When setting up a service charge for your restaurant, service charges can be assigned to the check owner and operate as gratuity, rather than assigned to the employee and operate as sales.
If a service charge that is set to be assigned to the check owner as gratuity is added to a check, it will affect the suggested tip amounts that show on your digital and printed receipts.
This occurs because your guest has already effectively tipped in the form of a mandatory gratuity.
If they would like to add an additional tip, Toast will automatically take this original gratuity into account and suggest an additional 3%, 5%, or 7% tip to your guests instead of displaying the suggested full tip percentages you have set up in Toast Web.