I believe Global Payments knows just about all of your bank account information once you initiate one transaction. They also determine what amount check a casino will cash for you. I always figured they basically knew roughly your banking balance. It’s possible there is some kind of algorithm they use over time, but regardless they have a pretty dam good idea. They get the substantial fee if you utilize a POS transaction if you have already used the ATM for the daily max. I am a little surprised BetMGM would allow ACH up to 10K on a new account.