Solana more than triples transaction size limit with mainnet upgrade

MonitoringCryptoProtocol changeFirst tracked 2026-09-15Last changed 2026-09-15

Current outcome

Solana activated a mainnet upgrade at epoch 1,035 that raises the maximum transaction size from 1,232 to 4,096 bytes and introduces a backward-compatible v1 transaction format, enabling zero-knowledge proofs and new onchain signature schemes.

Progress timeline

1 material updates

#0109.15
Initial2026-09-15 08:18 · publication time
Solana more than triples transaction size limit with mainnet upgrade
Solana activated a mainnet upgrade at epoch 1,035 that raises the maximum transaction size from 1,232 to 4,096 bytes and introduces a backward-compatible v1 transaction format, enabling zero-knowledge proofs and new onchain signature schemes.
Source evidence: Cointelegraph

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