Both look like ordinary payment cards, but they start from different money and fix the exchange rate at different moments. This article explains where the two diverge and how to choose.
Published September 30, 2026 · 3 min read
The difference is the money you start with and the moment it changes currency. A prepaid forex card is loaded with fiat, so you must already have that fiat and you buy the foreign currency when you load. A crypto card is funded from a wallet balance and converts at the point of payment. In everyday use at the till, the two behave much the same way.
On a prepaid forex card the rate is set when you load it. That makes the amount you can spend abroad predictable in advance, which is useful if you are budgeting for a trip. On a crypto card the conversion happens when you pay, so the rate depends on the moment of the purchase and can differ from one payment to the next. Neither approach is better in general: one trades flexibility for certainty, the other the reverse.
A forex card is funded with fiat: you buy the currency and load it, with the rate fixed at that step. A crypto card is funded from a wallet balance. With Nexus Pay, moving money from the wallet balance to the card costs 0.1%, so 1000 USDT becomes $999.00 on the card. Coins can be swapped inside the wallet at 0% with no markup on the rate, and the amount you receive is shown before you confirm. For forex-card load fees and limits, read the issuer's own terms.
| Aspect | Prepaid forex card | Crypto card |
|---|---|---|
| What you load | Fiat currency | Balance from a crypto wallet |
| When the rate is set | When you load the card | At the point of payment |
| Where the money comes from | Fiat you have already bought | Stablecoins or other coins you already hold |
| Spending limit | Only the loaded balance | Only the card balance |
| Where it works | Wherever the card network is accepted | Wherever the card network is accepted |
Both spend only the balance you have put on them, with no credit and no overdraft. Both work where the card network is accepted, online or in person, subject to the card type. That limit is a useful safeguard, because a purchase cannot push you into debt. Controls vary by issuer, but on a Nexus Pay card you can freeze and unfreeze it in the app with one tap.
A crypto card suits someone who already holds stablecoins and would rather not buy fiat just to load a card. A prepaid forex card suits someone who wants the rate fixed at loading, for example to know what a planned trip will cost in the local currency.
Nexus Pay is one option in the first group: it holds USDT, USDC, BTC and ETH and offers a Visa card with no monthly fee.
First, look at the whole cost: issue fee, load or transfer fee, and any per-withdrawal charge. On Nexus Pay these are 5 USDT for the virtual Signature card, 25 USDT for Business and 99 USDT for the physical card including delivery. ATM withdrawals cost 0.25% each, and the ATM owner may add its own fee. Second, issuing a card requires identity verification. Third, blockchain transfers are irreversible, and each deposit address belongs to one network. Finally, tax treatment of spending crypto depends on where you live; this article is general information, not tax or legal advice.
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