Filing the Modelo 3 IRS in Portugal in 2026 — A Practical Guide to the 1 April–30 June Window, the Pre-Populated IRS Automático, the 2025 Brackets, the IRS Jovem Stairway, the e-Fatura Deduction Engine, and the Anexos Foreign Residents Actually Need
Portugal's IRS filing window for 2025 income runs 1 April–30 June 2026. This guide walks the Modelo 3, IRS Automático, 2025 brackets, IRS Jovem, e-Fatura deductions, and the anexos foreign residents need — A, B, F, G, H, J and IFICI/L.