How to avoid high gas fees

To save on blockchain gas fees, transact during off-peak hours, use alternative networks like Polygon or BSC, and adjust wallet gas settings manually.

Jul 14, 2025 at 04:42 am

Understanding Gas Fees in Blockchain Networks

In blockchain networks like Ethereum, gas fees refer to the cost users pay to execute transactions or smart contracts. These fees are calculated based on the computational power required for each operation. The gas price is determined by supply and demand; when more people use the network, gas prices rise. Understanding this mechanism is crucial for anyone looking to avoid high costs.

Gas fees are not fixed and can fluctuate significantly within minutes. Users must monitor these changes using tools like Etherscan or GasNow to make informed decisions about when to send transactions.

Choosing the Right Time to Transact

One of the most effective ways to reduce gas fees is to transact during off-peak hours. Network congestion plays a major role in determining gas prices. During periods of high activity—such as when new NFT drops or DeFi yield farming events occur—gas prices spike dramatically.

• Use gas tracking tools like ETH Gas Station or GasTracker to analyze real-time gas price trends.
• Schedule transactions during early morning hours (in UTC) when global network usage tends to be lower.
• Avoid weekends and holidays, as many traders and developers are active during these times.

Selecting Alternative Blockchains with Lower Fees

If avoiding high fees on Ethereum proves difficult, consider migrating to alternative blockchains that offer similar functionalities at a fraction of the cost. Chains like Binance Smart Chain (BSC), Polygon, and Avalanche have gained popularity due to their low transaction fees and fast processing times.

• Research decentralized applications (dApps) available on these chains before transferring assets.
• Use cross-chain bridges carefully to move funds between networks. Always verify bridge security and transaction costs.
• Maintain separate wallets for different chains to prevent accidental transfers to incompatible addresses.

Optimizing Transaction Parameters

When sending transactions on Ethereum or other EVM-compatible chains, users can manually adjust gas settings to potentially save costs. By default, wallets often suggest higher gas prices to ensure faster confirmations. However, users can tweak these values to suit their urgency levels.

• Set a custom gas limit in your wallet. Most standard transfers require around 21,000 gas units.
• Adjust gas price (Gwei) to a value slightly above the current average rather than paying premium rates.
• Use "slow" or "economic" options in wallets like MetaMask if you don’t need immediate confirmation.

Leveraging Layer 2 Solutions

Layer 2 scaling solutions such as Arbitrum, Optimism, and zkSync allow users to perform transactions off-chain while benefiting from the security of the underlying blockchain. These solutions drastically reduce fees by batching multiple transactions into one.

• Connect to supported dApps on Layer 2 platforms through compatible wallets like MetaMask or Argent.
• Bridge funds to Layer 2 via official portals provided by the solution’s team.
• Monitor withdrawal times as moving funds back to Layer 1 may take several hours or even days depending on the protocol.

Frequently Asked Questions

Q: What happens if I set too low a gas price?

A: If your transaction's gas price is below the network average, it may get stuck in the pending queue or rejected by miners. You can speed it up later by resubmitting with a higher gas price.

Q: Are gas fees refundable?

A: No, gas fees are non-refundable. Even if a transaction fails, the network still consumes computational resources to process it, so fees are charged accordingly.

Q: How do gas tokens work and can they help reduce costs?

A: Gas tokens like Chi or GST2 allow users to store gas when prices are low and use it later when prices are high. They act as a form of gas discount during peak times but require careful management.

Q: Can I cancel a transaction once submitted?

A: Yes, you can cancel a pending Ethereum transaction by sending another transaction with the same nonce and a higher gas price. This effectively replaces the original transaction.