Impact of Ethereum's Berlin Upgrade

Last reviewed: September 16, 2026

The Impact of Ethereum's Berlin Upgrade refers to the changes and improvements made to the Ethereum blockchain network following the implementation of the Berlin upgrade. This upgrade, which took place in April 2021, introduced several Ethereum Improvement Proposals (EIPs) aimed at optimizing gas costs, enhancing transaction efficiency, and improving the overall security of the network. These changes have significant implications for various stakeholders, including developers, users, and stablecoin issuers like Tether (USDT). Understanding the Berlin upgrade's impact is crucial for comprehending its role in the broader cryptocurrency ecosystem.

Overview

The Ethereum Berlin upgrade is a network update that was activated on April 15, 2021. It introduced several Ethereum Improvement Proposals (EIPs) designed to optimize the network's performance and security. The upgrade aimed to reduce transaction fees, improve the efficiency of smart contracts, and enhance the network's overall security. These changes have had a notable impact on the Ethereum blockchain, influencing how developers build decentralized applications (dApps) and how users interact with the network. The Berlin upgrade is part of Ethereum's ongoing efforts to transition to Ethereum 2.0, which promises to deliver a more scalable and sustainable blockchain infrastructure.

How it works

The Berlin upgrade incorporated four main EIPs: EIP-2565, EIP-2929, EIP-2718, and EIP-2930. Each of these proposals introduced specific changes to the Ethereum network:

- EIP-2565: This proposal reduced the gas cost for the ModExp (modular exponentiation) precompile, making certain cryptographic operations cheaper and more efficient. This change aimed to encourage developers to use more complex cryptographic functions in their smart contracts without incurring prohibitive costs.

- EIP-2929: This proposal increased the gas cost for certain state access operations. By doing so, it aimed to mitigate denial-of-service (DoS) attacks that exploit low gas costs to overload the network. This change improved the network's security and resilience against such attacks.

- EIP-2718: This proposal introduced a new transaction type that allows for easier implementation of future transaction logic changes. By standardizing transaction types, EIP-2718 paved the way for more flexible and adaptable transaction structures in the future.

- EIP-2930: This proposal introduced optional access lists, which allow users to specify which addresses and storage keys a transaction will access. This feature helps users estimate gas costs more accurately and reduces the risk of unexpected transaction failures due to gas limitations.

Applications

The Berlin upgrade has several applications and implications for the Ethereum network and its users:

- Smart Contracts: The reduction in gas costs for certain operations encourages developers to create more complex and efficient smart contract applications. This can lead to the development of more sophisticated decentralized finance ([DeFi) platforms](/wiki/decentralized_finance_defi_platforms) and other dApps.

- Transaction Efficiency: By optimizing gas costs and introducing access lists, the Berlin upgrade improves transaction efficiency and predictability. Users can better estimate the gas fees required for their transactions, reducing the likelihood of failed transactions due to insufficient gas.

- Security Enhancements: The increase in gas costs for state access operations helps protect the network from DoS attacks, enhancing the overall security and stability of the Ethereum blockchain.

Relationship to USDT

Tether (USDT), a widely used stablecoin, is issued on multiple blockchain networks, including Ethereum. The Berlin upgrade impacts USDT transactions on the Ethereum network in several ways:

- Transaction Costs: The optimization of gas costs can lead to reduced transaction fees for USDT transfers on the Ethereum network. This makes it more cost-effective for users to transact with USDT, enhancing its utility as a medium of exchange.

- Transaction Speed: Improvements in transaction efficiency and predictability can result in faster and more reliable USDT transactions. This is particularly important for users who rely on USDT for timely cross-border payments and other financial activities.

- Security: Enhanced network security reduces the risk of transaction disruptions and potential losses for USDT holders. This contributes to the overall stability and reliability of USDT as a stablecoin.

Advantages and disadvantages

The Berlin upgrade offers several advantages and disadvantages for the Ethereum network and its users:

Advantages

- Reduced Gas Costs: By lowering the gas costs for certain operations, the Berlin upgrade makes it more affordable for developers to create complex smart contracts and for users to transact on the network.

- Improved Security: The increase in gas costs for state access operations helps protect the network from DoS attacks, enhancing its security and resilience.

- Enhanced Transaction Efficiency: The introduction of access lists and standardized transaction types improves transaction efficiency and predictability, reducing the likelihood of failed transactions.

Disadvantages

- Increased Complexity: The introduction of new transaction types and access lists may increase the complexity of the Ethereum network, requiring developers and users to adapt to new standards and practices.

- Potential for Higher Costs: While the Berlin upgrade reduces gas costs for some operations, it increases costs for others, which may result in higher overall transaction fees for certain use cases.

- Transition Challenges: As with any network upgrade, the transition to the Berlin upgrade may present challenges for developers and users, including the need to update software and adapt to new protocols.

Sources

- CoinDesk.com)
- CoinTelegraph
- Tether
- Ethereum Foundation Blog