MetaMask Swap Review 2026: In-Wallet DEX Aggregation and Fees

MetaMask Swap is the built-in token exchange feature of the MetaMask wallet, which was created by Consensys in 2016 as open-source software. It lets you swap tokens on the same network without opening a separate decentralized exchange.

The feature was introduced in October 2020 as a way to get the best prices across several DEXs from within the wallet. Early sources named Kyberswap, 1inch and Uniswap among them. MetaMask's own description of the product is to access, store and swap tokens from a self-custodial wallet.

The tradeoff is convenience against cost and reach. A built-in service fee, reported at 0.875% by one guide, applies on top of gas. Swaps stay within one network, so cross-chain trades and pairs such as ETH to BTC are not covered.

You pick two tokens on the same network and an amount. MetaMask asks several decentralized exchanges and aggregators for quotes and shows a route that is meant to give a competitive price. A decentralized exchange is a set of smart contracts that swap tokens against liquidity pools, with no order book or account.

When you confirm, you sign a transaction from your wallet. The contract executes the trade on the blockchain and the new tokens arrive in the same wallet. You pay network gas, plus MetaMask's service fee, which one guide reports as 0.875%. Because it is on-chain, a trade can fail if the price moves past your slippage limit, and gas may still be spent.

Swaps only work within one network. A forum discussion notes that you cannot make a cross-chain swap this way, and a user reports that ETH to BTC is not supported. For that you need a bridge or another service.

You pay the network gas fee for the chain you swap on, plus a MetaMask service fee. One fee guide reports this MetaMask fee at 0.875%. It also mentions gasless swaps and notes that failed swaps can still cost gas.

The exact fee, any slippage setting and the gas estimate are shown in the swap quote before you confirm, so that is where you should check the all-in cost. No fixed fee table is published in the material reviewed here.

MetaMask is self-custodial: you hold the keys, and funds are not on a MetaMask exchange account. This removes counterparty risk from a custodian, but it puts the burden of securing the recovery phrase on you. Phishing sites, fake tokens and malicious signature requests are the usual ways users lose funds, so verify token addresses and read every prompt.

Swaps execute through third-party DEX smart contracts, which carry their own contract and liquidity risk. Audit details for the swap routing are not given in the material reviewed here. One fee-and-risk guide also references a US SEC case relating to the swap feature, so regulatory status is worth checking in your own jurisdiction. Using a hardware wallet such as Ledger adds a layer of protection for signing.

MetaMask Swap is for people who already use the MetaMask wallet and want simple swaps on Ethereum or BNB Smart Chain without learning a separate DEX interface. It is less suited to cost-sensitive traders making large or frequent swaps, and to anyone needing cross-chain moves or assets like BTC.