Cap rate, short for capitalization rate, measures a property's net operating income as a percentage of its market value. In 2026, Portugal's average gross rental yield is 4.29% according to Global Property Guide, but net operating yield is usually lower after vacancy, maintenance, condominium fees, insurance, and IMI.
Cap rate is one part of the screening sequence: start with rental yield, refine the return with cap rate, stress the loan with DSCR, then compare the full opportunity against the Investifique Deal Index methodology.
What is cap rate?
Cap rate is the annual operating return of a property before mortgage payments. A 5% cap rate means the property generates €5 of net operating income for every €100 of property value.
This makes it useful for comparing different properties, zones, and cities. The financing structure may change from buyer to buyer, but the property-level operating return is the same. If cap rate is strong but debt coverage is weak, the problem is usually leverage, not the asset.
What is the cap rate formula?
Portugal worked example
Assume a €280,000 apartment with €1,600 monthly rent. Gross yield is 6.86%, but the cap rate is lower after real costs.
| Line item | Value |
|---|---|
| Gross annual rent | €19,200 |
| Vacancy at 6% | −€1,152 |
| Condominium, IMI, insurance, maintenance | −€3,940 |
| NOI | €14,108 |
| Cap rate | 5.04% |
The gap between gross yield and cap rate is where weak deals hide. If a listing advertises 7% yield but the true cap rate is 4.5%, the investor is buying less income than the headline suggests.
What is a good cap rate in Portugal?
In 2026, Global Property Guide reports Lisbon average gross yields at 3.76%, Porto at 3.96%, Braga at 4.47%, and Setubal at 4.89%. Net cap rates are normally lower than those gross figures.
Compare deals quickly: use the cap rate calculator to turn rent, price, vacancy, and costs into a clean operating yield. For financed scenarios, model DSCR and cash-on-cash in the rental property calculator.
Sources
- Global Property Guide, Portugal Rental Yields, retrieved 2026-06-19, https://www.globalpropertyguide.com/europe/portugal/rental-yields
Frequently asked questions
What is a good cap rate in Portugal?
For many Portugal rental deals, 4% to 6% is a typical investable net operating range, while above 6% can be strong if the risk is understood. Below 4% usually needs a capital-appreciation or liquidity thesis.
Does cap rate include mortgage payments?
No. Cap rate is calculated before financing. It uses net operating income divided by property value, so it compares the property itself rather than the buyer's loan structure.
Why is cap rate lower than gross rental yield?
Gross yield ignores vacancy and operating costs. Cap rate subtracts recurring costs such as maintenance, condominium fees, insurance, and IMI before dividing by property value.
How should investors use cap rate with DSCR?
Use cap rate first to compare properties before financing. Then use DSCR to test whether the chosen mortgage structure is safe enough for the same property.