Solana Mainnet Upgrade Allows Larger Transaction Sizes with Transaction V1

Solana's mainnet has undergone an upgrade to its Transaction V1 format, allowing for larger transaction sizes. This increase brings the maximum size of a single transaction from 1,232 bytes to 4,096 bytes, more than three times the previous limit.

The upgrade, which went live on September 15 at epoch 1,035, is expected to support workloads such as zero-knowledge proofs, large multisignature setups, and some on-chain signature schemes that were previously too large for a single transaction.

According to the Solana Foundation, this change does not increase the number of transactions per second but rather expands the amount of information one transaction can carry. The larger format will also reduce the need to split complex actions across several transactions, allowing developers to place more instructions and signatures inside one atomic transaction.