Ethereum’s upcoming Glamsterdam upgrade could force wallets and transaction infrastructure to rethink one of the network’s longest-standing assumptions: the 21,000-gas base cost for transactions.
The change comes through EIP-2780, which proposes replacing the flat 21,000-gas charge with separate costs based on the resources a transaction actually uses. The proposal remains under consideration for Glamsterdam, which Ethereum currently targets for the second half of 2026.
Why 21,000 Gas Is Changing
Today, a standard ETH transfer between existing accounts requires 21,000 gas. Wallets, gas estimators and transaction builders have built their logic around that figure for years.
EIP-2780 would break the constant into several components. A simple zero-value transaction could require only 15,000 gas, while a self-transfer could fall to 12,000.
However, an ordinary ETH transfer to an existing account would still total 21,000 gas under the current proposal. The bigger change comes when a transaction creates a new account.
Such transfers would face a separate state-gas charge because Ethereum must permanently store the new account. The current specification assigns about 183,600 state gas to that operation.
Wallets Face New Gas-Estimation Challenges
The change matters because wallets can no longer treat 21,000 as a universal minimum for transaction validity.
Ethereum’s proposal separates intrinsic gas, which determines whether a transaction can enter a block, from runtime charges that depend on the state touched during execution. That distinction could require updates across wallets, RPC providers, gas estimators and account-abstraction infrastructure.
The impact also extends to ERC-4337 bundlers. Ethereum’s state-gas model means applications that rely on gasleft to measure sub-operation costs may no longer capture every charge accurately.
Glamsterdam is also pursuing broader changes, including Block-Level Access Lists and higher block gas limits. Together, those changes aim to make Ethereum more capable of processing transactions in parallel while keeping network resources sustainable.
For everyday users, the transition should remain largely invisible if wallet software receives the necessary updates. For developers, however, the familiar 21,000-gas rule is becoming a less reliable assumption as Ethereum moves toward a more granular pricing model.
