Originally Posted by ClassCAir
AmEx Blue Cash can earn you 5% cash back on gas if you use the card a lot. The catch, you only earn 5% after you have already spent $6,500 on the card year-to-date. The good thing is that you would earn cash back with Costco Gas.
Actually, if you read the fine print, the 5% number includes a "bonus" for carrying a balance... meaning you have to pay finance charges to get your increased cashback. If you do not carry a balance, you earn only 3% on your gas purchases (and that's in the top tier, after your $6500 in spending). In general, the Blue Cash card is NOT a good deal... you'd be much better off using the Citi Dividend card at grocery stores, drug stores, and gas stations (same places you'd get the higher bonus with Blue Cash), and using your Costco AmEx card elsewhere (because it gives the same cashback as Blue, but with lower tiers and NO maximum per year).