In Portugal, the PIT (Personal Income Tax) system requires taxpayers to meet various deadlines throughout the year. In 2026, the Tax Authority has simplified and aligned several of these deadlines, making planning and compliance clearer.
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Harmonised Deadline: 2 March 2026
Several important obligations must be completed by 2 March:
- Validate all invoices on the e-Fatura portal so that expenses can count towards tax deductions.
- Update your family status on the tax portal if there were changes during the previous year (e.g., births, marriage, divorce).
- Report rental income and related expenses, if applicable.
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March Consultations and Disputes
Between 16 and 31 March, taxpayers can review the tax deductions calculated by the Tax Authority and file complaints if errors are found. Until 31 March, you can also designate the entity to which you wish to assign part of your PIT or VAT.
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Filing the IRS Tax Return
The PIT return for 2025 income must be filed online between 1 April and 30 June 2026. This period is the main submission window for most taxpayers.
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Tax Notice and Refund
The Tax Authority must issue the tax notice by 31 July, and if a refund is due, it should be completed by 31 August.
Conclusion
The 2026 PIT deadlines in Portugal have been streamlined, especially by concentrating key obligations by 2 March. Knowing and respecting these dates is essential for avoiding penalties and ensuring correct tax treatment.
How Nominaurea Can Help
Nominaurea provides expert support with tax compliance and accounting, including PIT preparation and submission, invoice validation in e-Fatura, family status updates and comprehensive tax planning to ensure you meet all deadlines and optimise your fiscal position. Whether for individuals or businesses, Nominaurea can guide you through all stages of your tax obligations.
