Today, Monday, August 31st, is the deadline for Portuguese taxpayers to settle their income tax related to 2025 income. This date applies to cases where the tax assessment was made until July 31st.
The same deadline applies to the issuance of refunds by the Tax and Customs Authority. Thus, taxpayers who are entitled to receive money back must wait until this date to receive the refund.
Taxpayers who fail to meet the payment deadline may face interest and fines, as provided under Portuguese tax law. It is important to note that this deadline only concerns assessments processed until July, not covering declarations submitted subsequently.
