Overview
- - Online filing closes on 21 May for departments 1–19, 28 May for 20–54, and 4 June for 55–976, based on the taxpayer’s department of residence as of 1 January 2025.
- - Paper forms remain limited to taxpayers without internet access or unable to validate prefilled data, with a submission deadline of 19 May 2026.
- - The income tax scale is indexed to inflation for 2026, with all brackets increased by 0.9% as confirmed by Bercy.
- - Under the updated scale, a single filer becomes taxable from an annual revenu fiscal of €17,604, roughly equivalent to €1,630 net per month.
- - Tax notices will be issued in summer, and any underpayment will be collected from September to December 2026 in one debit under €300 or four monthly debits for higher amounts.