Quick answer
#1 Ethena Pay: 1% FX spread (independently verified), last verified 20 Oct 2026; #2 Coca Card: 1.18% FX spread (independently verified), last verified 20 Oct 2026; #3 EtherFi: 0.51% FX spread (independently verified), last verified 20 Oct 2026.
Tested with real money by Tristyn Pawson, Cardify Crypto. How to pick the best crypto card for you
Almost every crypto card advertises a headline FX rate that it does not charge. The gap between the mid-market rate and the amount deducted is the real price of the card, and it typically dwarfs cashback, issuance fees and monthly costs combined. We buy the same item on the same day with every card and record the deduction, so the ranking compares like with like.
After spread, the decisions that matter are custody, funding rails and KYC. Custodial cards hold your balance and are usually faster to top up. Self-custodial cards pull from your own wallet at authorisation. KYC depth varies by issuer and region, and a card that is excellent in Europe can be unusable in the US.