How do restaurants charge your card for the tip if they already ran your card and gave it back to you before giving you the receipt you wrote the tip on?

Question

How do restaurants charge your card for the tip if they already ran your card and gave it back to you before giving you the receipt you wrote the tip on?

In: 169

Answer 1

In my country(South Africa), it’s done as one transaction. You get the bill, write the tip amount and they do the total as one amount.

First time I’ve heard it being done after payment.