IOF changes for FX transactions: understand the new rules

Two new decrees – No. 12,466, dated May 22, 2025, and No. 12,467, dated May 23, 2025 – have amended the IOF rules for credit, insurance, and foreign exchange (FX) transactions.

The changes have been in effect since May 23, 2025, except for those relating to advance payment and other financing transactions granted to suppliers, which will only enter in force as of June 1, 2025.

Below is a high-level summary of the main changes to the IOF rates for FX transactions, focusing on the most usual types of FX transactions.

Our teams are available for clarifications and guidance regarding the changes highlighted in this newsletter. 


1. In general, the rate is 0.38% or 1.1%, depending on the type of transaction. Decree 12,466 raised the rate to a unified 3.5% for purchases of foreign currency in the form of cash, transfers to a person’s own account abroad and withdrawals abroad. Decree 12,467 included item XXI-A, returning the rate to 1.1% for remittances for investment purposes (this may be further regulated by the Brazilian Federal Revenue).

This newsletter provides information about legal developments in Brazil to clients and members of Cescon, Barrieu, Flesch & Barreto Advogados. The content included herein is not meant to provide legal advice with respect to any specific matter. We do not undertake to update, supplement or modify the information contained herein.

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