I will continue to use my current bank account for my checking account. All investments will deposit into this account. Much of that money will be moved to my Swiss account, but I will definitely make sure that I could pay all of my bills which will be my credit cards. Since I no longer will have a rent payment, everything else is just credit card. My lifestyle will increase some, but not nearly enough to endanger my net worth.
With that in mind, I will rarely write checks (unless paying taxes), and I will not use my debit card (unless I need cash). For all other instances, I will use credit cards to pay for everything, and then use my income to pay off my credit cards in full. If I find that I will need to make a significant purchase that is beyond the available credit of my credit card, then I will make sure that money is in the checking account, and then use the checking’s debit card to pay for the purchase. Auto and building purchases will be done by a wire transfer.