Today Is the Deadline: Validate Your 2025 Tax Invoices or Risk Losing Deductions

Monday, 2 March marks the final day for taxpayers in Portugal to validate their 2025 invoices on the Portal das Finanças. The deadline, originally set for the end of February, was extended by two days because 28 February fell on a Saturday. There will be no further extension.

The process is straightforward but essential. Taxpayers must log into the e-Fatura portal and associate each invoice issued with their NIF to the correct expense category. The available categories include health, education, real estate, nursing homes, vehicle maintenance, hospitality and catering, hairdressing and beauty, gyms, veterinary services, newspapers and magazines, and public transport passes.

Why It Matters

Invoices that are not properly categorised will default to the generic "other" field, counting only toward the general and family expenses block with a deductible cap of 250 euros. Properly assigning invoices to specific categories can significantly increase the deductions applied when income tax is calculated between April and June.

Health expenses deserve particular attention. Any medical expenses charged at the 23 percent VAT rate require the taxpayer to indicate whether the purchase was made with a medical prescription. Without this step, those expenses will not qualify for the higher health deduction.

Who Needs to Act

Every member of a household must validate their own invoices individually — there is no family-wide submission. Self-employed workers, or those combining salaried employment with freelance income, face an additional step: they must separate invoices related to their professional activity from personal expenses.

The validation can be done through the Portal das Finanças website or via the e-Fatura mobile app, which may be the more convenient option for those managing this at the last minute.

For residents who moved to Portugal during 2025 or who are filing Portuguese taxes for the first time, the system can feel opaque. The key principle is simple: every invoice you received during the year should appear in your e-Fatura account. If any are missing, the merchant may not have submitted them, and you may need to register the invoice manually or contact the vendor. The tax authorities have been digitising this process for years, and Portugal's e-Fatura system is now one of the most comprehensive invoice-tracking platforms in Europe — but it only works if taxpayers engage with it before the deadline.

After today, the next critical date is the opening of the IRS filing period in April.