Opinion by: Vikram Arun, co-founder and CEO of Superform
The ubiquitous crypto card—often marketed as a bridge between digital assets and everyday commerce—is not the future of payments. Instead, it represents a temporary, compromise-heavy interface designed for a world still anchored in traditional finance (TradFi) paradigms. These cards rely on legacy banking partners for issuance, payment giants like Visa or Mastercard as essential gatekeepers, and regulatory compliance frameworks that merely mimic their TradFi counterparts. In practice, most require users to liquidate their cryptocurrency holdings into stable fiat currency before spending. This process halts any yield generation on those assets and, critically, creates a taxable event with every transaction. What we have is not financial innovation, but a debit card with several unnecessary, costly steps built on top of it.
As digital banking infrastructure built natively on blockchain technology scales and matures, these debit-style crypto cards will become obsolete. The future belongs to systems where the physical or virtual card is merely a thin, user-friendly layer atop a robust foundation of onchain credit. In this model, spending power is derived from a credit line secured by yield-generating digital assets, not from the forced sale of those assets.
The Structural Flaws of Today’s Crypto Cards
To understand the necessity of this shift, one must examine the mechanics of current offerings. These systems force a painful, archaic trade-off: to access liquidity, you must sacrifice ownership and future yield. This directly contradicts the core crypto ethos of self-sovereignty and capital efficiency.
Debit-style crypto cards recreate the very “liquidity vs. ownership” false choice that cryptocurrency was invented to solve. Users must convert their assets into a spendable fiat balance, which immediately stops those assets from earning yield in decentralized finance (DeFi) protocols or through staking. The system becomes structurally negative-sum without substantial interchange fee subsidies from card networks. According to industry data, typical interchange fees for such cards range from 1% to 3% per transaction, plus a flat fee, which are ultimately passed to the user or absorbed by the issuer. While the interface may appear decentralized, the underlying dependencies on banks, card networks, and TradFi-style compliance are profound and restrictive.
Furthermore, from a tax perspective, the U.S. Internal Revenue Service (IRS) treats the conversion of cryptocurrency to fiat currency as a taxable disposal. This means every coffee purchase, transit fare, or online subscription triggers a capital gains or loss event, creating immense reporting complexity for users. Assets are permanently removed from productive, yield-bearing use the moment they are sold to fund spending.
Onchain Credit: A Paradigm Shift from Spending to Borrowing
The alternative is onchain credit, a model where users deposit yield-bearing assets as collateral to open a revolving credit line. Instead of selling, they borrow against their holdings. When a purchase is made, debt increases, but the collateral remains in the user’s wallet, continuing to earn yield uninterrupted. Assets are only sold in the event of a default and liquidation, which is governed by transparent, pre-coded smart contract rules rather than discretionary bank policies.
This transforms the user’s relationship with their assets. Spending does not diminish ownership; it increases debt. The collateral compounds in value (or yield) until the credit line is repaid or, in a worst-case scenario, automatically liquidated. There are no forced conversions and no idle, non-productive balances. Current market data from DeFi analytics platforms like DeFi Llama shows that yield-bearing stablecoins commonly offer around 5% annual percentage yield (APY), while other DeFi strategies can range from 5% to 12% APY, depending on protocol demand and token incentives. Users holding these instruments in a credit vault maintain both spending power and yield generation.
Expanding the Definition of “Productive Collateral”
This credit-first approach fundamentally redefines what constitutes valuable collateral. The question shifts from “What can be instantly sold for cash?” to “What asset can be priced continuously, with bounded risk, and unwound deterministically?”
This allows a much broader range of productive, non-cash assets to secure credit. First-class collateral can now include vault shares from yield strategies, tokenized U.S. Treasury bills (like those from protocols such as Maple Finance or Ondo Finance), and complex strategy positions. These assets remain economically active and income-producing until a liquidation event is mathematically triggered. When assets keep earning, the user avoids the liquidity-yield trade-off entirely. Protocols can earn through management and performance fees rather than relying on interest rate spreads, aligning incentives more closely with user success.
The Card Becomes a Disposable Interface
In this new paradigm, the card itself is not the product—it is a compatibility layer. Its sole function is to translate a spending request into an authorization query against the user’s onchain credit line. The real product is the credit facility: the protocol’s ability to assess the user’s collateralized balance sheet in real-time and approve or deny a transaction
