I will do like wise too. 1st transfer $200k, 2nd Oct another $200k. At least I confirm that I can get the interest of $400k from the other bank from 2nd Oct onwards. Unless ur transfer limit allow you to transfer $400k on the same dayIf I were you, I will transfer 200k today and $200k tomorrow as there is no way to transfer $400k in a day to earn interest on 2 Oct. The interest forgone on today's out going transfer is pittance.