Why Does MetaMask Show a High Gas Fee When the Network Is Not Congested?

28 September 2026

Yes, MetaMask can display a gas fee that seems too high for current network conditions, but the issue is usually not the app lying about congestion. Instead, the problem is often one of several specific settings or account configurations that override the default fee estimation. This page explains why that happens and what to do about each cause.

How metamask estimates gas fees

MetaMask estimates gas fees by polling public Ethereum (or other network) gas price oracles. For Ethereum, it uses the EIP-1559 fee market mechanism: a base fee (set by the protocol based on network congestion) plus a priority fee (a tip to validators). The wallet shows a low, medium, and high estimate. When the network is genuinely quiet, these numbers should be low - often under 10 gwei for the base fee on Ethereum. If you see a number like 50 or 100 gwei on a calm day, something else is at work.

Common causes and fixes

1. You Are On the Wrong Network

This is the most frequent reason. MetaMask shows fees in the native token of the network you have selected. If you are on Ethereum Mainnet but think you are on a Layer 2 (like Arbitrum or Optimism), the fees will look high because Ethereum mainnet fees are higher. Similarly, if you are on a testnet, fees may be artificially low or high.

Fix: Check the network selector at the top of the MetaMask window. Ensure it matches the network you intend to use. If you see “Ethereum Mainnet” and expected a cheaper chain, switch to the correct one.

2. The Transaction Is Complex (High Gas Limit)

Gas fees are calculated as: gas price (gwei) × gas limit (units). The gas limit is the amount of computational work the transaction needs. A simple ETH transfer uses 21,000 gas. A smart contract interaction - like swapping tokens, minting an NFT, or interacting with a DeFi protocol - can use 100,000 to 300,000 gas or more. Even with a low gas price, a high gas limit multiplies the total fee.

Fix: Check the “Gas Limit” field in the MetaMask confirmation screen. If it is unusually high (e.g., 500,000+ for a simple swap), the dapp you are using may have set a default that is too generous. You can manually reduce the gas limit, but only if you understand the contract’s actual needs. For most users, the safe approach is to use the “Market” or “Low” fee option in MetaMask and accept the limit the dapp provides.

3. You Have a Stuck or Pending Transaction

If you have a previous transaction that is still pending (not yet confirmed), MetaMask may assume you want the new transaction to be processed quickly - and it can raise the fee estimate to try to get both through. This is especially common if the stuck transaction was itself set with a low gas price.

Fix: Go to the MetaMask activity tab and look for any pending transactions. If one exists, you can either: - Cancel it: Click on the pending transaction, then “Cancel.” This sends a new transaction with the same nonce and a higher gas price to replace the stuck one. - Speed it up: Click “Speed Up” to increase the gas price on the stuck transaction, which may clear it quickly. - Wait: If the network is not congested, most pending transactions confirm within minutes. Wait a few minutes and then try your new transaction.

4. You Are Using a Custom Gas Price That Is Too High

You or a previous dapp might have set a custom gas price that MetaMask is now remembering. The wallet allows you to manually override the suggested fee. If that override is still active, it will persist across transactions.

Fix: In the MetaMask confirmation screen, click “Edit” next to the gas fee. Select one of the preset options (Low, Market, or Aggressive). If you have previously set a custom value, switch back to a preset. The Low option typically uses the current base fee plus a minimal priority fee.

5. The Dapp You Are Using Has a Hardcoded High Fee

Some decentralized applications set their own gas fee defaults, often to ensure reliable execution. This is common with NFT minting sites or token launchpads that expect high demand. Even if the network is quiet, the dapp’s interface may force a higher gas price.

Fix: Before confirming, edit the gas fee in MetaMask down to a reasonable level for current conditions. You can check current gas prices on a site like Etherscan’s gas tracker (do not rely on a single source). If the dapp rejects your lower fee, it may require a minimum tip - then you must decide whether to pay it or use a different dapp.

6. Your Account Is a Smart Contract Wallet

If you are using a smart contract wallet (like a multisig or a wallet that requires a “relay” transaction), the gas costs are higher because the transaction involves extra contract calls. This is not common with standard MetaMask accounts, but it can happen with certain integrations.

Fix: If you are using a smart contract wallet, the higher fee is expected and not a bug. You can reduce it only by using a different type of wallet or waiting for the network to be even less congested.

Quick Diagnostic Steps

1. Check network name - Are you on the right chain?
2. Check gas limit - Is it normal for the type of transaction?
3. Look for pending transactions - Clear them first.
4. Reset to default fee - Use the Low preset.
5. Try a different dapp - See if the fee is the same elsewhere.

If none of these work, the fee you see may actually be correct for current conditions. Network congestion can be local: a sudden spike in demand for a specific token or contract can raise gas prices temporarily, even if the rest of the chain seems quiet. In that case, wait 10 - 15 minutes and try again.

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