MetaMask and Aave have partnered to enable spending of Aave’s yield-bearing aUSDC directly through the MetaMask Card, a Mastercard-powered debit card. Users can now tap their card at any Mastercard-accepting merchant globally and pay with assets that were earning interest right up until the transaction settled.
The system converts only the necessary amount of aUSDC to fiat at the point of sale. The rest of the balance keeps accruing yield in Aave’s lending market, untouched. Settlement happens instantly on Linea, an Ethereum Layer-2 network built by Consensys, the same parent company behind MetaMask.
The MetaMask Card also offers up to 3% cashback on its Metal tier, stacking on top of whatever yield Aave is generating, and is available in the US and Europe. This integration builds on MetaMask’s Stablecoin Earn product, which launched on July 28, 2025.
The core innovation is capital efficiency. Before this integration, spending stablecoins meant choosing between liquidity and yield. For Aave, MetaMask’s integration could support a milestone of over $100 million in related activity. The risk: self-custodial spending means users bear full responsibility for security, and smart contract risk remains.