AIMI: Who Pays and How It Is Calculated
Complete guide to the Additional Municipal Property Tax (AIMI) in Portugal. Who pays, how the brackets work, and how married couples can reduce their bill in 2026.
The Additional Municipal Property Tax (AIMI — Adicional ao IMI) is a wealth surcharge on residential property in Portugal. Unlike IMI, which applies to all owners, AIMI only kicks in above a high threshold.
Who pays AIMI?
AIMI is paid by:
- Individuals whose total VPT of urban residential properties exceeds €600,000
- Married couples or civil partners filing jointly whose combined VPT exceeds €1,200,000
- Companies that hold residential property (no threshold — flat rate applies)
The brackets (individuals, 2026)
| VPT above threshold | Rate |
|---|---|
| €0 – €1,000,000 | 0.7% |
| €1,000,000 – €2,000,000 | 1.0% |
| Above €2,000,000 | 1.5% |
The threshold is €600,000 for single filers and €1,200,000 for joint filers. Only the amount above the threshold is taxed.
Companies
Companies holding residential property pay a flat 0.4% on the full VPT with no threshold. Vacant properties pay 7.5%.
Joint vs. separate filing
Married couples and civil partners can choose between:
- Separate filing: each person uses the €600,000 threshold independently
- Joint filing: combined €1,200,000 threshold, but both incomes are pooled
If both partners hold property independently, separate filing is often more favourable. Use the AIMI calculator to compare both scenarios.
Worked example
Individual, total residential VPT = €900,000:
- Taxable amount: €900,000 − €600,000 = €300,000
- AIMI = €300,000 × 0.7% = €2,100/year
Source: IMI Code (CIMI), articles 135-A to 135-K. Verified for 2026.