Sign up for the Chase Freedom MasterCard and earn $100 Cash Back when you've made $500 in purchases during the first 3 months. You'll also get a 0% intro APR for 15 months on purchases and balance transfers, and 5% cash back on up to $1,500 spent at gas stations and restaurants from July to September. Every 3 months, you'll enjoy new 5% categories like grocery stores, movie theaters and even airlines. Activating this bonus is free and easy. Otherwise, you get unlimited 1% cash back on all other purchases, without limits on what you can earn.