MetaMask and Mastercard Launch Self-Custodial Card in the US

Unlike traditional crypto debit cards that require users to “pre-load” funds onto a centralized exchange—effectively giving up control of their assets—the MetaMask Card is fully self-custodial.

“Users retain control of their digital assets in their MetaMask wallet until the moment they pay,” stated a spokesperson for Consensys.

This means your funds remain on-chain and under your private keys until the transaction is authorized at the point of sale. At that exact moment, the system converts the necessary amount of crypto into fiat currency to settle the payment.

Tiers and Rewards: Going “Metal”

The rollout introduces two distinct tiers for US users:

• Virtual Tier (Free): A digital-only card with 1% cashback on purchases.
• Metal Tier ($199/year): A premium 16-gram stainless steel physical card offering 3% cashback (on the first $10,000 spent annually), no foreign transaction fees, and higher ATM withdrawal limits.

All rewards are paid out in mUSD, a new Ethereum-based stablecoin issued via the Stripe-owned Bridge platform. This ensures that even the rewards remain within the Web3 ecosystem.

Supported Networks and Assets

To keep transaction costs low, the card primarily utilizes the Linea network, an Ethereum Layer 2 (L2). Currently, US users can spend assets including:

• Stablecoins: USDC, USDT, and mUSD.
• Yield-bearing tokens: aUSDC (via Aave), allowing users to earn interest on their balance until the second they spend it.

The Impact on Crypto Adoption

This partnership is more than just a new product; it is a validation of self-custody by a global financial giant like Mastercard. By removing the “friction” of off-ramping to a bank account, MetaMask is positioning itself as a direct competitor to traditional checking accounts. According to Mastercards official newsroom, the goal is to empower people to spend their digital balances as securely and easily as traditional cash.