Will Ethereum's Glamsterdam Upgrade Finally Reduce
Published 6/17/2026, 10:43:17 PM
Yes, but selectively and modestly — Glamsterdam is not primarily a fee-reduction upgrade. Its core focus is on MEV fairness, architectural improvements, and network resilience. Fee impacts are transaction-type dependent and come with offsetting cost increases for certain operations.
What Glamsterdam Is
Glamsterdam combines "Gloas" (the Consensus Layer upgrade, named after a star) and "Amsterdam" (the Execution Layer upgrade, named after Devconnect's location). It follows the Fusaka upgrade (December 2025) and is targeting H2 2026 mainnet activation — currently testing on devnets with public testnets (Sepolia, Hoodi) upcoming [Source: https://ethereum.org/roadmap/glamsterdam].
The upgrade is described as "probably the largest fork since the Merge" [Source: https://web.search.results].
Fee-Reducing Mechanisms
| EIP | Effect | Magnitude |
|---|---|---|
| EIP-2780 — Reduce intrinsic transaction gas costs | 71% cheaper ETH transfers between existing accounts | Direct, immediate |
| EIP-7928 — Block-Level Access Lists (BALs) | Enables parallel transaction processing; supports higher gas limits | Indirect, long-term |
| EIP-8037 — State creation gas cost reform | Separates state gas from computation gas; enables safe gas limit increases toward 200M (from current ~60M) | Indirect, congestion relief |
The 71% reduction for simple ETH transfers is the most tangible, user-facing fee cut [Source: https://ethereum.org/roadmap/glamsterdam].
Offsetting Cost Increases
Not all changes reduce fees:
| EIP | Effect |
|---|---|
| EIP-8037 — State creation gas cost increase | Higher costs for contracts creating new state |
| EIP-7976 — Calldata floor increase | Higher costs for calldata-heavy transactions |
| EIP-7981 — Access list cost update | Higher costs for EIP-2930 access list transactions |
| EIP-8038 — State-access gas cost update | Increases gas costs for EXTCODESIZE, EXTCODECOPY to match modern hardware and prevent DoS |
Some mechanisms actively increase fees for specific transaction types [Source: https://web.search.results].
Primary Upgrade Focus
Glamsterdam's headliners are not fee-focused:
- EIP-7732 (ePBS): Enshrined Proposer-Builder Separation — moves block building into the protocol, removing reliance on off-protocol MEV relays. Expands the data propagation window from 2 seconds to ~9 seconds [Source: https://ethereum.org/roadmap/glamsterdam].
- EIP-7928 (BALs): Pre-declares which accounts and storage slots a block will access, enabling parallel transaction execution and faster syncs [Source: https://web.search.results].
- EIP-8080: Democratizes the consolidation queue, enabling up to 2.5x faster validator exits [Source: https://ethereum.org/roadmap/glamsterdam].
- EIP-7954: Raises the maximum contract size limit from ~24 KiB to 32 KiB [Source: https://ethereum.org/roadmap/glamsterdam].
Bottom Line
Glamsterdam will reduce L1 fees for simple ETH transfers by up to 71% (EIP-2780) and lays the groundwork for higher gas limits via state pricing reforms and parallel execution. However, it simultaneously increases costs for state creation and certain transaction types. Layer 2 solutions remain the primary scaling path for most users seeking meaningful fee reductions.
The upgrade is not a "fee killer" — it is architecturally focused on MEV fairness, network resilience, and preparing the protocol for future scaling, with modest and uneven fee impacts as a side effect.
What's Still Open
- Mainnet activation is targeted for H2 2026 but has not been finalized; delays are possible due to ePBS complexity and cross-client implementation parity [Source: https://ethereum.org/roadmap/glamsterdam].
- Gas limit increases to 200M are under testing but not guaranteed at launch.
- Real-world fee impacts will depend on network congestion and adoption of new transaction patterns.
Suggested Next Steps
- Deeper fee analysis: I can run on-chain data to model how EIP-2780's 71% transfer reduction would affect current gas usage patterns, and project L2 fee savings from reduced L1 calldata costs.
- Technical setup for L2 usage: Since L2s remain the main fee-reduction path, I can help you bridge ETH or tokens to a Layer 2 (Arbitrum, Optimism, Base) to start saving on fees today while waiting for Glamsterdam.