Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Why do credit cards require a minimum annual household income?
I don't know, but I can guess. You'll notice the Elite card has higher rewards. A card might want to convince merchants that they represent high end buyers, and use that to negotiate higher merchant discounts. Issuing bank: "Our 10 million card holders are sophisticated and have lots of discretionary income. If you don't agree to this rate, we'll terminate the contract and they will take their business elsewhere."  Merchant: "But it's twice the rate of everyone else! I'm sure these customers have other means of payment, and besides, how many of those card holders are actually using it?" Issuing bank: "Our cardholders signal their interest in the benefits of cardholding by paying us an annual fee. If they didn't want one, they'd stop paying right? They clearly know they have one and our records indicate they use them regularly. We're pretty sure if you don't wise up they'll shop at your biggest competitor, another client of ours. pause Frankly, they already do."