Glamsterdam Upgrade: Date, Hoodi Delay and What Changes for ETH Holders

Glamsterdam gas cost calculator

How much your usual transactions would cost before and after the repricing, at the same gas price. It starts at today’s ~0.06 gwei and $2,329 ETH; press “Use live gas price” for the current network fee.

Gas changes by transaction type

Three EIPs reprice gas. EIP-2780 splits the flat 21,000 base into parts (12,000 for the sender, 3,000 to touch the recipient, 6,000 to move value). EIP-8037 charges 1,530 gas per byte of new state, metered as separate “state gas” that still counts toward your fee. EIP-8038 raises the cost of reading and writing existing state. All three are in Last Call (deadline November 1, 2026), so values can still change.

Token rows are our model of a simple ERC-20 transfer without a proxy (two balance reads, two writes, 632 gas of calldata and ~3,000 gas of other work); real tokens such as USDC use a proxy and cost more in both columns, but the change is similar. A fee is gas × gas price × ETH price: at ~0.06 gwei and $2,329, 21,000 gas is $0.0029 and 204,600 gas is $0.03. Watch how fees move day to day on our live gas tracker.

What Glamsterdam changes for ETH holders

• You do nothing. Balances, keys and addresses carry over. The EF says “no action is required from Ethereum mainnet users or ETH holders”. Treat any “Glamsterdam migration”, airdrop or wallet-validation request as phishing (see our Scam Watch).
• First sends to fresh addresses cost more. Withdrawing from an exchange to a new wallet, or paying someone whose address has never been used, would carry the 183,600-gas new-account charge (exchanges may pass it on in withdrawal fees). Sending to an address that already holds ETH does not.
• Cancels get cheaper. A 0 ETH send to yourself, which is how wallets cancel a stuck transaction, drops from 21,000 to 12,000 gas (our stuck transaction checker explains cancels).
• Wallets must update gas estimates. The EF warns that cached gas constants “will underestimate and lead to failed transactions”. Keep your wallet app updated around the fork.
• Every ETH transfer leaves a log (EIP-7708), including ETH sent by contracts, so explorers and tax tools can track ETH like tokens.
• Layer 2s decide for themselves. The repricing applies to Ethereum mainnet; rollups set their own gas rules and fees and may or may not adopt it (compare them in Layer 2 fees).

What changes for stakers: faster exits and ePBS

Today exits share a cap of 256 ETH per 6.4-minute epoch, 57,600 ETH a day. EIP-8061 drops that cap for exits and sets the exit churn to total stake ÷ 32,768. With about 43.5M ETH of effective stake (our beacon snapshot of October 25), that is 1,328 ETH per epoch, or 298,800 ETH a day: 5.19× today (the EIP calls it roughly quadrupling at its reference stake). Entries stay capped at 256 ETH per epoch, and consolidations get their own churn (about 408 → 664 ETH per epoch). Today’s queue lengths are on our ETH unstaking queue page.

ePBS (EIP-7732) adds a new validator duty, payload timeliness attestations, and lets builders (staked with as little as 1 ETH) be paid by the protocol instead of through trusted relays. Solo stakers need updated execution and consensus clients before the fork. Pool and exchange stakers (Lido, Coinbase, Kraken) need do nothing. Slashed validators can no longer be chosen to propose (EIP-8045).

All 25 Glamsterdam EIPs in plain English

EIP-7773 lists 18 EIPs scheduled for inclusion plus 5 networking and 2 informational EIPs. Status is each EIP’s own header on October 26, 2026.

Why Glamsterdam was delayed

On October 13, 2026 ChainSecurity showed that under EIP-8037 the gas for new state can come from a separate “reservoir” that is always forwarded to sub-calls and refilled when a call fails, and that together with EIP-8038 the execution-gas part of a fresh storage write falls (22,100 → 12,100 gas, with 97,920 state gas on top). Together these can let a contract’s failure handler finish where it used to run out of gas, undermining checks some protocols use to stop “insufficient gas” griefing. The issue was raised for the October 22 core developers call as “serious security risks”, and the Hoodi fork was postponed the same day.

The broader picture from the EF’s Repricing Impact replay of 929.7M mainnet transactions (Dec 3, 2024 to Jun 15, 2026, run on an August 2026 version of each schedule): under EIP-8037, 66.27% were unchanged, 13.12% succeeded with different gas, 18.77% would need a higher gas limit (wallets re-estimate this) and 0.29% were potentially broken. Under EIP-8038: 39.89% unchanged, 49.12% changed, 9.11% need more gas, 0.33% potentially broken. Most of the risk sits with contracts that hard-code gas amounts, not with ordinary users.

Download the data (CC BY 4.0)

• CSV: gas used by 11 transaction types before and after Glamsterdam
• CSV: all 25 Glamsterdam EIPs in plain English, with status
• JSON: status, timeline, EIPs, gas cases, exit churn and replay results

GrowYourEthereum. (2026). Glamsterdam Upgrade: Gas Changes, EIPs and Status [Data set]. Updated October 26, 2026. https://growyourethereum.com/guides/glamsterdam-upgrade. Licensed CC BY 4.0.

<a href="https://growyourethereum.com/guides/glamsterdam-upgrade">Glamsterdam Upgrade: Gas Changes, EIPs and Status</a> by GrowYourEthereum, licensed under <a href="https://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a>.

@misc{growyourethereum_glamsterdam_upgrade_2026,
  author       = {{GrowYourEthereum}},
  title        = {Glamsterdam Upgrade: Gas Changes, EIPs and Status},
  year         = {2026},
  howpublished = {\url{https://growyourethereum.com/guides/glamsterdam-upgrade}},
  note         = {Data set, updated October 26, 2026. CC BY 4.0}
}