cash-back

US /ˈkæʃ.bæk/
UK /ˈkæʃ.bæk/
"cash-back" picture
1.

a system in which customers are given a small amount of money back when they pay for something with a debit card or credit card, or when they make a purchase at a store

:
I got some cash-back at the grocery store.
Many credit cards offer cash-back rewards.
1.

relating to a system where money is returned to a customer

:
This credit card has a great cash-back program.
They offer a cash-back bonus for new sign-ups.