If you use the SimplySignup built in payment processing system (not your own merchant account or PayPal account), the payments to your account are put into settlements each week and then transferred to your bank account.
You can see these settlements under MyInfo/My Deposits and Payments. If you click the details link it will show which payments were included and which fees were deducted.
The schedule for settlements is as follows:
We cut off the weeks payments Friday midnight, and by Sunday we have processed them to create your settlement (marked Unpaid). When we have received the funds from the Card banks, usually Tuesday or Wednesday they are sent out (marked Pending), and they should be in your bank by Thursday. When we have confirmed that there were no errors or returns, the following week, we mark them as Approved.