The Metamask GAS fee is so much expensive than estimatedGas by Web3js

hi!
It’s our first time working with metamask for our Web3js project.

We are observing that the commissions charged by Metamask in a single function (send Ether to the contract) of our solidity contract is more than double the estimated with the web3js estimategas function.

Why this occurs? This is the fee of using your software?

Thank you.

Hey @JTorres, we don’t receive your gas fees. Those are paid to the miners of the Ethereum blockchain. We don’t profit from it at all.

We get our gas estimates from gasnow.org, which tends to be the most accurate gas estimation service because they use real-time data from their own mining pools. Under estimating the gas amount will cause transactions to fail and results in a very negative customer experience.