What are crypto gas fees?

Gas fees are the payments required to execute transactions and compensate validators on the Ethereum blockchain. While these fees are essential for network functionality, they can sometimes be costly. However, over time, traders and blockchain users have developed practical tactics to help reduce their gas costs during times of high network congestion.

Ethereum gas fees are denominated in gwei, a fractional unit of ETH. Costs fluctuate based on network demand, such that when many users are transacting simultaneously, fees increase as demand for block space rises relative to the fixed supply. Conversely, during off-peak periods, fees tend to be lower when block space is more freely available.

Yes. When you trade on a centralised exchange, you're not interacting with the Ethereum network directly — the exchange handles that on your behalf. This means you typically won't see a separate gas fee for each trade. Instead, the exchange usually builds network costs into its own trading or withdrawal fees, batches transactions together to spread the cost across many users, or simply absorbs the fee itself. You'll usually only encounter an actual on-chain gas fee when withdrawing crypto from the exchange to an external wallet, since that's when a real transaction is broadcast to the blockchain.

Gas refers to the amount of computational power it takes to execute a transaction. Ethereum’s core developers designed the gas fee model so that the transaction fee would be determined using a fair method that’s not directly linked to the volatile price of ETH itself.

As such, the gas fee paid is calculated based on two main variables:

Within a margin, users can adjust the gas price they are willing to pay. Higher prices usually lead to faster processing, while lower prices may result in delayed transactions. Some actions, like sending ETH, require less gas than complex operations such as executing smart contracts or interacting with decentralized applications (dApps). If a transaction runs out of gas before completion, it fails, but the spent gas is not refunded.

In 2021, the Ethereum upgrade EIP-1559 introduced a new fee structure:

While EIP-1559 improved fee predictability, Ethereum fees can still remain high compared to competitor platforms.

Gas fees can add up, especially for frequent traders and dApp users. Here are five strategies to help you reduce your costs:

One of the best ways to manage crypto gas fees is by estimating them beforehand. Platforms such as Etherscan’s Gas Tracker or GasNow provide real-time gas price estimates. By checking these sources before making a transaction, you can adjust your gas price settings to avoid overpaying.

Some crypto wallets also offer built-in gas fee estimations, allowing users to choose between different transaction speeds with corresponding costs.

Since gas fees fluctuate based on network congestion, choosing the right time to transact can lead to significant savings for regular users. Ethereum’s network tends to be busiest during business hours in the U.S. and Europe, when dApp usage and trading volumes are high.

By contrast, late-night and early-morning hours (UTC time) typically see lower activity, resulting in reduced crypto gas fees. Tracking daily gas price trends can help you determine the optimal time to transact. Some gas tracker websites even offer historical fee data to identify patterns.

Certain decentralized finance (DeFi) platforms offer gas fee reimbursement or fee discount programs to attract users. For example, Balancer provides refunds on gas fees in its native token when trading on its platform. Similarly, dYdX and other DeFi protocols have previously run promotions that reduce or eliminate gas fees for specific transactions.

Before executing trades or interacting with DeFi platforms, research whether they offer gas incentives. Some projects may also cover gas costs for new users to encourage take-up.

Ethereum’s Layer 2 (L2) scaling solutions offer a cost-effective alternative to transacting on the base layer. L2 platforms, such as Arbitrum and Optimism, bundle multiple transactions together before submitting them to Ethereum’s mainnet, significantly reducing fees.

By using L2 solutions, it’s possible to interact with Ethereum dApps with lower gas costs. Many DeFi platforms now support L2 networks, making it easier to transact on-chain at a fraction of the usual cost.

If you’re looking for even lower fees, consider using alternative Layer 1 blockchains such as Solana or Avalanche. These networks typically offer faster transactions with significantly reduced costs compared to Ethereum.

For instance, Solana transactions typically cost a fraction of a cent, making it an appealing option for frequent traders. While Ethereum remains the most popular smart contract platform, exploring other networks can be beneficial if you prioritize lower costs.

Disclosures:

Content provided for educational purposes only. Not investment advice or a recommendation. Trading and owning digital assets involves significant risk, including the risk of substantial loss. Cryptocurrency services are offered through an account with Robinhood Crypto, LLC (NMLS ID 1702840). Robinhood Crypto is licensed to engage in virtual currency business activity by the New York State Department of Financial Services. Cryptocurrency held through Robinhood Crypto is not FDIC insured or SIPC protected.