Property Capital Gains Tax Calculator 2026: mais-valias in Portugal

Estimate the IRS capital gains tax (mais-valias) when selling a property in Portugal. Only 50% of the gain is taxable, at the progressive 2026 IRS rates — the same rules apply to residents and non-residents since 2023.

Improvements in the last 12 years, IMT paid, agency and legal fees.

Official monetary coefficient if held >24 months, published yearly — leave 1.00 if unsure.

Your other income determines the marginal rate applied to the taxable gain.

Since 2023 both are taxed the same way: 50% of the gain at progressive IRS rates.

Estimate only. It ignores the primary-residence reinvestment exemption and the pre-1989 acquisition exemption. The devaluation coefficient is published yearly by the government. Non-residents must also declare their worldwide income so the correct marginal rate is applied. We help you buy and sell property and handle the tax filing.

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