## Abstract
This proposal introduces _renewal-age pricing_ for Ethereum state writes. It builds on the `last_written_block` write-age metadata defined in [EIP-8188](./eip-8188.md), deriving a coarse `period` from each item’s last-write block number. The gas cost of state-writing operations depends on whether the target state is in the **Active** or **Inactive** tier, determined by how many periods have elapsed since its last write. Writing to Inactive state is more expensive than writing to Active state. Read costs are unchanged.
This creates an economic incentive for state hygiene without mandating deletion, complementing the storage-tiering signal that EIP-8188 already provides to clients.