If u want to play the $500 savings bonus interest game, u cannot let your average daily balance be reduced. Oh by the way min ADB for 360 account is $3k, else will have fee deducted for low balance
As a simplified illustration:
31 Dec - deposit $3k
1 Jan - deposit $500, end of mth $3.5k
1 Feb - deposit $500, end of mth $4k
......and so on, by 31 Dec of the year, you should have $9k and qualified for the savings bonus interest in all 12 mths
That is how the game is played at the basic level, the moment u take out $, u lose the bonus interest for the month