According to the search results, the 5% cashback on Discover card for this month depends on the quarter and the category. Discover has a rotating set of bonus categories that earn 5% cash back, up to $1,500 in purchases each quarter. The Q4 2023 category runs from October 1 to December 31, and it is Amazon.com and Target. To earn the 5% cash back, cardholders need to activate the offer and make purchases within the category limit. It is important to note that the Q1 2024 category will be released in December.