Best Yield-Bearing Stablecoins: sUSDe, sUSDS, USDY Compared

What Yield-Bearing Stablecoins Are and Why They Matter

Under United States law, a payment stablecoin like USDC or USDT is barred from paying interest to holders. The issuer keeps the yield on the reserves. So anything that does pay you a return on a stable dollar token is, by definition, not a plain payment stablecoin in the eyes of regulators.

That structural fact created an opening for yield-bearing wrappers. These are stablecoins or stablecoin-like instruments that route Treasury yield, DeFi protocol fees, or other income streams directly to holders. As of March 2026, yield-bearing stablecoins reached $22.7 billion in total market cap, representing 7.4% of the total stablecoin market.

The three largest are sUSDe, sUSDS, and the legacy sDAI, with combined supply north of $13 billion as of May 2026. Each wrapper uses a different yield mechanism, carries a different risk profile, and suits different holders.

This comparison evaluates five wrappers by the metrics that matter: real yield net of fees, backing mechanism, redemption terms, historical peg stability, regulatory status, and the specific failure modes that would force you out at a loss.

RWA-Backed Treasury Yield: USDY

USDY from Ondo Finance is a rebasing yield-bearing note backed 1:1 by short-term U.S. Treasury notes and bank deposits. It paid approximately 4.65% APY across roughly $740 million in supply as of April 2026. Mid-December 2025 numbers showed about 3.75% yield on ~$690 million market cap.

The yield is simple. Ondo holds T-bills in a regulated structure and passes through the yield. That yield tracks the short end of the Treasury curve.

USDY is not a DeFi-native instrument. It requires KYC, operates under securities law compliance frameworks, and targets institutional and retail users who want regulatory clarity. Ondo, Franklin Templeton, BlackRock, and others built compliant products that retail and institutional traders could actually use.

Redemption is straightforward but not instant. You are redeeming from a fund structure, not a smart contract, so expect T+1 or T+2 settlement. There is no cooldown in the sUSDe sense, but liquidity depends on Ondo’s operational infrastructure and onchain secondary markets.

USDY is good for: holders who want Treasury-equivalent yield with a transparent legal wrapper, do not mind KYC, and do not need DeFi composability.

Not good for: privacy-focused users, anyone seeking double-digit APY, or DeFi strategies that require instant redemption and deep onchain liquidity.

Sky Protocol: sUSDS and Legacy sDAI

sUSDS is the savings-rate variant of USDS, the rebranded successor to MakerDAO’s DAI stablecoin. Holders deposit USDS into the Sky Savings Module and receive sUSDS, an ERC-20 whose redemption value rises with the Sky Savings Rate. The SSR currently pays around 6-7%. As of May 2026, sUSDS had $6.49 billion in supply, making it the largest rate-bearing stablecoin globally.

The yield comes from Sky’s portfolio of onchain lending positions, real-world-asset (RWA) loans, and direct ETH-backed collateral. Governance votes adjust the SSR monthly. The rate has tracked US Treasury yields plus a spread, ranging from 3.75% to 4.5% APY through Q1 2026, and has recently climbed as Sky increased allocations to higher-yielding RWA instruments.

Sky kept the legacy sDAI wrapper live for backward compatibility. DAI holders can still use the DAI Savings Rate without migrating. The DSR currently runs 50 to 100 basis points below the SSR. Both rates are set by separate governance votes and have occasionally drifted by 50 to 200 basis points.

Sky inherited Maker’s audit lineage going back to 2017, with reports from ChainSecurity, Trail of Bits, and PeckShield. The codebase is mature, but the collateral portfolio is not static. A sharp drawdown in crypto-backed vaults or a counterparty failure on the RWA side would tap the surplus buffer first and sUSDS holders only if the buffer is exhausted.

Redemption from sUSDS to USDS is instant and permissionless. From there you can swap USDS to USDC or other stables using major exchanges or onchain liquidity pools. There is no cooldown.

sUSDS is good for: DeFi users who want mid-single-digit yield with a long track record, instant liquidity, and wide integration across lending protocols and yield aggregators.

