ETH can feel expensive compared to alternatives. Solana charges ~$0.00025 per transaction; a basic ETH mainnet transfer during peak hours could cost $5–$50. Understanding when and why this happens empowers you to transact smarter.
The Core Reason: Scarce Block Space
Ethereum processes approximately 25–35 transactions per second on mainnet. Each 12-second block targets around 15 million gas units. When demand exceeds supply, users outbid each other with higher priority tips to get faster inclusion.
What Triggers Fee Spikes?
NFT Mints: Popular drops create thousands of simultaneous transactions.
Token Launches: New DeFi tokens generate rapid buy pressure.
Market Volatility: Sharp moves trigger liquidations and arbitrage bots.
Protocol Exploits: Users rush to withdraw during security incidents.
Is ETH Always Expensive?
No. In March 2026, Ethereum mainnet fees are at historically low levels — a standard transfer costs under $0.01. The widespread adoption of Layer-2 networks has significantly reduced mainnet congestion.
How to Avoid High ETH Fees
Check the gas tracker and transact during off-peak hours (2–8 AM UTC). Use Layer-2 networks for routine transfers and swaps. Set a max fee limit for non-urgent transactions. Batch multiple actions into a single smart contract call where possible.