Ethereum EIP-7976 reaches its calldata pricing review deadline

A review deadline without automatic activation

EIP-7976 reaches the Last Call deadline shown in its official document on November 1, 2026. Created on June 18, 2025, by Toni Wahrstätter, it addresses the pricing of data attached to Ethereum transactions, known as calldata. The consulted text remains in Last Call: the deadline establishes neither final adoption nor mainnet activation. It is a technical review milestone rather than an immediate change to users’ bills.

The objective is to constrain block size when transactions carry substantial data but perform little computation. The proposal extends the floor-pricing mechanism introduced by EIP-7623. Reducing those extreme cases would create technical headroom for possible gas-limit increases. The document alone announces neither an actual increase in that limit nor a deployment schedule.

A uniform floor of 64 gas per byte

The proposed change would raise the floor from 10 or 40 gas per byte, depending on whether its value is zero or nonzero, to 64 gas in both cases. This minimum differs from standard data pricing, which remains 4 or 16 gas per byte. The formula takes the maximum of a component combining data and execution and a component based on the new floor. Transactions involving sufficient computation can therefore continue to fall under the first component.

To illustrate the intended effect, the author uses a hypothetical 45-million-gas limit: the maximum size of a data-heavy payload would fall from approximately 1.07 to 0.67 megabytes, a reduction of about 37%. This is a sizing example rather than a measurement of all current blocks. The text also cites a historical analysis under which 1.5% of transactions between September 2024 and September 2025 would have been affected. That share does not guarantee the outcome for different future usage.

Wallets and nodes would need adjustments

A transaction’s gas limit would have to cover both its applicable floor and its intrinsic cost, taking the higher requirement. An estimate that is too low could make the transaction invalid. Wallet developers and RPC service operators would therefore need to update gas estimation, particularly around eth_estimateGas. The intended reduction in maximum size does not mean all transactions would become cheaper or every user would face the same increase.

The document states that this repricing would be incompatible with earlier rules and would require a scheduled network upgrade. It also retains the transaction-bundling considerations already discussed in EIP-7623. For users, the practical issue is a discussion of data constraints and estimation, separate from activation. The November 1 deadline should be followed through official status changes, without turning an older technical proposal into a launch announced today.