Called BofA again and it seems my calculation is correct and basically they said that even if my mom drops from the Platinum Honors tier on January 1, 2018 for not meeting the $100,000 average balance on December 31, 2017, I would need a balance of $145,000 on January 1, 2018 so that the average 3 month daily balance on that date will be $100,000 assuming I don’t take anything out so t0 hat at the end of the statement cycle which is basically the last business day of the month, it would meet the $100,000 requirement and she would get upgraded back to the Platinum Tier automatically on February 1, 2018 as they always upgrade those that meet the requirements every month if they are already in the Preferred Rewards program. They also said the Cash Rewards bonus is $262.50 and the Preferred Rewards status for the 75% bonus is only needed during redemption of the reward. Ofcourse the $65,000 needed to earn the extra $112.50 would be earning $70.00 in interest at 1.30% elsewhere so in reality, it’s really only $42.50 more and not $112.50 extra compared to the initial $150.00 bonus.
