Property Tax Overview in Portugal

Portugal's property tax framework is built around four distinct levies, each administered by the Autoridade Tributaria e Aduaneira (AT) through the Portal das Financas at portaldasfinancas.gov.pt. Understanding the interaction between the annual holding tax (IMI), the purchase-stage transfer tax (IMT), the wealth surcharge (AIMI), and stamp duty is essential before completing any Portuguese property transaction. The rules changed materially in 2026 for non-resident buyers, making pre-purchase structuring conversations with a qualified Portuguese tax professional especially important.

What is IMI and how is it calculated each year?

IMI (Imposto Municipal sobre Imoveis) is Portugal's annual municipal property tax, governed by the Codigo do IMI (CIMI), Article 112 [1]. Each municipality sets its own rate within the statutory band: 0.3% to 0.45% for urban properties (predio urbano) and a fixed 0.8% for rural properties (predio rustico) nationwide [1]. The tax base is the Valor Patrimonial Tributario (VPT) -- the official tax-assessed value maintained by the AT, which accounts for location, area, property age, quality, and use, rather than market value [2]. In 2026, the reference construction cost per square metre used in VPT calculations rose to EUR 712.50, reflecting a 25% uplift above the EUR 570 average construction cost, which updated VPT assessments across many municipalities for the first time in three years.

IMI is assessed as of 1 January each year and payment notes are issued by 30 April. Payment instalments follow the annual liability: up to EUR 100 (single payment, 31 May); EUR 100-500 (two instalments, 31 May and 30 November); over EUR 500 (three instalments, 31 May, 31 August, and 30 November) [3]. Families with dependants benefit from per-child IMI deductions set by each municipality (EUR 30, EUR 70, or EUR 140 for one, two, or three children respectively) [2]. Properties owned through entities domiciled in listed tax-haven jurisdictions face a punitive 7.5% IMI rate under CIMI Article 112(4) [1].

How does IMT apply when buying Portuguese property?

IMT (Imposto Municipal sobre as Transmissoes Onerosas de Imoveis) is a one-time transfer tax due at the moment of deed-signing, calculated on the higher of the declared purchase price or the VPT [4]. Unlike IMI, IMT is a national tax with rates set by the Codigo do IMT (CIMT) and updated annually. The 2026 brackets for primary residences on mainland Portugal apply progressive marginal rates on rising value tranches [4][5]:

Rural land (predio rustico) is taxed at a flat 5%; commercial properties and building plots at 6.5%. Properties purchased by entities in listed tax-haven jurisdictions face a flat 10% IMT. The Azores and Madeira apply thresholds 25% higher than the mainland figures above.

A notable 2026 reform under the Construir Portugal legislative package approved by Parliament in February 2026: non-resident buyers of residential property now pay a flat 7.5% IMT regardless of value [5]. Three escape routes exist: (1) establishing Portuguese tax residency within 24 months of purchase; (2) placing the property on the long-term rental market within 6 months at rents up to EUR 2,300 per month and maintaining the tenancy for at least 36 months within 5 years; or (3) purchasing a first-sale renovated property in a designated Urban Rehabilitation Area (ARU) [5]. Buyers who subsequently satisfy one of these conditions may apply to the AT for a refund of the difference between the flat 7.5% paid and the lower progressive rate that would otherwise have applied.

What is AIMI and when does it apply?

AIMI (Adicional ao Imposto Municipal sobre Imoveis) is a supplementary property wealth tax introduced by Law 42/2016 and governed by CIMI Articles 135-A to 135-J [6]. It applies to individuals or companies whose combined Portuguese residential property VPT, measured on 1 January each year, exceeds the relevant threshold. For individuals the personal deduction is EUR 600,000 (EUR 1,200,000 for married couples or civil partners making a joint taxation election). Above the threshold, AIMI is levied on a tiered marginal basis:

• 0.7% on VPT between EUR 600,000 and EUR 1,000,000
• 1.0% on VPT between EUR 1,000,000 and EUR 2,000,000
• 1.5% on VPT exceeding EUR 2,000,000

For legal entities (companies) there is no personal deduction; a flat 0.4% applies to the entire residential and building-land VPT held by the company [6]. Entities domiciled in listed tax-haven jurisdictions pay 7.5%. The AT issues AIMI notices by end of August each year, with payment due by end of September. Properties already exempt from IMI, social-housing cooperative buildings, and condominium-owned elements each valued below 20 times the annual social support index are excluded from the AIMI base [6].

What stamp duty applies on a Portuguese property purchase?

Stamp duty (Imposto do Selo) at a flat rate of 0.8% is charged on the purchase deed alongside IMT and is calculated on the higher of the purchase price or VPT [5]. It is payable on the same day as IMT, before the public notarial deed is executed. For mortgage financing, a separate stamp duty applies to the loan instrument: 0.5% on mortgages with a term of five years or less, and 0.6% on those exceeding five years. There is no stamp duty on gifts or inheritance transfers to direct-line relatives (spouse, children, parents) in Portugal -- only an autonomous stamp duty of 0.8% on the underlying property value applies; third-party donees and heirs pay an additional 10% stamp duty on top.

What is the non-resident position on Portuguese property taxes?

Non-resident owners (individuals with no Portuguese tax domicile) pay IMI at the same rates as residents -- 0.3%-0.45% urban or 0.8% rural of VPT -- with no surcharge for non-residency on the annual holding tax [7]. Non-EU/EEA individuals who own property or receive rental income in Portugal must appoint a fiscal representative (representante fiscal) registered with the AT; failure to do so results in correspondence going unanswered and potential default assessments.

For AIMI, non-residents who hold Portuguese residential property in personal names with aggregate VPT exceeding EUR 600,000 are within scope. Non-resident rental income is taxed at a flat 25% rate on net Portuguese-source income (25% for short-term lets at market rents; 5% for affordable/supported rents under qualifying contracts) and must be declared on an annual Portuguese IRS return. Capital gains on the sale of Portuguese real estate by non-residents are taxed on the full gain (unlike the 50% inclusion available to residents) at a flat 28% rate; EU/EEA residents may elect resident treatment to access the 50% inclusion and progressive scale [7].

See the Portugal country overview for a summary of residency thresholds, tax treaty positions, and personal income tax rates. The interaction between IMT, AIMI, and income tax on rental yields is fact-specific; a qualified Portuguese tax professional (contabilista certificado or advogado-tributarista) registered with the Ordem dos Contabilistas Certificados or the Ordem dos Advogados can review the full picture for a specific purchase.