If youve ever tried to make an Ethereum transaction and been asked for $20-50 in fees, youve experienced gas fees. Understanding them is essential to using DeFi without going broke.

What are Gas Fees

Gas fees are the commissions you pay to validators for processing your transaction on a blockchain. They are like a "toll" you pay to use the network.

How They Work on Ethereum

Every operation on Ethereum consumes a certain amount of "gas" (computation unit). Total cost is:

Gas used × Gas price (in Gwei)

• Simple transfer: ~21,000 gas
• Uniswap swap: ~150,000 gas
• Complex swap with approval: ~250,000+ gas

Gas price varies with network congestion. During high demand, it can spike dramatically.

Gas Fees Across Networks

How to Reduce Gas Fees

1. Use Layer 2s

Arbitrum, Base, Optimism — same Ethereum security but 10-100x cheaper. Send from Binance or Coinbase directly to L2.

2. Trade During Low Congestion

Weekends and early mornings (EU/US time) usually have cheaper gas.

3. Manually Adjust Gas

Rabby Wallet lets you adjust gas price. For non-urgent transactions, lower the gas and wait longer.

4. Use Solana

For operations where speed matters and fees must be minimal, Solana is unbeatable.

5. Batch Operations

Instead of 5 small transactions, batch into one if possible.

EIP-1559 and ETH Burning

Since 2021, part of every gas fee is "burned" (destroyed), reducing ETH supply. This makes Ethereum potentially deflationary when network activity is high.

Conclusion

Gas fees are the cost of decentralization. For most users, the solution is simple: use Layer 2s like Arbitrum or Base. You get Ethereums security at a fraction of the cost.