Crypto cards explained

The merchant requests an authorisation in their own currency. Your issuer checks the funding balance, converts if the balance is not already in that currency, and approves. The merchant is settled in fiat exactly as with any other card, and the transaction appears on your statement with the amount and the applied rate.

Because conversion happens at authorisation, the rate you get is the rate at that moment. Cards that pre-fund a fiat balance instead let you fix the rate in advance and spend from it — quieter, and easier to reconcile at year end.

Look past the annual fee. The recurring costs are the conversion spread applied when crypto becomes fiat, the foreign-exchange margin when you spend outside your card currency, and any ATM withdrawal fee. A card marketed as free can still be the most expensive one you hold.

The comparison worth doing is total cost on a realistic month of spending: a mix of domestic purchases, foreign-currency purchases and one cash withdrawal. Providers that show the fee before you confirm make that arithmetic possible rather than retrospective.

Virtual cards issue instantly and are ideal for online spending, subscriptions and one-off merchants — a card per vendor limits the damage if any single merchant is breached. They work in wallets on phones and watches for contactless payments too.

Physical cards remain useful for travel, deposits, car hire and anywhere a chip is still required. Most people end up with one physical card and several virtual ones, each with its own limit.

Per-card spending limits, merchant category restrictions, instant freeze and unfreeze, and immediate notification on every authorisation turn a card from a liability into a manageable instrument — particularly for business cards issued to a team.

At The Vision Bank cards draw on the same balances as the rest of the account, with real-time controls and per-card limits, so a card issued for a specific supplier can be capped and frozen without touching anything else.

In many European jurisdictions spending crypto is treated as a disposal of the asset, which can create a taxable event on every transaction. Spending from a pre-converted fiat balance concentrates those events into the conversions you choose to make rather than scattering them across your coffee purchases.

Rules differ by country and this is not tax advice — but the practical implication is universal: keep exportable statements. A card that produces clean CSV and PDF records makes the eventual filing an hour's work rather than a weekend's.