Not good for: users chasing double-digit APY or those unwilling to accept collateral composition risk from Sky’s RWA and CDP portfolio.

Ethena: sUSDe

sUSDe is the staked variant of Ethena’s USDe synthetic dollar. As of June 2026, the 7-day trailing APY sits at 7.1%, down from 9.4% in April. Across 2024 and 2025 the realized APY ranged from roughly 4% to 30%, with most periods clearing between 8% and 18%. USDe supply is approximately $4.4 billion and sUSDe supply is approximately $3.1 billion, a 70% stake ratio.

The yield mechanism is delta-neutral basis harvesting. Ethena holds long spot positions in liquid staking tokens, primarily stETH, and BTC, simultaneously shorts the equivalent perpetual futures positions on centralized exchanges, and harvests the funding rate paid by long perp traders.

When perp markets are in contango and funding is strongly positive, sUSDe yields climb above 15%. When funding flips negative during bear markets, the yield compresses to zero or briefly turns negative. The insurance fund, which stands at $73 million or roughly 1.7% of supply, absorbs short-term shortfalls. A multi-quarter bear could force structural changes.

There is a seven-day cooldown to unstake from sUSDe back to USDe. This delay exists so Ethena can unwind the corresponding hedge without forced trading at adverse marks. During high-volatility periods, seven days of locked capital can represent a meaningful opportunity cost or, in extreme cases, a peg-risk exposure window. The discount during unstaking is usually under 30 basis points but can widen during stress.

Aave V3 lists sUSDe as collateral with bespoke risk parameters. Some yield aggregators integrate sUSDe, but composability is narrower than sUSDS or sDAI because of the cooldown and the exotic yield source.

sUSDe is good for: users who accept funding-rate volatility in exchange for the highest base-case APY, have a medium-term holding horizon that tolerates the seven-day cooldown, and understand perpetual futures mechanics.

Not good for: anyone who needs instant liquidity, cannot tolerate periods of zero or negative yield, or is unfamiliar with the risks of centralized exchange custody and liquidation in Ethena’s hedging stack.

If you want the full mechanics breakdown, read the Ethena sustainability analysis.

Frax: sfrxUSD

sfrxUSD is the staked variant of Frax’s frxUSD stablecoin. The yield typically sits in the 5-8% band and is natively supported on Fraxtal, Ethereum, Arbitrum, and Optimism.

Frax’s yield comes from a mix of RWA allocations, primarily short-term Treasuries, and onchain lending yield from frxUSD deployment in DeFi protocols. The composition is adjustable by Frax governance but has tilted heavily toward Treasuries in 2026, making sfrxUSD structurally similar to USDY but with a DeFi-native wrapper and no KYC requirement.

Redemption from sfrxUSD to frxUSD is instant. From there, frxUSD liquidity on major DEXs and centralized venues is solid but narrower than USDC or DAI. Slippage on large redemptions can exceed 50 basis points during periods of low liquidity.

sfrxUSD is good for: users who want Treasury-equivalent yield without KYC, prefer DeFi-native wrappers, and plan to hold on networks where Frax has deep integration.

Not good for: users who need the deepest onchain liquidity or who are uncomfortable with Frax’s smaller TVL relative to Sky or Ethena.

How to Choose Among Them

The decision comes down to three variables: yield preference, liquidity requirements, and risk tolerance.

If you want the highest APY and can tolerate funding-rate volatility and a seven-day cooldown, sUSDe is the clear pick. The 7.1% trailing yield as of June 2026 is the highest among the major wrappers, and the upside during positive-funding regimes can push into double digits. The tradeoff is that the yield collapses when perp funding flips, which it did in early 2025.

If you want stable mid-single-digit yield with instant liquidity and the widest DeFi integration, sUSDS is the default. At 6-7% APY and $6.49 billion in supply, it has the scale, audit history, and composability that make it the benchmark DeFi savings instrument. The legacy sDAI option is there if you prefer to hold DAI, but the SSR runs 50 to 100 basis points higher, so the migration makes sense unless you have specific reasons to stay in the DAI ecosystem.

