Solana to Increase Single Transaction Limit to 4096 Bytes, Expanding Capacity Over 3x

火星财经消息，September 7, Solana plans to activate Transaction v1 this Wednesday, increasing the maximum transaction size from 1,232 bytes to 4,096 bytes—an over threefold expansion. After the upgrade, complex operations previously requiring multiple transactions—such as large cryptographic proofs, multisignature payments, and certain privacy transfers—can be consolidated into a single transaction. Transaction v1 has already been running on Solana’s testnet and devnet; the existing transaction format will remain fully functional, and wallets and applications only need to upgrade if they require larger transaction sizes. However, on-chain data services relied upon by block explorers, wallets, and transaction applications must adapt to the new format, or they may fail to correctly parse transactions and priority fees. This upgrade aims to alleviate the long-standing structural limitations imposed by Solana’s 1,232-byte transaction cap, further enhancing its capacity to handle complex applications. The 4,096-byte limit aligns with the common 4KB memory page size found in validator hardware, helping to prevent excessive transaction sizes that could increase processing costs for the network and validation nodes.