Anyone who owns residential property in Portugal — resident or not — owes Portugal’s annual municipal property tax, Imposto Municipal sobre Imóveis (IMI), calculated on the property’s official tax value (Valor Patrimonial Tributário, VPT) rather than its market price. According to portugalrealestatelawyer.com’s October 2026 rate guide, urban property is taxed at a rate each municipality sets within a 0.3%–0.45% band, while rural property is taxed at a flat 0.8%.
Above a certain combined VPT across all the properties an individual owns in Portugal, a separate additional tax — Adicional ao IMI (AIMI) — applies on top of standard IMI. Portugal Pathways describes AIMI as a wealth-style surcharge aimed at higher-value holdings rather than ordinary homes, with commercial buildings, offices and working farmland excluded from it entirely.
Payment is typically split into installments through the year for larger bills, with smaller bills paid in a single instalment; exact split dates and thresholds can shift from year to year, so the safest way to confirm this year’s actual due dates and your property’s current VPT is the Portal das Finanças (financas.gov.pt), Portugal’s official tax authority portal, where non-resident owners can also pay online once they have a Portuguese tax number (NIF).
A new buyer may qualify for a temporary IMI exemption on a property bought as a primary residence, but it generally has to be actively requested within a set window after the purchase or construction completes — it is not applied automatically.
References
portugalrealestatelawyer.com – IMI Portugal 2026: Property Tax Rates, AIMI & How to Pay / Portugal Pathways – IMI Property Tax in Portugal: Rates & Exemptions
