That means you could earn up to an unlimited 2.62% cash back on all purchases. You can earn up to 75% more cash back on every purchase, if you have a business checking account with Bank of America and qualify for our highest Preferred Rewards for Business tier.No annual cap and cash rewards don’t expire.Earn unlimited 1.5% cash back on all purchases everywhere, every time.Get a $300 statement credit after you make at least $3,000 in net purchases in the first 90 days of your account opening.