- The annual IRS (Portuguese personal income tax) declaration (Modelo 3) is submitted on the Portal das Finanças (Tax Authority portal), during the legal deadline — usually from April to June. Check the current year's dates on the site.
- Log in with your Portal das Finanças password or with the Chave Móvel Digital (Digital Mobile Key).
- If you are covered by IRS Automático (Automatic IRS), the declaration comes pre‑filled: review and confirm.
- Save the submission receipt. Any refund, if applicable, is paid by transfer to the registered IBAN.
Automatically translated. Always confirm on the official Portuguese source.
Call — Portal das Finanças (AT): 217 206 707 — dias úteis, 9h–19h
Call — gov.pt — Portal do Governo: 300 003 990 ou 210 489 010 — dias úteis, 9h–18h