How to calculate Ethereum fee after EIP-1559? How to save?

EIP-1559 changed Ethereum fees: now, total fee = (base fee + priority fee) * gas used. Save by timing transactions and using Layer 2 solutions.

May 09, 2025 at 08:01 am

The introduction of EIP-1559 in August 2021 brought significant changes to the Ethereum network's fee structure, revolutionizing how users interact with transaction costs. This article will delve into the specifics of how to calculate Ethereum fees post-EIP-1559 and offer strategies to save on these fees.

Understanding EIP-1559 and its Components

EIP-1559 fundamentally changed the way Ethereum transaction fees are calculated. Before its implementation, users paid a single "gas price" that covered both the base fee and the miner's tip. Now, the fee structure is divided into two main components:

• Base Fee: This is the minimum amount required to process a transaction on the Ethereum network. The base fee is burned, meaning it is removed from circulation, which can help in reducing the overall supply of Ether over time. The base fee adjusts dynamically based on the network's congestion level.
• Priority Fee (Miner's Tip): This is an optional amount that users can add to their transaction to incentivize miners to include it in the next block. The priority fee goes directly to the miner and is not burned.

How to Calculate Ethereum Fees Post-EIP-1559

To calculate the total fee for an Ethereum transaction after EIP-1559, you need to add the base fee and the priority fee. Here’s how you can do it:

• Step 1: Determine the current base fee of the Ethereum network. This information is readily available on blockchain explorers like Etherscan. The base fee changes with each block based on the network's congestion.
• Step 2: Decide on the priority fee you want to add. This can be zero if you are willing to wait longer for your transaction to be processed, or a higher amount if you need your transaction to be processed quickly.
• Step 3: Calculate the total gas used for your transaction. This depends on the type of transaction you are making (e.g., simple transfer, smart contract interaction).
• Step 4: Multiply the total gas used by the sum of the base fee and the priority fee to get the total transaction fee.

Here’s an example:

• Base Fee: 100 Gwei
• Priority Fee: 2 Gwei
• Gas Used: 21,000

Total Fee = (Base Fee + Priority Fee) Gas Used
Total Fee = (100 + 2) 21,000 = 102 * 21,000 = 2,142,000 Gwei

Strategies to Save on Ethereum Fees

Saving on Ethereum fees involves understanding the dynamics of the network and making informed decisions about when and how to transact. Here are some strategies to help you minimize your costs:

• Timing Your Transactions: Ethereum fees can fluctuate significantly based on network congestion. Monitor the network's activity and try to send transactions during periods of lower activity to benefit from lower base fees.
• Adjusting the Priority Fee: If you are not in a hurry, you can set the priority fee to zero or a very low amount. This might result in a longer wait time, but it can significantly reduce your total transaction cost.
• Using Layer 2 Solutions: Layer 2 scaling solutions like Optimism, Arbitrum, and Polygon can help you save on fees by processing transactions off the main Ethereum chain. These solutions then settle transactions back on the Ethereum network, often at a much lower cost.
• Batching Transactions: If you need to make multiple transactions, consider batching them into a single transaction. This can reduce the overall gas cost compared to sending multiple separate transactions.

Tools and Resources for Fee Estimation

Several tools and resources can help you estimate and manage Ethereum fees effectively:

• Etherscan: This blockchain explorer provides real-time data on the Ethereum network, including the current base fee and average priority fees.
• Gas Now: A tool that offers gas price recommendations to help you optimize your transaction fees.
• MetaMask: This popular Ethereum wallet includes a feature that suggests optimal gas prices based on current network conditions.

Practical Example: Sending an Ethereum Transaction

Let's walk through a practical example of sending an Ethereum transaction using MetaMask, considering the new fee structure:

• Step 1: Open MetaMask and click on "Send".
• Step 2: Enter the recipient's Ethereum address and the amount you want to send.
• Step 3: Click on "Edit" next to "Gas Fee". Here, you'll see the "Estimated Base Fee" and can adjust the "Priority Fee (Tip)" according to your urgency.
• Step 4: Review the "Max Fee" and "Max Priority Fee" settings. The "Max Fee" is the maximum amount you are willing to pay for the transaction, while the "Max Priority Fee" is the maximum tip you are willing to pay to the miner.
• Step 5: Adjust these values based on your strategy to save on fees. If you're not in a hurry, you can set a lower "Max Priority Fee".
• Step 6: Confirm the transaction details and click "Confirm" to send the transaction.

Frequently Asked Questions

Q1: Can I set the priority fee to zero and still have my transaction processed?

Yes, you can set the priority fee to zero, but it may take longer for your transaction to be processed. Miners prioritize transactions with higher priority fees, so setting it to zero means your transaction might wait longer in the mempool.

Q2: How does the base fee burning affect the Ethereum supply?

The base fee burning mechanism removes a portion of the Ethereum supply from circulation with each transaction. This can lead to a deflationary effect on the total supply of Ether over time, depending on the volume and value of transactions.

Q3: Are there any risks associated with using Layer 2 solutions to save on fees?

While Layer 2 solutions can significantly reduce fees, they come with their own set of risks, such as potential security vulnerabilities and the need to bridge funds back to the main Ethereum chain, which can introduce additional complexity and costs.

Q4: How often does the base fee change on the Ethereum network?

The base fee on the Ethereum network changes with each block, which is approximately every 13-15 seconds. This dynamic adjustment helps maintain a consistent block size and manage network congestion.