The ability to pay with cryptocurrency using a card may seem like a direct integration of blockchain technology into everyday payments. In practice, however, most crypto cards don’t interact directly with the processing of crypto transactions. The key question, then, is how the link between crypto assets and the traditional payment system is actually structured, and where crypto cards fit within it.
Crypto Cards Explained
A crypto card is a bank-issued card that lets users spend crypto assets on everyday transactions, such as retail purchases or cash withdrawals.
It’s important to note that in the vast majority of payment scenarios, a crypto card doesn’t process payments directly in cryptocurrency. Instead, digital assets are converted into fiat currency, and the transaction is then routed through standard card infrastructure.
In other words, crypto cards serve as an infrastructure layer that connects users’ crypto assets to traditional financial rails.
Main Types of Crypto Cards
Under the umbrella term, there are several fundamentally different product types that vary across several key parameters, including:
- Supported Cryptocurrencies
- Conversion Mechanism from Crypto to Fiat
- Asset Custody Model, which may be custodial or non-custodial
- Issuance Format, which may be virtual-only or include a physical card option
- Credit Component
It’s important to note that the conversion of digital assets into fiat is included in nearly all crypto card use cases. At the same time, direct cryptocurrency payments can be executed under certain conditions, but they rely on a crypto wallet address. That address may be linked to a crypto card, but it doesn’t have to be.
In practice, there are 2 primary types of crypto cards: debit and credit. All other differences exist at the architectural level.
Crypto Debit Cards
The simplest and most widely used model of crypto cards is the prepaid card funded through the sale of cryptocurrency. Under this model, the user sells crypto in advance and credits the resulting fiat funds to the card. From that point on, the card functions like a standard debit card, allowing the user to spend the available balance.
The key feature is that cryptocurrency doesn’t participate in payment transactions at all. It’s only used at the funding stage.
Another common model is a debit crypto card with automatic conversion of digital assets at the point of sale. In this case, the card is linked to a custodial crypto wallet maintained by the provider, where the user’s assets are held. When a purchase is made, the system automatically converts a preselected asset into fiat currency, which is then used to complete the transaction.
For the user, this feels like paying with cryptocurrency. In reality, the conversion happens at the moment of the transaction, and the merchant receives a standard payment in local currency.
More recently, debit cards with non-custodial storage, as well as cards linked exclusively to stablecoins, have gained traction. From a payments perspective, these solutions rely on the same conversion mechanics described above, but differ in the range of supported assets, the custody model, and, consequently, the level of user control.
Crypto Credit Cards
The payment mechanics of crypto credit cards mirror those of debit cards, with one key distinction: the provider extends a credit line to the user. In this setup, the user doesn’t spend crypto assets directly. Instead, they use them as collateral to access a credit limit.
Purchases are funded with borrowed money, while the cryptocurrency remains locked as collateral. This allows users to maintain their exposure to the asset, but it also introduces credit risk and requires active collateral management.
How Crypto Cards Work
Despite differences in architecture, most crypto cards operate on a similar logic, embedding users’ crypto assets into the traditional card infrastructure. In effect, the payment mechanics are identical to standard card transactions, except for the conversion layer, and follow this sequence:
- Payment Authorization, meaning a request is sent to the payment network.
- Transaction Processing through the payment infrastructure.
- Clearing and Final Settlement between the parties involved.
After that, refunds and chargebacks can be handled under standard payment network rules.
The key distinction in crypto card payment flows lies in how digital assets are converted into fiat. In practice, there are 2 primary conversion models:
- Pre-conversion. The user sells cryptocurrency in advance and funds the card with fiat. The crypto asset doesn’t participate in the transaction, and the payment is identical to a conventional card transaction.
- Real-time conversion. The conversion happens automatically at the point of sale. The user preselects the asset to be debited, the system sells it at the authorization stage, and the merchant receives fiat.
There is also a settlement-layer conversion model. This is the most complex and, so far, the least widely adopted scenario. The merchant still receives fiat, but settlement between intermediary infrastructure providers is conducted in digital assets. For example, stablecoins or tokenized deposits may be used today for interbank settlement.
Risks and Benefits of Crypto Cards for Users
Crypto cards are primarily aimed at digital asset holders, offering a convenient way to use cryptocurrency to pay for everyday goods and services anywhere traditional cards are accepted.
Among the key benefits:
- The ability to use crypto assets as a payment instrument through the same infrastructure as traditional cards.
- Instant access to liquidity without the need to sell cryptocurrency and withdraw funds.
- Flexibility in asset management, depending on the product, users can choose which asset to spend, use stablecoins to reduce volatility, or avoid selling crypto altogether by relying on a credit line.
In addition, many cards offer cashback, rewards tied to specific conditions, and premium features similar to those of traditional bank cards.
That said, convenience comes with a set of risks and constraints that aren’t always obvious at the onboarding stage. Most common include:
- In some jurisdictions, spending cryptocurrency is treated as a taxable disposal. This means each transaction may trigger a tax event, requiring users to report gains or losses.
- Transaction restrictions may include bans on certain merchant categories, limits imposed by the provider or payment network, as well as caps on transactions and cash withdrawals.
- Limited availability of access to crypto cards still depends heavily on jurisdiction. Restrictions may apply even within a single country, and functionality can vary across regions due to differences in regulation and licensing requirements.
- Refunds and chargebacks disputes follow standard resolution procedures, but if cryptocurrency was sold at the point of payment, refunds may be issued in fiat and not necessarily at the original exchange rate, creating additional financial risk.
Users also face a fundamental trade-off between convenience and control, as the vast majority of crypto cards rely on custodial storage of digital assets. This model is easier to use and involves fewer technical barriers, but it requires users to hand over control of their funds to the provider. Non-custodial crypto cards are available in some jurisdictions, including products offered by MetaMask, but they place greater responsibility on users for managing and securing their assets.
Regulatory Landscape for Crypto Cards
Crypto cards operate at the intersection of two domains: traditional payment services and digital assets. As a result, the various infrastructure components involved in enabling crypto cards may fall under different licensing regimes.
For example, in the European Union, crypto cards are subject to both the Markets in Crypto-Assets (MiCA) regulation, which governs digital assets, and the PSD2 directive, which covers payment services. Accordingly, crypto card issuers must obtain Crypto-Asset Service Provider (CASP) and Electronic Money Institution (EMI) licenses in a European jurisdiction, or partner with entities that hold them.
In contrast, the United States still lacks a unified legal framework governing the entire crypto market. Instead, a partnership-based model is widely used, with different functions distributed across multiple participants:
- Card issuance handled by a bank or financial institution
- Product development and interface provided by a fintech company
- Digital asset management handled by a crypto provider
- Transaction processing facilitated by a payment network
In practice, this leads to a range of partnership structures. For instance, in October 2024, FV Bank launched debit and corporate crypto-enabled cards in partnership with Visa. The bank provided custodial services, digital asset conversion, and card issuance.
It’s also worth noting that regulatory regimes for digital assets are evolving across many jurisdictions, making crypto cards accessible to a growing user base.
In sum, crypto cards represent a key tool for integrating digital assets into the existing financial system. They fit seamlessly into established payment infrastructure, abstracting away the complexity of conversion, settlement, and regulation behind a familiar user experience.
