GAS_PRICE_BUFFER_MULTIPLIER

Documentation for eth_defi.gas.GAS_PRICE_BUFFER_MULTIPLIER data.

GAS_PRICE_BUFFER_MULTIPLIER = 1.12

Safety buffer multiplier applied to maxFeePerGas in EIP-1559 transactions.

On L2 chains like Arbitrum, the base fee can fluctuate between the time gas is estimated and the time the signed transaction reaches the sequencer. Without a buffer, this race condition causes rejections with:

max fee per gas less than block base fee

A 12% buffer absorbs typical L2 base fee volatility while keeping overpayment minimal (unused gas fee is refunded by the protocol).

For more information see:

• Arbitrum gas fees documentation

• Arbitrum base fee discussion on GitHub

• EIP-1559 specification