The President of the Slovak Republic signed the law ratifying the amending protocol to the 1986 tax treaty with Brazil on 9 May 2025.

The treaty prevents double taxation and fiscal evasion on income between Slovakia and Brazil.

This is the first revision to the treaty, which will become effective once both nations exchange their ratification instruments.

Earlier, representatives from both countries signed a protocol amending the original income tax treaty on 10 December 2024.