What is a crypto card and how does it work?

What is a crypto card?

A crypto card is a payment card, usually on the Visa or Mastercard network, that you fund with cryptocurrency and spend in ordinary currency such as US dollars. The card program converts your coins, or a stablecoin such as USDT, either when you load the card or when you pay. The merchant is paid in ordinary currency and sees a normal card payment. Mastercard describes one common design as a prepaid card topped up with US dollars or euros when the consumer sells crypto holdings.

Crypto cards come as physical plastic or as virtual cards, which are a card number, expiry date and security code with no plastic. Unlockd issues a virtual USD prepaid card funded from USDT. It is not a bank account, and money on the card is prepaid balance.

Prepaid, debit or credit: the three kinds of crypto card

Crypto cards come in three kinds: prepaid, debit and credit. The kind decides when your crypto is converted and what can go wrong.

A crypto debit card sells crypto at checkout. A prepaid card converts first, so you spend a known dollar amount. Unlockd is prepaid: you hold USDT, accept a disclosed quote, and the card is loaded in US dollars.

How does a crypto card work when you load it and pay?

A crypto card works in two stages: crypto becomes a fiat balance, then the card network moves that fiat to the merchant.

1. Load

   A prepaid program converts your crypto to dollars at a quoted rate and credits the card. A debit program waits until you pay.

2. Authorization

   At checkout, the network routes the merchant's request to the card issuer, which checks the balance, merchant category, country and limits, then approves or declines.

3. Settlement

   The approved amount is held. The merchant then submits the final amount, the issuer pays it in fiat through the network, and the hold becomes a posted transaction.

4. Foreign currency

   If the merchant charges in another currency, the network converts the amount and the issuer may add a foreign-exchange fee.

With Unlockd, conversion happens before the card is involved. You accept a quote that shows what your USDT balance pays and what the card receives. The status screen shows real progress, and a load is usually complete within minutes.

Crypto card fees: what you actually pay

Crypto card fees fall into a few groups: issuance, loading, conversion spread, foreign exchange, declines, inactivity and, on physical cards, ATM use. The conversion spread is often built into the rate, so compare the quote with a public market price.

Unlockd publishes the issuance price, the starting balance included with the card, the load fee and the minimum and maximum load on the fees page. The live figures also appear in the pricing summary below. Each authorization attempt, including a declined one, carries the published authorization fee. When a merchant charges in another currency, the amount is converted to US dollars, and the published fees list any conversion fee that applies.

What limits do crypto cards have?

Crypto card limits usually cap each load, the card balance and spending per day or month, and they restrict the merchant categories and countries where the card works. Unlockd lists its minimum and maximum load in the published fees.

Purchase checks: one-time codes and in-app approval

Online crypto card purchases are often checked with EMV 3-D Secure, a protocol that lets the card issuer confirm the real cardholder is paying. The merchant sends transaction and device data to the issuer. Many purchases pass without a challenge, while higher-risk ones need a one-time passcode or a biometric check.

With Unlockd, the code or an approval request appears in your signed-in account, on the website or in the Telegram Mini App, and only for the verified owner. Enter a code only on the merchant checkout page. See purchase checks if a code does not arrive.

KYC and eligibility: what crypto cards ask for

Regulated crypto card programs verify cardholder identity because the bank or licensed institution behind the card has anti-money-laundering duties. In the United States, for example, a bank's customer identification program must collect at least a name, date of birth, address and identification number, then verify the customer's identity.

Many programs ask for your legal name, date of birth, address and a government ID, sometimes with a selfie check. What a provider asks for depends on its program and on where you live.

Crypto card tax: is spending crypto a taxable event?

In many countries, spending crypto through a card is a disposal, and a disposal can create a taxable gain or loss. The IRS lists exchanging a digital asset for goods or services in any amount as a reportable disposition. HMRC lists using tokens to pay for goods or services as a disposal for UK Capital Gains Tax.

On a prepaid card, crypto is usually converted at load time, so record the date and amounts of every load. The IRS says digital asset transactions must be reported even when they produce no gain or loss.

How to get a crypto card

To get a crypto card, choose a program that serves your country and accepts your coin, pass its identity check, fund the account and order the card.

1. Check the supported countries and accepted coins.
2. Read the fee schedule, including conversion and foreign-exchange fees.
3. Create the account and complete identity verification.
4. Fund it, order the card and make the first load.

How to get an Unlockd card

1. Sign up

   Use Telegram or a verified email and password. One is enough, and the same account works on the website and in the Telegram Mini App.

2. Fund your USDT balance

   Pay a deposit in USDT or another coin listed on the deposit screen. The payment processor converts it, and your balance is credited with the USDT actually settled, after network and processing fees.

3. Accept the issuance quote

   The quote shows the issuance price in USDT and the starting balance included with the card.

4. Get the card

   The status screen shows real progress, and issuance is usually complete within minutes. You can then view card details on demand, freeze the card and see every transaction.

5. Load from your balance

   Accept a load quote to move US dollars onto the card, within the minimum and maximum load.

Create your Unlockd account ↗Eligibility rules apply. Pricing follows the published tariff version.

Is a crypto card worth it?

A crypto card is worth it if you regularly pay card-only merchants from crypto and the load and conversion costs are lower than cashing out to a bank. It is a poor fit if you rarely spend, need cash, or hold a coin the program does not accept. The guide on how to spend USDT online has tips by type of merchant.

Pros

• Pay online merchants that accept US dollar cards without a bank off-ramp.
• A prepaid balance caps your exposure at what you loaded.
• Virtual cards are issued and loaded from a phone or browser.

Cons

• Issuance and load fees add up on many small loads.
• Loads or purchases can be taxable disposals that you must record.
• Virtual cards cannot withdraw cash, and some merchants refuse prepaid cards.
• Identity checks, restricted merchant categories and country limits apply.

Sources

1. Crypto Card Programme Accessed November 9, 2026. Mastercard page describing prepaid cards topped up with US dollars or euros when the consumer sells crypto, crypto-backed credit cards, and launch support through program managers and BIN sponsors.
2. Empowering the future of payments with stablecoins Accessed November 9, 2026. Visa page on stablecoin-linked cards that connect crypto and stablecoin wallets to the Visa network.
3. Mastercard creates simplified payments card offering for cryptocurrency companies Accessed November 9, 2026. Press release dated 2021-07-20 naming banks in discussions to issue cards and partners that convert crypto to fiat for card programs.
4. EMV 3-D Secure Accessed November 9, 2026. EMVCo overview: the merchant sends transaction, payment and device data to the issuer; many transactions are frictionless; higher-risk ones may need a one-time passcode or biometrics.
5. 31 CFR 1020.220 - Customer identification program requirements for banks Accessed November 9, 2026. Minimum identifying information before account opening: name, date of birth, address and identification number, plus verification procedures.
6. Digital assets Accessed November 9, 2026. Exchange or trade of a digital asset for property, goods or services in any amount is a disposition; transactions must be reported whether or not they result in a gain or loss.
7. CRYPTO22100 - Cryptoassets for individuals: Capital Gains Tax: what is a disposal Accessed November 9, 2026. Lists using tokens to pay for goods or services as a disposal.
8. Set up Apple Pay Accessed November 9, 2026. Requires a supported card from a participating card issuer.
9. Find supported payment methods - Google Wallet Help Accessed November 9, 2026. States that your bank decides if its cards work with Google Wallet.