Network operators are scheduling technical updates that adjust the underlying mainnet fees while changing block gas parameters on the base blockchain.
Basic mainnet update details
On Thursday, December 18thbetween 19:00 and 20:00 UTC. base main net Planned configuration changes will be made. During this one-hour window, developers change both the minimum tariff level and the block gas configuration to fine-tune the performance and cost dynamics on the network.
As part of the update, Minimum basic fee will rise from 200,000 ways to 500,000 ways. For a typical transaction, this fee currently equates to approximately the following estimated costs: $0.00015. However, while improving the robustness and predictability of on-chain activity, this adjustment is designed to remain negligible for everyday users.
Furthermore, Base is gas limit block by block 300 million to 375,000,000 gas. This change expands the theoretical maximum gas that can be processed in each block without fundamentally changing the user-facing experience for most transactions.
EIP-1559 resiliency and throughput effects
In addition to these changes, the network will see the following changes: Elasticity of EIP-1559 adjustment to 6. This elasticity parameter defines how much the block size can vary around the target and affects how quickly the price responds to demand. However, the practical impact on transaction processing capacity is expected to be limited.
Higher GasLimit and modern elasticity allow average throughput targets (gas target) moves slightly. The goal will increase from 60,000,000 to 62,500,000 gas per blockThis represents a small increase in effective capacity rather than a major scale-up event.
Overall, this combination Minimum basic fee Gas configuration updates are intended to fine-tune performance without introducing breaking changes. of Basic mainnet fee Move, along with modest throughput adjustments, is intended to stabilize costs while improving network efficiency under various load conditions.
Scope and impact of planned work
According to the announcement, this is Regular maintenance In particular, the Mainnet transaction pool and client software. However, this is not listed as a disruptive event and no extended downtime has been communicated at this stage.
The changes were published shortly before implementation, with a notice that read: December 16, 2025 – 18:51 UTC” Additionally, parties interacting with Base, such as dApp teams and infrastructure providers, should review updates to these parameters to ensure tool and monitoring thresholds are aligned.
In summary, the Dec. 18 base mainnet configuration update increases the minimum base price, expands gasLimit, and slightly increases GasTarget while adjusting EIP-1559 resiliency to provide gradual performance adjustments with minimal expected impact to end users.
