Ethereum Staking Reward Cut Could Erase ETH Borrowing and Weaken DeFi

A proposed Ethereum staking reward cut, outlined in EIP-8361, could have far-reaching consequences for DeFi. The proposal would lower validators' yield from 2.6% to about 1.2%, a 54% reduction phased in over 18 months. This change is intended to reduce dilution by lowering issuance, but it may also push out investors who value ETH as a productive, income-generating asset.

According to Stani Kulechov, founder of Aave, the proposal threatens staking-linked DeFi broadly and confidence in Ethereum's ability to set its own monetary policy. The mechanism is a burn: validators lose a larger share of their consensus reward as the total amount of staked ETH climbs, and the burned ETH disappears from supply.

The proposed cut could erase ETH borrowing, particularly for users who rely on liquid staking tokens like stETH. Aave's case study on Lido describes how this structure works: a user deposits wstETH or another liquid staking token as collateral, borrows WETH against it, converts that WETH into more staked ETH, and deposits it again.

With the proposed 54% reduction in consensus issuance, the unlevered spread would turn negative by roughly 0.3 points before any leverage applies. At five times leverage, a trade that used to add income starts to cost the user money every day it stays open.