When you open an eligible new Discover card, you'll be able to take advantage of Discover Cashback Match (called Unlimited Bonus with the Discover it Miles). Discover will match all the rewards you earned after the first 12 months with no caps, including your bonus category earning.  For instance, if you earned $400 in rewards in the first year of having the Discover it Cash Back, Discover would match that for a total of $800 back in the first 12 months.