You will receive a day trade call if you exceed your day trade buying power. You may receive a day trade call even if you do not exceed 3 day trades within 5 business days.
Day trade buying power is calculated based on your maintenance margin excess as of the previous business day. Please note that day trade buying power will not be increased by closing positions that were opened on previous trading days.
Once you trigger a day trade call, you will have up to five business days to deposit funds to meet the day-trading margin call. If the day trade call is not met by the 5th business day, your account will be restricted to Liquidation Only for 90 days or until the call is met.