As long as the card's payment network — in this case, Mastercard — has categorized your favorite thrift store under that MCC, you should be rewarded for shopping there with that desirable 4% rate.
The card features unlimited 2% cash back on all purchases, a sign-up bonus and a 0% intro APR promotion. When it comes to flat-rate cash-back cards, it's hard to beat 2% back, especially when the ...