How to customize gas settings

For every transaction you send in MetaMask, you'll need to pay gas. For a general explainer, see here.

You can easily customize the gas you pay for each transaction according to your circumstances. For example, sometimes you may want to pay more to help your transaction be processed sooner; other times, you may be happy to wait. 

First, let's define the various terms you'll encounter when customizing gas settings:

The gas limit
The gas limit is the maximum amount of gas units you are willing to pay for in order to carry out a transaction or EVM operation.
The max priority fee
The max priority fee goes to the validator, and incentivizes them to prioritize your transaction.
The max fee
The max fee is the total, global amount paid for your transaction: base fee + priority fee.

Remember that gas you pay is not charged or collected by MetaMask, and not something we can control. 

Extension Mobile

Using an older version of MetaMask Extension?

These instructions apply to v10.29.0 or newer. In versions older than v10.29.0, you may need to first turn on 'Advanced gas controls' in settings.

When you start to send a transaction, you'll see an icon above your gas details. This will likely read 'Low', 'Market, or 'Aggressive' depending on the last setting you used: 


Clicking on this button will allow you to choose between these three options. These describe the amount of gas you're choosing to pay, and have these main implications:

  • 'Low' involves paying less for gas, and most likely waiting longer for your transaction to complete.
  • 'Market' sets your gas to reflect the current market rates.
  • 'Aggressive' enables you to be more forceful with your transaction, and have it completed as soon as possible by paying more.

MetaMask edit gas fee

Hit 'Advanced' to customize gas parameters directly. 


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