Gas Fees: Why They Spike and How to Pay Less
Gas is what you pay to have a transaction included in a block. It is not a fee set by the network — it is a bid in an auction for scarce space.
Why it spikes
Demand is bursty. A hyped mint, a liquidation cascade, or an airdrop claim can push thousands of transactions into the same minute. Block space does not expand, so price does.
Ethereum mainnet has hit hundreds of dollars per transaction during those moments. That is the mechanism working as designed, not a malfunction.
The four ways to pay less
- Move to a layer 2. Arbitrum, Base and Optimism settle to Ethereum for a fraction of the cost.
- Time it. Fees follow a weekly rhythm — weekends and off-hours are cheaper.
- Batch your actions. One transaction that does five things costs less than five transactions.
- Set a limit. Wallets let you cap what you'll pay. If the cap isn't met, the transaction waits or fails instead of overcharging you.
The mistake to avoid
Do not crank up the fee "just to make it go through" on a transaction you can do tomorrow. The urgent ones are almost never actually urgent.