Ethereum wants to remove the need to hold ETH for gas, but its current design leaves stablecoin sponsors with a front running risk.
- EIP-8141, an Ethereum proposal scheduled for the Hegotá upgrade in 2027, would let another account or service pay a user's network fee in ETH while receiving payment from the user in an ERC-20 token such as USDC or USDT.
- Ethereum core developers moved the proposal to "Scheduled for Inclusion" on Aug. 27.
- But the proposal's current public-mempool design comes with a limitation that has received little attention in coverage of the upgrade.
- In an example showing fee payment with ERC-20 tokens, the EIP says sponsors must accept some risk that a user could front run the sponsored transaction and empty their token balance before it lands on-chain.
Balance checks happen off-chain
Matt Garnett, an Ethereum developer involved in the EIP-8141 discussion, explained in June that a sponsor can't check a user's ERC-20 balance on-chain during that part of public-mempool validation because of restrictions designed to prevent transactions from depending on mutable third-party state.
Instead, he said, the sponsor would need to check the balance off-chain before agreeing to pay.
Developers could make ERC-20 balances part of transaction validity, but Garnett said doing so would introduce additional complexity and governance decisions, so support is being held off for now.
- That means a service could see that a wallet holds enough USDC, agree to front the ETH gas, then find that the user moved those tokens before the sponsored transaction was included.
- The EIP suggests sponsors could respond by rejecting or restricting service to users who abuse the system.
ETH still pays the network
EIP-8141 itself doesn't replace ETH as Ethereum's underlying gas asset. Instead, it separates the user from the account that actually pays the network.
Its proposed "Frame Transactions" split a transaction into programmable steps for validation, payment and execution, with as many as 64 frames allowed. A sponsor could pay the gas in ETH, receive stablecoins from the user and potentially swap those tokens back into ETH afterward.
- The proposal remains formally in draft despite being scheduled for Hegotá, meaning its implementation can still change before the 2027 upgrade.
- The Coinformer reached out to EIP-8141 authors Felix Lange and Matt Garnett, as well as the Ethereum Foundation's press team, for comment and will update the story if a response is received.