TLDR
- Solana activated Transaction V1 on mainnet September 15, raising max transaction size from 1,232 bytes to 4,096 bytes.
- The upgrade gives developers about 3.3 times more space for signatures, instructions, and proof data in one transaction.
- Zero-knowledge proofs and large multisignature transactions benefit most from the added space.
- Legacy transaction formats still work, but some wallets and data providers may need updates to read the new format.
- Solana’s on-chain revenue reached $327 million in Q3 so far, up from $265 million in Q2.
Solana activated its Transaction V1 upgrade on mainnet this week. The change raises the maximum transaction size from 1,232 bytes to 4,096 bytes.
The upgrade went live at the start of epoch 1035 on September 15 at approximately 01:20 UTC, according to the Solana Foundation.
This gives developers about 3.3 times more room for instructions, signatures, and cryptographic data inside a single transaction. It does not mean the network processes more transactions per second. Instead, each transaction can now carry more data.
How the Upgrade Works
The old 1,232-byte limit came from an early design choice. Transactions had to fit inside a roughly 1,280-byte internet packet, leaving 1,232 bytes after networking overhead.
Solana later changed how it sends transaction traffic, making that original restriction less needed. Developers still had to split complex operations across multiple transactions to stay under the byte limit.
Transaction V1 lets larger operations settle in a single transaction instead. This can reduce cost and delay in some cases, since fewer signatures and only one confirmation may be needed.
Zero-knowledge proofs and large multisignature transactions gain the most from the extra space. These operations often require large amounts of cryptographic data that previously did not fit.
Solana co-founder Anatoly Yakovenko has pointed to future uses involving zero-knowledge roots and based rollups, where larger transactions could combine proofs and state changes in one step.
Existing legacy and v0 transaction formats still work. Developers only need to use the new format when they want access to the larger limit.
Some infrastructure, including wallets and block explorers, may need updates. These services must recognize the new format and read priority fee data correctly, since Transaction V1 stores that information differently.
Solana’s Network Activity and Revenue
Solana processed close to 10 billion non-vote transactions in the first quarter of 2026, an all-time high. The network saw around 9.7 billion in the second quarter.
On-chain revenue across the network reached $327 million in the third quarter so far. That is up from $265 million in the second quarter, an increase of 23.4%.
This revenue comes from activity across memecoins, decentralized exchanges, derivatives, and stablecoins on the network.
More transaction capacity could support further activity in these areas going forward. Higher activity has the potential to translate into higher fees and stronger network revenue over time.
Solana settled on 4,096 bytes partly because that figure matches a common memory page size used by validator hardware. Going higher could force transactions to span multiple memory pages, adding processing load for validators.
Larger transactions still use more network resources. Developers may need to pay higher priority fees during periods of network congestion, though the upgrade does not add a separate per-byte fee.
The next phase depends on how quickly developers and infrastructure providers adopt the new format across wallets, explorers, and trading applications.
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