sUSDS is the savings-rate variant of USDS, the rebranded successor to MakerDAO’s DAI stablecoin. Depositors supply USDS into the Sky Savings Module and receive sUSDS — an ERC-4626 yield-bearing token whose redemption value rises continuously with the Sky Savings Rate (SSR). Unlike utilization-driven DeFi lending rates, the SSR is set by SKY governance and funded by Sky’s diversified portfolio of overcollateralized lending positions, real-world-asset (RWA) loans, T-bill-backed allocations, and direct ETH-backed collateral. The current rate sits at 3.75% APY (May 2026), down from 4.5% earlier in the year as Sky governance tracked Fed rate cuts. With over $10 billion in supply, sUSDS is the largest yield-generating stablecoin in DeFi by a wide margin.
The key feature of sUSDS is yield smoothness — the SSR ratchets up or down by governance vote rather than reacting minute-by-minute to market conditions, making it the closest onchain analog to a high-yield savings account. The Sky Savings Rate is now distributed through major fintech wallets via the March 2026 Privy/Stripe partnership, embedding sUSDS as default savings infrastructure across 2,000+ apps and 110M+ wallets. The token is fully ERC-4626 compliant, accepted as collateral on Aave, Spark, Morpho, and most major lending venues, and free of any lockup or cooldown. Live SSR rate and Sky reserves data at info.skyeco.com.
- Smoothest yield in DeFi: the governance-set SSR ratchets in discrete steps rather than fluctuating with market utilization — predictable returns that simplify treasury planning and tax accounting.
- Largest yield stablecoin by supply: $10B+ in deposits means deep secondary liquidity on Curve, Uniswap V4, and Balancer — easy to enter/exit at scale without slippage.
- Diversified collateral backing: SSR is funded by a portfolio of RWA loans, ETH-backed positions, and onchain lending — single-point-of-failure risk is materially lower than synthetic-dollar competitors.
- Decade-long protocol history: Sky (formerly MakerDAO) has the longest operational track record of any DeFi protocol, with successful navigation of Black Thursday 2020, the USDC depeg of March 2023, and multiple Fed rate cycles.
- Mainstream distribution rails: via the Privy/Stripe partnership, sUSDS is now the default yield layer for thousands of consumer apps — meaningful adoption growth that strengthens long-term peg stability.
- Yield tracks Fed funds: when the Fed cuts rates, SSR follows with a 30-60 day lag — depositors should not expect 2024-style 8%+ rates without an inflation/rate regime change.
- Governance discretion risk: the SSR is set by SKY token holders, not by market — a governance attack or controversial vote could theoretically suppress or reallocate the rate, though no such event has occurred.
- Yield below DeFi alternatives: at 3.75%, sUSDS lags Morpho USDC vaults (5-7%), syrupUSDC (4.8%), and Aave Base USDC during high utilization — the trade-off for smoothness is real.
- RWA collateral exposure: a meaningful share of Sky’s reserves sits in real-world-asset loans whose default behavior is less battle-tested onchain than DeFi-native collateral — a major RWA write-down could affect the surplus buffer.
- Regulatory ambiguity: yield-bearing stablecoins sit in a gray area under pending U.S. stablecoin legislation — sUSDS could face restrictions if Congress moves to classify yield distribution as a securities offering.
Sky Savings Rate (sUSDS) Details
