The VPT (taxable patrimonial value) is on the caderneta predial at the Portal das Finanças; it is not the purchase price. For the total VPT add every rural and urban property of the whole household, home included.
The household's total gross income, before deductions: what the IRS return shows. Your municipality's rate (between 0.3% and 0.45%) is on the municipality's site or the Portal das Finanças.
No permanent exemption (article 11.º-A of the IMI Code): it requires household gross income up to €17,295.59 and a total VPT of all properties up to €75,198.20, at the same time.
You qualify for the temporary 3-year exemption (article 46.º of the Tax Benefits Statute): you pay no IMI from 2026 to 2028, a saving of €997.50. On a purchase it is applied automatically; the home must become your main permanent residence within the following 6 months.
| Permanent exemption (article 11.º-A, IMI Code) | |
|---|---|
| Household gross income (limit €17,295.59) | €45,000.00 · over the limit |
| Household total VPT (limit €75,198.20) | €95,000.00 · over the limit |
| Temporary 3-year exemption (article 46.º, EBF) | |
| Home's VPT (limit €125,000.00) | €95,000.00 · within the limit |
| Previous year's gross income (limit €153,300.00) | €45,000.00 · within the limit |
| IMI years exempt | 2026–2028 |
| Saving over the 3 years | €997.50 |
The permanent exemption is recognised by the tax authority every year on its own initiative; the 3-year one is automatic on purchase and, for construction or works, is requested at the tax office within 60 days after the 6-month move-in deadline.
The 3-year exemption can only be granted 2 times to the same household and can be extended by 2 more years by decision of the municipal assembly.
In both regimes the home must be the main permanent residence, proven by the fiscal domicile, and the household's IRS and IMI filings must be up to date.
Out of scope: the other exemptions (urban rehabilitation, the article 46.º(3) rental variant, entities), the emigrant rule and the autonomous regions' rules. Computing the IMI itself, with the family deduction, is the IMI calculator.
Indicative values, based on the 2026 legal limits. The exemption decision belongs to the tax authority. This information does not replace the law and is not tax advice.