The form is used for declaring and paying the top-up tax.

On 11 August 2025, Romania’s tax authority (ANAF) published Form No. 408 for declaring and paying the top-up tax.

Earlier, ANAF issued Order No. 1729/2025, which establishes the notification form and it was published in the Official Gazette No. 646 on 9 July 2025.

This development followed Romania’s adoption of the EU Minimum Taxation Directive (2022/2523) into national law through Law 431/2023, known as the Minimum Taxation Law, published in the Official Gazette No. 8 on 5 January 2024.