Filing the IRS Annual Income-Tax Return in Portugal in 2026 — A Practical Guide to the 1 April–30 June Window, the Modelo 3 Anexos Stack, the Portal das Finanças Pre-Filled Declaration and the Reembolso Pipeline
The IRS (Imposto sobre o Rendimento das Pessoas Singulares, Personal Income Tax) annual return — Modelo 3 — covers the calendar-year 2025 income of every resident taxpayer (and certain non-resident taxpayers with Portuguese-source income) and must...