Some Cashback Credit Cards providers require you to spend a minimum amount before you can start earning rewards. Providers may also limit the amount of Cashback rewards you can earn, while others implement caps on how much you can spend for certain categories. It's also common for providers to set an increase in cashback return rates for certain categories within a specified period which are worth taking advantage of.
The best way to maximize cashback points is to choose a card that lets you earn rewards that matter to you. If you're serious about pursuing cashback rewards, you must make sure to fully understand the terms and conditions of your selected credit card. Terms are always subject to change, so it's important to always stay educated on these.