Portuguese taxpayers who must file Income Tax to the State to regularize the tax related to 2025 income, declared this year, must pay the amount owed by the end of today, the last day of the deadline set for this purpose. This deadline applies to taxpayers who received an assessment notice from the Tax and Customs Authority with amounts to pay.
The Tax and Customs Authority had until July 31 to complete the 2025 Income Tax assessment process, referring to taxpayers who submitted their income tax return within the legal deadline. This legal filing deadline ran from April 1 to June 30.
The payment phase now arrives after the AT completed the assessment process. The affected taxpayers are those who earned income in 2025 and who, after the annual reconciliation, had amounts to pay to the State.



