A common misconception about the B-1 visa process is that in order to be approved, you must provide proof of a certain amount of funds in your bank account. Although financial considerations are one aspect of the B-1 process, and the consular officer may check to see if you are able to support yourself financially during your time in the U.S., there is no minimum required amount of funds that need to be met. That said, if asked, you'll need to show enough money to fully cover your trip, which includes any family members with you.