Capital Gains Tax in Portugal 2026: A Complete Guide to Selling Your Home means one thing: when you sell a property for more than it cost you (after allowed adjustments), Portugal may tax the profit in IRS. In most cases, only 50% of the gain is taxable, and it’s taxed through your IRS return.
Buying property in Cascais is not the same as buying an average property in Portugal. The tax rules may be national, but the numbers are very local. A percentage that looks manageable in a generic Portugal guide can become a six-figure decision when applied to a €900,000 apartment in Cascais centre
Buying property in Portugal in 2026 is not just a question of finding the right location, negotiating the right price or securing the right mortgage. For investors and international buyers, the real question is simpler and more important: Does the investment still make sense after taxes?
Buying a property in Portugal involves much more than the advertised price tag. Between taxes, fees, and bank commissions, the additional costs can range from 5% to 10% of the property's total price.
