How to Set Up MetaMask on a Layer 2 in 2026

MetaMask can connect to Ethereum Layer 2 networks such as Arbitrum One, Optimism and Base. You can use them for supported apps and transactions while keeping your wallet, but you must switch MetaMask to the network where your assets and the app are located.

Layer 2 fees are generally lower than comparable Ethereum mainnet fees, but they are not zero or fixed. You may still pay a fee to move funds from Ethereum to a Layer 2, and moving funds back can also cost money. Network conditions, the transaction and the route you use all affect the total.

Before you start, decide which network the app or person you are dealing with requires. Then check that your wallet, asset and destination all support that same network. A token balance on Ethereum mainnet does not automatically appear on Arbitrum or another Layer 2. MetaMask shows accounts across networks, but those networks maintain separate balances.

Choose a network based on the app or recipient you need to use—not just the lowest advertised fee. Arbitrum One, Optimism and Base are examples of Ethereum Layer 2 networks compatible with MetaMask. Check that the specific app supports your chosen network and that it accepts the asset you plan to use.

Compare these points before adding one:

• Compatibility: Does the app or exchange support this exact network?
• Funding: Can you withdraw the asset directly there, or will you need a bridge?
• Fees: What will the transaction and any transfer into or out of the network cost?
• Exit needs: Will you need to return funds to Ethereum soon? Some routes take longer than others.

There is no universal best Layer 2. A network with a cheaper transaction may not be useful if your app, token or exchange does not support it. Do not choose a network solely because it appears in a wallet menu; check that it fits the transaction you intend to make.

Use MetaMask’s built-in network list when possible. The exact labels can change between the browser extension and mobile app, but the process is generally similar:

1. Open MetaMask and unlock your wallet.
2. Open the network selector at the top of the wallet.
3. Choose the option to add or explore networks.
4. Find the network you want, review its details and select Add or Connect.
5. Switch to that network and confirm its name in the wallet before proceeding.

If the network is not listed, only add it manually using network details from the network’s official documentation. Check the network name and chain ID carefully. A wrong or malicious RPC endpoint can show misleading information or interfere with how you interact with the network. Never paste your recovery phrase into a website or give it to anyone claiming to help configure a network.

Adding a network changes which blockchain MetaMask is connected to; it does not transfer assets, create a new account or guarantee that a token is supported.

You need funds on the Layer 2 before you can use most apps there. For ordinary transactions, ETH is usually the network’s gas token. If you want to move another token, check that it is supported on the destination network and that you also have enough ETH there to pay fees.

You have two common funding routes:

• Withdraw from an exchange: If your exchange supports withdrawals to the specific Layer 2, choose that exact network and check its withdrawal fee and minimum. Confirm the receiving address and network before submitting.
• Bridge from Ethereum: A bridge transfers supported assets between networks. This usually requires a transaction on Ethereum, so you may pay mainnet gas to start the transfer as well as any bridge or destination-network costs.

Do not assume that selecting ETH means the same thing across every network. Check the network shown for the asset and the destination before confirming. If you are unfamiliar with the route, try a small transfer first, while accounting for minimum withdrawal amounts and fees.

A bridge is useful when your funds are already on Ethereum or when an exchange cannot send them directly to your chosen Layer 2. It adds another step and another smart contract or service to assess, so check the route, supported assets, quoted amount and fees before signing.

For an Arbitrum transfer, the Arbitrum Bridge is a direct option for supported assets. Moving assets from Ethereum to Arbitrum requires an Ethereum transaction, which can incur mainnet gas. Withdrawing from Arbitrum One to Ethereum through the canonical bridge typically takes around seven days. If you need faster access on mainnet, check the terms, route and risks of any alternative before using it.

A bridge quote is not a promise that the transfer is free or riskless. Check that the destination network is correct, read any warnings, and avoid approving an unlimited token allowance if the wallet gives you a choice. Never follow unsolicited messages offering to “fix” a delayed bridge transfer or asking for your recovery phrase.

Once your funds arrive, confirm the network selector shows the Layer 2 you intended to use. If a token is missing from the asset list, do not assume the transfer failed: the token may not be displayed automatically. Verify the token’s contract address using a trusted source for that network before adding it to the wallet.

Before approving a transaction:

• Check the app’s network and the wallet’s selected network match.
• Review the recipient, token, amount and estimated fee in MetaMask.
• Make sure you have enough of the network’s gas token for the transaction.
• Check any token approval separately from the swap or app action that follows it.
• Reject requests you do not understand or did not initiate.

Layer 2 fees can rise when activity increases, and complex actions may cost more than a simple transfer. Review the estimate before signing rather than assuming the fee will stay low. If the estimate seems unexpectedly high, pause and check the network, transaction and app before trying again.

Avoid these common mistakes when using MetaMask on a Layer 2:

• Sending to the wrong network: The same wallet address may be used across EVM networks, but assets do not move between them just because the address matches. Check the sending and receiving networks.
• Forgetting gas funds: A token balance alone may not be enough to make a transaction. Keep some of the network’s gas token available.
• Ignoring the bridge cost: Moving onto a Layer 2 may require Ethereum mainnet gas or a separate service fee, so compare the full route cost.
• Rushing a signature: Read transaction details and token approvals. A familiar wallet interface does not make an unknown app trustworthy.
• Expecting instant withdrawals: Some routes, including the canonical Arbitrum withdrawal to Ethereum, can take around seven days.

Keep your recovery phrase offline and private. MetaMask support, a bridge operator or an app should never need that phrase to complete a transfer. If a transaction is pending or delayed, check its status through the relevant wallet or network tools rather than signing a new request sent by a stranger.