If you want Treasury-equivalent yield with regulatory clarity and are comfortable with KYC, USDY is the right choice. The 4.65% APY is lower than DeFi alternatives, but you are not taking smart-contract risk, governance risk, or collateral composition risk. You are holding a fund share backed by short-term Treasuries.

If you want Treasury yield without KYC and prefer DeFi composability, sfrxUSD splits the difference. The 5-8% APY range reflects Frax’s RWA tilt, and the instant redemption makes it more liquid than USDY, though the secondary market is narrower.

One more variable: tax treatment. Stablecoin yield is taxable as ordinary income in the year received, regardless of whether you take it as a rebate or as appreciation in a wrapper’s price. If you are holding across a tax year, track the accrued yield separately. The IRS will.

For detailed position-sizing rules, see how much to put in any one yield venue.

Risk Surfaces You Cannot Ignore

Every wrapper has a failure mode. Understanding that mode is more important than comparing APYs.

sUSDe’s failure mode is a prolonged negative-funding environment that exhausts the insurance fund. If perp funding stays negative for multiple quarters, Ethena would need to cut the yield to zero, and if the insurance fund is depleted, USDe itself could trade below peg. The seven-day cooldown means you cannot exit instantly if that scenario starts to develop.

sUSDS and sDAI carry collateral risk. Sky’s portfolio includes crypto-backed vaults and RWA loans. A sharp drawdown in ETH or a counterparty failure on the RWA side would tap the surplus buffer first. The buffer is currently well-capitalized, but in a severe stress scenario sUSDS holders would take losses if the buffer is exhausted.

USDY’s failure mode is operational or legal risk at the fund level. If Ondo’s Treasury custody fails, or if regulatory changes force liquidation of the underlying T-bills at adverse prices, USDY holders would face delays or haircuts. This is remote but not zero.

sfrxUSD carries similar collateral risk to sUSDS but on a smaller scale. Frax’s RWA allocations are more concentrated, and the TVL is lower, which means less liquidity cushion during stress.

Peg stability under stress is a function of liquidity depth, not mechanism design. Even if something is designed to track $1, price can deviate if market liquidity dries up. Your plan must include where you will exit and at what cost. For sUSDe, that cost includes the seven-day cooldown. For sfrxUSD, it includes potential slippage on the frxUSD-to-USDC leg. For USDY, it includes T+1 or T+2 settlement lag.

If you want the framework for evaluating any yield opportunity, read how to evaluate a crypto yield opportunity safely.

Integration and Composability

sUSDS and sDAI have the widest integration. Aave, Compound, Spark, and most major lending protocols accept them as collateral. Yield aggregators route to them automatically. DEX liquidity is deep across Ethereum mainnet and L2s.

sUSDe is listed on Aave V3 with custom risk parameters, but composability is narrower because of the cooldown. You can use it as collateral, but borrowing power is lower than sUSDS, and fewer protocols accept it.

USDY and sfrxUSD have limited DeFi integration. USDY is primarily held in wallets or custodial accounts, not deployed as collateral. sfrxUSD has native support on Fraxtal and Curve pools, but it is not widely accepted as collateral outside the Frax ecosystem.

If your strategy involves stacking yield by using the wrapper as collateral to borrow and redeploy, sUSDS is the only realistic option at scale. sUSDe works for smaller positions if you are comfortable with the cooldown. USDY and sfrxUSD are better as end-state holdings rather than intermediate DeFi primitives.

Regulatory and Tax Considerations

USDY is the only wrapper that is explicitly structured as a regulated security. That gives you legal clarity but also means you are subject to fund-level disclosures, KYC, and accredited-investor restrictions in some jurisdictions.

sUSDS, sDAI, sUSDe, and sfrxUSD are DeFi-native instruments. None require KYC to mint or redeem. All are accessible globally, subject to smart-contract interaction restrictions in sanctioned jurisdictions.

