Over the last few years, card issuers have continuously improved their credit card offers to stay competitive. A big portion of these improvements have been dedicated to the card’s sign up bonus, a reward you receive for signing up and spending a minimum amount within a certain period of time, usually 90 days.

These bonuses aren’t exactly mundane either, with some cards offering a huge $500 cash back bonus. It’s a great way to earn hundreds of dollars of rewards quickly, but these offers don’t stick around forever. Below you will find a few of our favorite offers on the market today.