QuickBooks Point of Sale Merchant Service integrates seamlessly with Point of Sale software to save you time and help reduce manual data entry and bookkeeping errors. With options for a low discount rate and low monthly fees, and with no monthly equipment charges, QuickBooks Point of Sale Merchant Service is another time and money-saving solution from QuickBooks. You may use another merchant service with Point of Sale, but you will have to manually enter the transaction information into your credit card terminal.