Card break-even calculator
Cashback is only part of the math. This nets out monthly and issuance fees plus the opportunity cost of any token you must lock to earn the headline rate, using the risk-adjusted reward that discounts token-denominated cashback.
Coinbase Card (Custodial) pays up to 4% in USDC or selected crypto, which discounts to 2.8% risk-adjusted. This card has no token-lock requirement, so the fee line is the only drag on the headline rate. You need roughly $0/month of spend just to cover the fees and lock opportunity cost.
Informational only, not financial advice. Terms, fees and availability change frequently — always verify on the provider's own site before committing funds. Some outbound links may be partner links; they never affect ranking or scoring.