Solana Raises Maximum Transaction Size to 4,096 Bytes as txv1 Goes Live
Solana activated the txv1 feature gate on mainnet at the start of epoch 1035 on September 15, 2026, at approximately 01:00 UTC, raising the network’s maximum transaction size from 1,232 bytes to 4,096 bytes, according to an official upgrade note published by the Solana Foundation. The change is defined in SIMD-0296 and delivered through the ...