MetaMask reveals mUSD: a wallet‑native, dollar‑backed stablecoin for Ethereum and Linea

Última actualización: 08/22/2025
  • MetaMask introduces mUSD, a wallet-native USD stablecoin, launching on Ethereum and Linea in 2025.
  • Issued by Bridge (Stripe-owned) and powered by M0 for cross-chain liquidity; 1:1 backed with cash and short Treasuries.
  • Deep wallet integration across swaps, on-ramps and bridging; card spending via a Mastercard-powered MetaMask Card targeted for late 2025.
  • Aligned with the U.S. GENIUS Act, featuring real-time transparency and monthly reserve attestations; no direct yield at launch.

mUSD stablecoin illustration

MetaMask is rolling out MetaMask USD (mUSD), a dollar-pegged stablecoin designed to live natively inside its self-custodial wallet, with an initial release slated for later in 2025. The project positions mUSD as a wallet-first asset built for everyday Web3 activity across Ethereum and Consensys’ layer-2 network, Linea.

Under the hood, mUSD is issued by Bridge, a Stripe-owned stablecoin platform, and leverages M0’s liquidity architecture to support cross-chain mobility. MetaMask plans tight integration across wallet features — from on-ramps and swaps to bridging — aiming to lower friction and costs for its tens of millions of users.

What mUSD is and who sits behind it

mUSD overview graphic

mUSD is designed to maintain a 1:1 peg to the U.S. dollar, backed by cash and short-duration U.S. Treasuries. The issuer, Bridge (acquired by Stripe), will provide real-time transparency alongside monthly reserve attestations, aligning the token with the recently enacted U.S. GENIUS Act. Notably, the stablecoin is wallet-native to MetaMask, yet not issued by MetaMask itself.

On infrastructure, the stablecoin relies on M0’s on-chain liquidity network to enable cross-chain usability and composability. MetaMask characterizes mUSD as the first wallet-native stablecoin from a self-custodial wallet, designed to be seamlessly embedded across its interface and broader ecosystem.

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Launch plan, supported networks and deep wallet integration

mUSD networks and integration

The inaugural rollout is expected later in 2025 on Ethereum and Linea, Consensys’ EVM-equivalent layer-2. Inside the wallet, mUSD will be wired into core flows such as fiat on-ramps, token swaps, transfers and bridging, enabling users to move value with fewer hops and fewer fees.

Beyond the initial networks, the design leans on M0’s liquidity fabric for cross-chain activity, with MetaMask executives indicating the stablecoin is intended to serve as a connective liquidity layer across DeFi. Leadership also signaled that tighter wallet integration could reduce costs and smooth UX versus alternatives, while noting no direct yield will be offered at launch; future in-ecosystem incentives remain a possibility.

Product roadmap and everyday payments

mUSD card and payments

MetaMask plans to enable Mastercard crypto purchases spending via the Mastercard-powered MetaMask Card by the end of 2025, making the stablecoin a funding option for day-to-day transactions at merchants that accept the card. The goal is to connect on-chain balances with familiar real-world payment rails.

For operators and independent workers, the team highlights potential benefits in payroll and cross-border payouts: price stability relative to volatile crypto assets, faster settlement, and lower transfer costs. At the same time, MetaMask acknowledges practical considerations such as local compliance, tax reporting and operational security that businesses must evaluate before adopting stablecoin-based workflows.

Regulatory footing and market backdrop

mUSD regulatory context

The U.S. GENIUS Act, signed on July 18, sets standards for who can issue stablecoins, how reserves must be handled and which disclosures are required. It also restricts issuers from paying yield on customer balances, a rule that informs mUSD’s initial design. By separating MetaMask’s wallet experience from Bridge’s role as issuer, the structure aims to remain squarely within the new framework.

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According to Bridge leadership, recent advances in issuance tooling have taken custom stablecoin projects from year-long builds to weeks, while the Bridge+M0 stack is pitched as a template for application-specific dollars. For MetaMask, that collaboration underpins mUSD’s reserve management, transparency and on-chain plumbing as it targets broad use across DeFi and payments.

MetaMask’s mUSD brings together regulated issuance, audited reserves and deep wallet integration with a launch on Ethereum and Linea planned for later this year. With cross-chain liquidity via M0 and prospective card spending by late 2025, the stablecoin is set up to streamline on-ramps, transfers and everyday usage while adhering to the post-GENIUS regulatory playbook.