Crypto card real cost calculator
Almost every crypto card leads with "no issuance fee, no annual fee." That is usually true, and it is also not where the money goes. The cost sits in three places instead: the issuer converting your stablecoin, the issuer settling a purchase in a currency other than the card's, and a cashback rate that quietly stops applying once you pass a monthly cap. This page adds those up and shows what share of a purchase actually disappears.
What a purchase really costs
Stablecoin purchase premium in this calculation: +0.00%. It is zero unless you buy the stablecoin at a local premium.
| Card | Buying the coin | Crypto conversion | Foreign currency | Cashback | Real cost |
|---|
Every rate comes from the issuer's own fee documentation. Open a card and you will see the source link on each individual row. Where an issuer publishes a range — KAST states 0.5%–1.75% for foreign currency, for example — the range is kept rather than averaged into a single number.
What this shows that a fee table does not
1. The monthly cap matters more than the headline rate
3% cashback is not automatically better than 1.5%. Most cards apply the headline rate only up to a monthly spend cap and then drop sharply. Raise "total spend this month" above and the ranking changes. The right card for someone spending $500 a month is not the right card for someone spending $5,000.
2. Some cards do not pay cashback in cash
Where the cashback column carries a tag — ETHFI, USDT, points — the reward is paid in that asset, not in dollars. The number above values it at today's price. What it is worth when you sell is a separate question, and it is the reason a higher headline rate can be worth less.
3. The cost of buying the stablecoin is usually left out
If you buy USDT at a local premium, that premium is a real cost and it applies no matter which card you pick. Comparisons that only list card fees leave it out entirely. The Korean version of this page folds in the live premium from Upbit.
What is deliberately not included
- ATM withdrawals — a separate decision from spending. Per-card ATM fees and limits are on each card page.
- Physical card and shipping fees — one-off costs. Expressing them as a share of a purchase would distort the comparison.
- On-chain transfer fees — they depend on the network and the moment. Tron and Solana are typically under a dollar.
- Annual fees — the table uses the free tier. Paid tiers are laid out in the tier table on each card page.
This page may contain affiliate links. Rewards and fees vary by country, verification result and issuer policy.