Solana is taking another swing at tightening its monetary policy. Two governance proposals, SIMD-0550 and SIMD-0553, are advancing through the network’s voting process this week, and together they represent the most aggressive tokenomics overhaul Solana has attempted since the failed SIMD-0228 vote in early 2025.

What SIMD-0550 and SIMD-0553 actually do

SIMD-0550, submitted on June 2, 2026, by Helius engineer lostintime101, doubles the annual disinflation rate from 15% to 30%. Solana’s inflation rate currently decreases by 15% each year, slowly grinding down toward a terminal rate. At the current pace, reaching that terminal rate takes roughly 5.7 years. SIMD-0550 would compress that timeline to about 2.8 years. By accelerating the decay curve, the proposal would eliminate approximately $1.5 billion in future SOL emissions over six years.

SIMD-0550 has already cleared a meaningful hurdle. The proposal has been promoted for a formal Solana Governance Proposal vote, with Anza reviewers signaling near-approval through GitHub comments posted between June 10 and 14. Firedancer’s sign-off remains pending, which is the last major technical checkpoint before the broader validator community weighs in.

SIMD-0553, submitted the following day by fellow Helius engineer 0xIchigo, proposes restructuring Solana’s fee system by introducing a burned resource fee tied to compute units. Under current conditions, the network burns roughly 650 SOL per day. SIMD-0553 could push that figure to approximately 9,000 SOL daily under favorable network activity conditions, nearly a 14x increase in daily burns.

Combined, the two proposals could push net SOL supply growth below the 1.5% terminal inflation target, creating something closer to a deflationary dynamic during periods of high network usage.

Why this time might be different

In March 2025, SIMD-0228 attempted to accelerate inflation decay through a market-based emissions mechanism. It attracted only 37.8% validator support, well short of the 66.67% supermajority required to pass. SIMD-0550 appears to have learned from that experience. Rather than introducing a novel market-based system, it simply adjusts an existing parameter — changing the disinflation rate from 15% to 30% doesn’t require new infrastructure. It’s a knob turn, not a rebuild.

The proposals have secured public backing from key figures including Solana co-founder Anatoly Yakovenko. Helius also operates one of Solana’s most widely used RPC infrastructure providers, giving the firm credibility among validators who depend on its services daily.

What this means for SOL holders and the broader market

Cutting $1.5 billion in future emissions removes persistent selling pressure: every epoch, newly minted SOL enters circulation and a portion gets sold by validators covering operational costs. If daily burns genuinely scale from 650 to 9,000 SOL during high-activity periods, network usage directly reduces circulating supply. A network approaching its terminal inflation rate in 2.8 years rather than 5.7 years reaches supply equilibrium faster, compressing the period of dilution.

The risk is that validators reject the proposals again. Staking yields would decline faster under SIMD-0550, and smaller validators operating on thin margins might view that as an existential threat. The 66.67% threshold is deliberately high, designed to prevent changes that lack broad consensus.

With SIMD-0553, tying burns to compute units means the deflationary effect scales with network activity. During quiet periods, burns could remain modest, making the burn mechanism less impactful precisely when supply reduction would matter most.