Ethereum Gas Fees Explained: How They Work and Tips to Save
Gas Fees = Transaction Fees
Gas fees are what we pay to move anything on the blockchain: sending crypto, minting NFTs, swapping tokens, or performing any on-chain action.
It can be low or extremely high depending on two things:
Network congestion: how busy the network is at the moment.
Transaction complexity: simple transfers cost less than complex smart contract interactions.
Why Gas Fees Exist
Gas fees are the incentives paid to validators: the people (nodes) who verify and confirm transactions before they are added to the blockchain.
When you send cryptocurrency, your transaction first goes into a waiting pool called the mempool. Validators then pick transactions from the mempool, verify them, include them in a block, and secure the block with a unique hash. If this is confusing, check out my article on blockchain
Without gas fees, no one would have a reason to verify transactions, and the blockchain would not function securely. So, as frustrating as gas fees can be, they are what keep the system safe, decentralized, and efficient.
How to Pay Lower Gas Fees
Although gas fees can be expensive, there are a few ways to ensure you pay as little as possible.
1. Use Etherscan to Check Network Activity
Etherscan shows how busy the Ethereum network is at any moment. When the network is less busy, gas fees are lower. Before making any transaction, check Etherscan to find the best time to transact and save on gas fees.
You can also verify transactions, mint NFTs, and explore other features directly from Etherscan.
2. Use Layer 2 Networks
Layer 2 blockchains such as Base, Arbitrum, and Optimism help reduce gas costs.
Instead of paying high transaction fees directly on Ethereum, Layer 2 networks allow you to perform the same actions for much less. They handle transactions faster and cheaper off the main Ethereum network, then update the main blockchain later.
Why You Still Need ETH on Layer 2 Networks
If you want to send a token, for example USDC on the Base network, you might wonder why you still need to have ETH on Base.
Why can’t the gas fees be taken from your USDC instead?
This is because all validators only accept payment in ETH. It is the native currency that rewards them for securing the network.
So, before using any Layer 2 network, make sure you have some ETH on that network, or your transactions will not go through.
Summary
Gas fees keep blockchains secure.
Paid to validators as incentives.
Check Etherscan to avoid high fees.
Layer 2 networks make transactions cheaper and faster.
Always keep some ETH on the network you’re using.
© TheHuskyDev, 15th October 2025. All Rights Reserved.
