Gas fees are consistently lowest between 1am and 6am UTC on weekdays, and throughout weekends. Many professional traders schedule non-critical transactions for these windows to save 50-70% on gas. ETH Gas Station and Blocknative both show real-time and historical gas heatmaps to help identify the cheapest sending windows.
Layer 2 solutions like Arbitrum, Optimism, Base, and zkSync roll up multiple transactions and post a single proof to Ethereum mainnet. This reduces effective gas costs by 97-99%. According to Ethereum Foundation research from late 2024, these L2 solutions now handle the majority of all Ethereum ecosystem activity while charging users a fraction of mainnet fees.
Most wallets like MetaMask allow you to set custom gas fees. Set the max fee to just above the current base fee and add a small priority tip of 0.5-1 Gwei. This keeps your transaction valid while minimizing overpayment. For non-urgent transactions, setting a low priority fee and waiting for base fee to drop can save significant ETH over time.