[header] How to get cash back from a credit card [title] Understand how cash back rewards work. [step] The cash back on cards that offer this benefit usually come in the form of credit added back to the account. Depending on the card, you will earn different cash back amounts in the form of percentages. 
The royal bank of canada (rbc), for example, offers a card that pays 2% for purchases in grocery stores and 1% on all other purchases and automatic payments. [substeps] Different issuers will provide different options regarding when to apply the earned cash back benefits.