Taxpayers who need to pay a second installment of the Municipal Property Tax (IMI) this month can do so until September 1, 2025, as the legal deadline falls on a Sunday, announced the Tax and Customs Authority (AT).
“The second installment is payable during August, but since the deadline falls on a Sunday, you can pay until September 1, 2025,” revealed the Tax Office in a post on Facebook.
This means taxpayers have one more day to pay this tax to the Finance Department.
In the same post, the AT reminds that “if the tax amount exceeds 500 euros, three installments are issued,” with the second payment due in August.
“You can also opt for direct debit to pay the second installment of the IMI. However, you must complete the adhesion process, with account ownership confirmation, before August 15,” cautions the Tax and Customs Authority.
It’s important to remember that those who own properties (houses, garages, shops, etc.) must pay IMI to the Tax and Customs Authority every year.
Payment deadlines depend on the total tax amount, as described on the public services portal gov.pt:
- By May 31 – if the amount payable is equal to or less than 100 € (paid in a single installment);
- May 31 and September 30 – if the amount is between 100 € and 500 € (paid in two installments);
- May 31, August 31, and November 30 – if the amount exceeds 500 € (paid in three installments).
This year, the May deadline was postponed to June due to the energy outage on April 28, which caused delays in issuing IMI payment notices.

Again, remember those who have properties in their name must pay IMI to the AT every year. During August, the second installment of the IMI is payable for those with a tax amount exceeding 500 euros.
Additionally, if you prefer, you can pay the total tax amount in one go.
“The letter sent with the amount to pay in May also includes the amount and reference for paying the total installment,” reads the same portal.
What happens if you don’t pay on time?
If you miss the IMI payment deadline, you may incur late payment interest or even a fine, according to Article 116 of the General Tax Infractions Regime.
Are there exemptions?
Yes. For permanent exemption from IMI, you must meet the following conditions:
- Your family income must not exceed 2.3 times the annual Social Support Index (IAS). That is, 16,824.50 euros (522.50 euros x 14 months x 2.3) in 2025;
- The house must be your permanent residence and the VPT must be less than or equal to 67,260.20 euros.
- The exemption is automatically granted annually by the Finance Department.
On the other hand, for a temporary exemption, the following criteria must be met:
- Your new property must not have a VPT exceeding 125,000 euros and it must be your fiscal residence.
- Your family income must not exceed 153,000 euros annually.
Note that the “temporary exemption has a maximum duration of 3 years and cannot be requested by families with debts to the State.”
Moreover, “Law No. 56/2023, of October 6, 2023, added the possibility of prolonging the exemption for another 2 years, depending on the decision of each Municipal Assembly.”
“This exemption request can only be made twice in a lifetime by each taxpayer or family unit,” reads the same portal.