Many credit card companies keep changing their terms and even the best cash back card might not end up being too beneficial for you if you are not on top of these changes. Serious companies always inform consumers about these changes but in most cases, such fine-print notifications go unnoticed.
However, make sure you can read and become aware of changes in rewards programs that your credit card company notifies you of. If there is a decrease in the bonus points or cash back percentage being offered, then you always have the option of looking for a more beneficial card, given that you have a decent credit score. You can read more about understanding these notifications at maybank2u.