- Since you recorded a deposit in your bank account, I'd think you can print a deposit slip from the deposit. It doesn't matter if the thing you're depositing is from a vendor or a customer.  What happens when you edit the deposit and click the Print | Deposit Slip from the top of the window?

- No matter what happens, there is no reason to print a deposit slip from QuickBooks. You can fill one out by hand at the bank, if they require it, or the teller will do it for you. Or, deposit the check into the bank's ATM.