What was charged this year is Oeiras, which, from one year to the next, went from the minimum to the maximum value, expecting to collect an additional 17.7 million euros with the increase.
Oeiras thus joins the municipalities of Nazaré and Cartaxo (which maintained last year's decision), where the IMI (Municipal Property Tax) will have to be paid at a rate of 0.45% in 2026. However, the municipality led by Isaltino Morais also decided to guarantee "a 20% reduction in the IMI rate applicable to urban buildings rented for housing," provided that the monthly rent does not exceed the average of affordable rental values.
The deadline to communicate the IMI rate to be charged in 2026 to the Tax Authority only ends on Wednesday, but about 70% of the municipalities on the mainland have already disclosed the values they have decided to apply, both on the Finance Portal and publicly. Compared to the rates applied this year, most municipalities decided to maintain the minimum value. Torres Novas (which went from 0.36% to 0.34%), Sines (from 0.34% to 0.33%), Portimão (0.38% to 0.37%) and Loures (from 0.362% to 0.361%) are among those that lowered their rates.











