In PHP POS you can now collect tips for a sale. To enable tip collection to to store config and check the box "Enable Tips"
After a sale is completed you can enter the tip. To do this go to sales --> "..." --> Enter tips. You will be able to enter tips for the last day of sales. If the tip is a credit card tip and you are using one of our supported credit card processors, the tip will be added to the credit card charge
Note About Integrated Credit Card Tips
The supported credit card processors are all US EMV processors and Vantiv/Mercury Hosted Checkout platforms.