As an investor resident in a jurisdiction identified as a tax haven by the Brazilian Tax Authority, your trading activities are subject to specific capital gains tax rules under Brazilian regulations. Consequently, IBKR is required by the Brazilian Tax Authority to collect taxes on your trading activities according to the local Brazilian regulations.
Regular Trades and Day Trades are matched by the exchange according to local Brazilian regulations. Capital gains are calculated using average price in line with Brazilian regulations and are not impacted by the specific tax lot selected on the trade.
The reported amounts and transactions are in line with local Brazilian regulations and may be noticeably different from your profit or loss on your trading activities, or the amounts upon which you owe tax in your home jurisdiction. This is due to Brazil's distinct tax calculation methodology for investors in tax havens. Please consult guidance provided by the Brazilian Tax Authority or a qualified tax advisor to understand the specific capital gains tax calculation methodology.