Solana just flipped the switch on step two of its five-part plan to slash account storage costs by 90%. The second activation, hitting mainnet around September 11, 2026, drops the rent parameter from 6,333 lamports per byte down to 5,080, making up to 612,000 SOL available for users to reclaim.
What rent actually means on Solana
On most blockchains, storing data on-chain costs something. Solana’s version of this cost is called “rent,” though the name is a bit misleading. It’s not a recurring charge. It’s a fully refundable deposit that accounts must hold to keep their data stored on the network.
The original rate was 6,960 lamports per byte. Under proposal SIMD-0437, the network is cutting that in five planned steps to just 696 lamports per byte. That’s a 90% reduction, rolled out gradually to avoid any surprises in how the blockchain’s state grows.
Step one landed on September 3, 2026, trimming the rate to 6,333 lamports per byte. Step two takes it to 5,080. Together, those two moves represent a cumulative 27% cut from the original cost.
Where the 612K SOL comes from
When the per-byte deposit requirement drops, every existing account on Solana suddenly has more lamports locked up than it needs. That excess becomes reclaimable.
Users don’t need to close their accounts to get the SOL back. Solana provides a dedicated instruction called WithdrawExcessLamports that lets account holders pull out just the surplus without disrupting anything. Of course, closing the account entirely works too, if someone wants to go that route.
The 612,000 SOL figure represents the estimated excess across all accounts after step two takes effect. Across the full five-step rollout, the total reclaimable amount is expected to exceed 3 million SOL.
It’s worth noting that this SOL isn’t newly minted. It already existed on-chain, just sitting in account deposits where users couldn’t touch it. The rent reduction doesn’t inflate supply. It just unlocks funds that were already there.
The full roadmap and what’s still pending
Steps three through five are where things get ambitious. The plan aims to reach the final target of 696 lamports per byte by November 2026, but those later phases aren’t guaranteed to run on autopilot.
Each subsequent activation depends on the Solana core team monitoring state growth, essentially making sure the cheaper storage costs aren’t causing the blockchain’s data footprint to balloon uncontrollably. The later steps are also tied to the release of Agave 4.4, the next major version of Solana’s validator client.
Why this matters beyond the numbers
Account rent has been one of Solana’s quiet friction points for years. Every token account, every NFT, every DeFi position requires a minimum deposit just to exist on-chain. For a single account, the cost is trivial. But for protocols that create thousands or millions of accounts (think token airdrops, gaming items, or order books), those deposits add up fast.