The GENIUS Act and MiCA frameworks impose licensing and reserve rules that push yield-bearing tokens into regulated investment categories in many jurisdictions. As of 2026, the regulatory classification is still in flux. If you hold sUSDS or sUSDe in a jurisdiction where MiCA applies, expect reporting obligations similar to securities holdings.

Tax treatment is roughly analogous to other interest income: taxable as ordinary income in the year received, regardless of whether you take it as appreciation in wrapper price or as a rebate. Track the accrued yield separately if you hold across a tax year. For the full breakdown, see how to report DeFi yield on your taxes.

Live Data and Where to Track Yields

Yields on all five wrappers are variable. The numbers in this comparison reflect June 2026 snapshots. By the time you read this, they will have changed.

To track live APY, TVL, and pool metrics, use DeFiLlama’s stablecoin yield dashboard. It aggregates real-time data across protocols and chains.

For sUSDS and sDAI, Sky publishes the SSR and DSR on the official governance dashboard. For sUSDe, Ethena publishes the 7-day trailing APY and insurance fund balance on their app. For USDY, Ondo discloses the current yield and NAV on their investor portal. For sfrxUSD, Frax publishes the rate on the Frax Finance dashboard.

Do not rely on aggregators alone. Check the protocol’s native dashboard to verify the rate before you deposit.

The Takeaway

sUSDS and sUSDe are the two largest and most liquid wrappers. sUSDS pays 6-7% with instant redemption and the widest DeFi integration. sUSDe pays 7.1% with a seven-day cooldown and funding-rate volatility. USDY pays 4.65% with KYC and T+1 settlement. sfrxUSD pays 5-8% with DeFi composability but narrower liquidity than sUSDS.

The highest APY is not the decision. The question is which failure mode you can tolerate and which liquidity profile matches your exit plan. If you need instant liquidity and mid-single-digit yield, hold sUSDS. If you can tolerate a seven-day cooldown and want the highest base-case APY, hold sUSDe. If you want regulatory clarity and Treasury-equivalent yield, hold USDY.

The rates will change. The risk surfaces will not.

Frequently Asked Questions

What is the highest-paying yield-bearing stablecoin in 2026?

sUSDe from Ethena currently pays 7.1% APY as of June 2026, the highest among major wrappers. The yield comes from perpetual futures funding rates and can climb above 15% during positive-funding regimes but compresses to zero or negative when funding flips. sUSDS pays 6-7%, USDY pays 4.65%, and sfrxUSD pays 5-8%. The highest APY carries the most volatility.

Are yield-bearing stablecoins safe?

Safety depends on the specific wrapper and failure mode. sUSDS and sDAI carry collateral risk from Sky’s RWA and CDP portfolio. sUSDe carries funding-rate risk and a seven-day cooldown that locks capital during stress. USDY carries operational and legal risk at the fund level. sfrxUSD carries collateral concentration risk. All are safer than unaudited DeFi protocols, none are risk-free. Understand the failure mode before you deposit.

Do I need KYC to hold yield-bearing stablecoins?

USDY requires KYC because it is structured as a regulated security. sUSDS, sDAI, sUSDe, and sfrxUSD are DeFi-native instruments and do not require KYC to mint or redeem. However, if you acquire or sell through a centralized exchange, the exchange will require KYC. Direct smart-contract interaction is permissionless for the DeFi wrappers.

How is yield-bearing stablecoin income taxed?

Yield from stablecoin wrappers is taxable as ordinary income in the year received, regardless of whether you take it as appreciation in wrapper price or as a cash rebate. Track the accrued yield separately if you hold across a tax year. The IRS treats it the same as interest income from a savings account. Cost basis adjusts when you redeem. Consult a tax professional for jurisdiction-specific rules.

Can I use yield-bearing stablecoins as collateral in DeFi?

sUSDS and sDAI have the widest collateral acceptance across Aave, Compound, Spark, and other lending protocols. sUSDe is accepted on Aave V3 with custom risk parameters but has lower borrowing power due to the seven-day cooldown. USDY and sfrxUSD have limited DeFi integration and are rarely accepted as collateral outside their native ecosystems. For collateral-based strategies, sUSDS is the most liquid and composable option.