# mStable USD Stablecoin Explained

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**Publisher:** Decentralized Finance Publication (https://decentralized-finance.io)
**Author:** Decentralized Finance editorial team
**Reviewed by:** Kaiser Khan, Editor in Chief
**Category:** Stablecoins
**Updated:** Apr 23, 2026
**Trust:** Independent, ad-free editorial research. No display advertisements, no paid protocol coverage, no affiliate-driven rankings.

## Summary

mStable is a decentralized finance protocol operating on Ethereum that seeks to consolidate multiple stablecoins, lending capabilities, and liquidity provision under a unified framework. The protocol's initial product, mUSD, represents a fiat-pegged stablecoin designed to address market fragmentation.

mStable operates as a decentralized finance protocol on the Ethereum network with the objective of integrating stablecoins, lending services, and liquidity solutions into a cohesive standard. The protocol introduced mUSD as its first mAsset, which functions as a stablecoin pegged to fiat currency.

The developers behind mStable created the protocol to tackle several industry challenges, including the proliferation of competing assets with identical value targets, the absence of inherent yield opportunities in traditional stablecoins, and exposure to impermanent loss when accessing liquidity through decentralized exchanges like Uniswap.

## Introduction

The mStable protocol is designed to accommodate multiple mAssets, with each mAsset corresponding to a distinct underlying asset such as a fiat currency like the US Dollar or a digital asset like Bitcoin. These mAssets maintain their pegs through backing by an approved collection of tokenized assets sharing the same peg denomination, which remain under user control in a non-custodial arrangement.

The creation and redemption of mAssets occurs through permissionless, on-chain interactions executed via mStable's underlying smart contract infrastructure.

## Minting mUSD

The mStable protocol enables any participant to convert approved USD-denominated stablecoins, such as DAI, TUSD, USDT, and USDC, into mUSD at a one-to-one exchange rate. Users gain access to the protocol using a Web3-compatible wallet like MetaMask and can specify their desired mUSD quantity for minting.

Under certain conditions, users may be restricted from minting using a single stablecoin and instead must employ a combination of multiple approved assets. This restriction activates when an individual asset reaches its designated weight threshold or debt limit. These caps function as protective mechanisms for the protocol's stability in case of technical vulnerabilities. The mStable development team intends to eventually eliminate these constraints and expand minting capabilities to include additional crypto assets such as ETH.

The mStable protocol features a 'Save' functionality that enables users to generate a competitive annual percentage yield by depositing mUSD into the dedicated savings smart contract. The protocol aggregates returns from two sources: interest income generated through lending positions on protocols like Compound and Aave, and transaction fees collected from token exchanges conducted on the mStable platform. These combined revenue streams are designed to deliver above-market yield rates for mUSD savers.

## Swap

- Decentralized Finance terminology and concepts

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