Solana Expands Transaction Size Limit to 4,096 Bytes

Solana has increased its transaction size limit to 4,096 bytes through a mainnet upgrade, according to Cointelegraph. The change gives developers additional capacity when building transactions that require more data. In particular, the larger limit is intended to support zero-knowledge proofs and transactions carrying multiple signatures. The upgrade represents a significant expansion of the amount of information that can be included in a single Solana transaction. SOL is the native asset of the Solana network, while the change may also be relevant to developers and projects operating across its ecosystem. Cointelegraph reported the update on September 15, 2026. The source did not provide details on market-price effects or specify any changes beyond the new transaction-size limit and its potential use for these transaction types.