What are gas fees?
Gas fees are the cost of executing operations on a blockchain. They compensate the network's validators (or miners) for the computational work of processing your transaction. Gas fees are paid in the blockchain's native token — BNB on BNB Smart Chain, ETH on Ethereum.
Why gas fees vary
Gas fees fluctuate based on network congestion. When many users are transacting simultaneously, fees rise because validators prioritise higher-paying transactions. During quiet periods, fees are minimal.
Ethereum vs BNB Smart Chain gas fees
This is one of the most important practical differences between chains:
| Chain | Typical gas fee | Speed |
|---|---|---|
| Ethereum | $5 – $50+ | 12 seconds |
| BNB Smart Chain | $0.01 – $0.10 | 3 seconds |
For DeFi users making frequent deposits and withdrawals, BNB Smart Chain's low fees make a significant difference to net returns.
How to minimise gas fees
- Use BNB Smart Chain instead of Ethereum for DeFi
- Transact during off-peak hours (weekends, early morning UTC)
- Ensure you always have a small BNB balance for fees