What’s ur average daily balance and the balance in sept month and 30th sept respectively?
If both are low and significantly below $100K, you can still earn 3.35% interest this month from the public promo which starts from Oct to Nov.
If the latter is low, you need to ensure 31st Oct balance is $100k more than 30th sep balance to earn 3.35%, 3.4% and 3.5% on the incremental eligible balance in the months of Oct, Nov and Dec.
However, if one has a high sept average daily balance and does not have any intention to keep incremental eligible balance for the next 2 months, I dun see how by having $100k above sept 30 on 31st Oct will benefit. (Unless u wanna have a safety net in case u have more money to meet the incremental eligible balance for nov and/or Dec)