You don't pay anything to the government for operations within the brokerage, but if you withdraw large amounts in BRL to a bank account, you will have to declare it.

Could you guys answer a question for me about tax? Binance is a foreign exchange, so national rules don't apply to Binance, is that it? For example, if I have any type of profit on cryptocurrencies, do I have to pay 15% regardless of the amount? Or is there a minimum amount?