19/10/2026
Honestly? The costs that mess up a budget in Portugal are rarely the big ones. It’s the small stuff. And it usually shows up in Portuguese.
When you’re buying from abroad, your spreadsheet probably stops at the deed. Price, IMT, notary, maybe a renovation. Then the place starts earning, and a whole new list of costs kicks in.
€100 isn’t going to change your mind about a property. But your rental yield is just a bunch of small lines added up. Forget a few and the real number ends up lower than the one you planned for.
A few things we’d tell a friend:
→ This duty comes with registering the lease at the tax office. And registering isn’t optional. You have to do it anyway.
→ Stamp duty has company. IMI, condo fees, insurance, maintenance and tax on your rental income are the ones people tend to lowball.
We started out in Porto as foreign investors too. Same language barrier, same paperwork. So we sit down with our in-house legal and tax team and map every cost with you before you commit to anything.
So, what’s the cost that caught you off guard when buying abroad? Drop it below 👇