Blockchain Fee Reduction

The TON Core team has prepared a blockchain update to reduce fees by 6x, in line with Pavel Durov’s MTONGA plan.

This update includes:

1) Performance improvements

The previous Sub-Second update improved not only operation speed but also overall blockchain performance, making a fee reduction possible. Since then, additional optimizations and performance improvements have also been implemented, including a new mempool based on a persistent Cartesian tree.

2) Fixes

In addition to performance improvements, this update will include fixes for issues identified on mainnet after the Sub-Second release. In particular, it addresses loss of synchronization on some liteservers and rare block rate instability.

Planned Schedule:

April 28, 2026 12:00 UTC — Validator software update.
April 30, 2026 13:00 UTC — Vote to lower gas prices in the blockchain configuration.

Lower fees are important for the next stages of the MTONGA plan. Since fees do not constitute a significant portion of validator rewards, validator rewards are expected to decrease by less than 0.4%.

Mainnet validator operators are asked to be prepared to update their software on 28 April and to participate in the vote on 30 April.