It's here for the government🖕. There is no regulation and they don't protect those who make investments, neglecting assets saying it's a criminal thing to do. Now when you win, you want 22%.

The obligation to declare cryptocurrency holdings in income tax returns remains a critical requirement under Normative Instruction No. 1,888/2019 of the Brazilian Federal Revenue Service (RFB).
This regulation, which extends through 2025, requires taxpayers to disclose cryptocurrency assets if the acquisition cost per category exceeds R$6,000. For example, if you own R$5,500 in Bitcoin and R$4,000 in Ethereum, no declaration is required, as both holdings are below the declaration threshold. However, if a taxpayer sells cryptocurrency and the total profit exceeds R$40,000 in a single month, the capital gain must be calculated and the applicable tax paid.