Operation Obsidian: Federal Revenue and Federal Police combat false tax consultancy that caused losses of R$450 million

On April 24, 2025, the Federal Revenue Service (Receita Federal) issued an update regarding Operation Obsidian: Federal Revenue and Federal Police combat false tax consultancy that caused losses of R$450 million. The operation aims to recover the sonegados values and reestablish fair competition by combating a false consultancy that applied scams to negotiate inexistent credit rights, affecting 496 taxpayers in 173 cities across 21 states. The investigation reveals a complex scheme where taxpayers were lured into contracting fake consultancies, which promised to reduce taxes using fabricated stories. The consultancies then used intermediaries to insert fictitious data in compensation declarations, making it difficult for taxpayers to track their actions.