licences are property-specific and require active management to remain valid. A licensed property can lose its AL status if the new owner does not maintain operations.

Underestimating the cost of selling. The 28 percent capital gains rate on the full gain for non-residents is steep. Holding period planning, improvement documentation, and primary-residence reinvestment strategies for those who become Portuguese tax residents materially affect net proceeds.

Platforms like Bektu cross-reference developer track records and project documentation against Portuguese property registry data, which helps verify that the property and its history support the tax treatment a buyer is relying on.

Bottom Line

Portugal's property tax structure for foreign owners is moderate at the holding stage and front-loaded at the purchase and sale stages. The 7.5 percent flat IMT for non-residents and the 28 percent capital gains rate are the two largest line items in most foreign-buyer transactions. AIMI matters only above the €600,000 individual or €1.2 million joint VPT thresholds, but penalises corporate ownership heavily.

Plan for the IMT at purchase, document allowable expenses during the hold, and structure the sale with capital gains exposure in mind. Most surprises for foreign owners come from missing one of those three steps, not from the rates themselves.