TechFlow reported on June 17 that Helius published a research article on Solana inflation adjustment proposal SIMD-550. The proposal recommends increasing Solana’s inflation reduction rate from -15% to -30%. Under the proposal’s parameters, the estimated time for Solana to reach its 1.5% long-term inflation target would be shortened from about 5.7 years to 2.8 years.
SIMD-550 changes the pace of inflation reduction
According to model calculations cited in the Helius research article, the proposed adjustment would reduce future SOL issuance by about 18.89 million tokens over the next six years. Based on current prices referenced in the report, that reduction would be equivalent to approximately $1.51 billion. The central change described in the proposal is a faster decline in inflation, while the long-term inflation target stated in the article remains 1.5%.
Helius framed SIMD-550 as part of Solana’s recent efforts to optimize its token economic model. The report said the goal is to reduce the continuous selling pressure and price-signal distortion associated with high inflation as the network gradually matures.
Validator profitability and staking yields
The report stated that the proposal’s effect on overall validator profitability would be relatively limited. Among 738 validators, the model estimates that 2 validators in the first year, 13 validators in the second year, and 30 validators in the third year would move from profitability or breakeven into losses.
At the same time, nominal staking yields would decline gradually. The Helius research article combines validator profitability changes, the estimated reduction in SOL issuance, and the timeline for reaching the long-term inflation target to describe how SIMD-550 would adjust Solana’s token economic parameters.