Publication of the personal income tax (PIT) return forms to be filed in 2026 in respect of income earned in 2025

New personal income tax return forms for income earned in 2025

The Portuguese Government has published Ministerial Order no. 104/2026, of 5 March, approving the official forms and instructions for the 2026 Personal Income Tax (IRS) return – Modelo 3 and respective annexes, applicable to income earned in 2025.

The new Ministerial Order updates the forms and completion instructions required for the annual IRS filing process and reflects recent legislative developments affecting the Portuguese Personal Income Tax regime.

The approved forms include the main Modelo 3 declaration and several annexes to be used depending on the type of income reported by the taxpayer, including:

• Annex A – Employment income and pensions
• Annex B – Business and professional income under the simplified regime and isolated acts
• Annex C – Business and professional income under organized accounting
• Annex D – Income allocation
• Annex H – Tax benefits and deductions
• Annex J – Foreign-source income

Particular note should be made of the update to Annex J, which now allows the reporting of capital gains from foreign-sourced securities admitted to trading or units in collective investment undertakings benefiting from the partial exclusion regime provided for in article 43(5) of the Portuguese Personal Income Tax Code.

Under this regime, a portion of the capital gain may be excluded from taxation depending on the holding period of the assets: 10% where the assets are held for more than two years and less than five years, 20% where held for five to eight years, and 30% where held for eight years or more. The update addresses a previous limitation under which the reporting framework only covered Portuguese-source securities.

These forms must be used for the submission of the 2026 IRS return relating to income obtained in 2025.

Deadline for submission of the personal income tax return

Under Portuguese tax law, the Modelo 3 IRS return must be filed electronically between 1 April and 30 June 2026 through the Portuguese Tax Authority portal.

Failure to comply with the statutory filing deadline may result in the application of penalties and interest.

An extension of the IRS filing deadline may be requested where taxpayers obtain foreign-source income eligible for a tax credit for international double taxation and the final amount of tax paid abroad has not yet been determined by the ordinary filing deadline.

In such cases, taxpayers may submit form Modelo 49 to the Portuguese Tax Authority within the ordinary filing period, requesting an extension for the submission of the IRS return, until 31 December of the same year, without the application of penalties.

Our team remains available to assist with the preparation of tax returns and the assessment of eligibility for deadline extensions.