if my balance in 30 June is $0, I need to deposit and maintain at least $5000 on 31 July, 31 Aug and 30 Sep right?
CIMB base and bonus interest are calculated on a daily basis.
Maintain at least 1K and you get the base interest.
Each day that you do not meet the requirement of the 5K, you won't get the calculated bonus interest for that day.
Each month end that you do not meet the requirement of the 5K, you won't get the calculated bonus interest for that month.
it seems there are two conditions, $5k fresh funds on 31 Jul and at each month end?
As long as you maintain 5K fresh funds throughout the month for Jul, you will 100% get the bonus interest for Jul
The 2 conditions are the same. It is just to deter people from moving funds out on the last day of the month.
Treat this as a fixed deposit and you won't have any problem with it.
You can refer to the table shown in page 3 of the Jul TnC as it cover all the possible use cases.