Foreign landlords owe IRS on rental income and IMI on the property itself. Knowing the rates, deadlines, and deductible expenses keeps you compliant — and keeps more of your yield.
The problem
Tax is where remote investors lose money quietly. Missed deductions, late filings, and confusion between IRS and IMI add up — and from abroad, a missed Portuguese deadline is easy to make and costly to fix.
The two taxes that matter most
- IRS on rental income — on net income; some expenses are deductible.
- IMI (municipal property tax) — annual, based on the property’s tax value (VPT).
- Electronic rent receipts — the basis for your income declaration.
- Deadlines — IRS and IMI dates are fixed; missing them triggers penalties.
To estimate the IRS on your rent, deductible expenses included, use the rental income tax calculator. From abroad, an accountant for landlords in your region can handle the return and the deadlines for you.
Protection that’s also deductible
Insurance premiums and eligible costs are often deductible — so protecting your income can also reduce your taxable base. Ignoring deductions overpays tax every year.
Frequently asked questions
Are mortgage interest and maintenance deductible?
Several rental-related expenses are deductible against IRS rental income; keep documented receipts for all of them.
