"Rotating categories" refers to a system where different types of things or subjects take turns or alternate, usually for organizing or classifying purposes. Full definition
The main draw card would be to double the $ 1,500 in spend you could earn 5 % cash back on in rotating categories every quarter. (doctorofcredit.com)
You can earn up to 5 % cash back on rotating categories such as gas, groceries, dining, etc, each quarter and 1 % on non bonus category spend. (thecollegeinvestor.com)
Cards with rotating categories cards give cash back for certain types of purchases that change each quarter. (valuepenguin.com)