Stablecoin yield explained: where the APY comes from and what can break

Stablecoin yield explained means breaking an advertised stablecoin APY into its actual cashflow source and the “wrapper” you hold, then stress-testing whether you can exit at par when liquidity disappears. The yield is not paid by stability itself, it is compensation for taking specific risks across credit, liquidity/redemption, smart contracts, counterparties, and regulation.

Key Takeaways

• Stablecoin yield comes from deploying stablecoins into lending, liquidity provision, settlement, or Treasury-linked structures, not from the stablecoin “itself.”
• The fastest way to judge a stablecoin APY is to identify the payer of the cashflow and whether the return is revenue-backed or incentive-driven.
• APR vs APY is marketing math: APR is simple interest and APY assumes compounding, but neither quote captures fees, changing rates, or stress exits.
• U.S. regulatory direction under the OCC’s GENIUS Act proposal would bar OCC-supervised payment stablecoin issuers from paying interest or yield, pushing yield into wrappers and partner structures.

How stablecoin yield actually works

A user chasing “stablecoin interest” is usually doing something simple on the screen, deposit USDC, USDT, or another dollar-pegged token and watch a rate tick up. Under the hood, three things happen between clicking deposit and seeing earnings: the stablecoin moves into a program or smart contract, that program deploys it into an activity that throws off cashflows, and the program credits the user with a claim on principal plus whatever net return remains after fees and losses.

The key mental model is that the user is not being paid for holding a stable asset. A stablecoin is a token designed to target a stable value, often $1. Stablecoin yield is what happens when that token is used as working capital somewhere else. The “somewhere else” can be a lending market, an AMM pool, a settlement program, or a Treasury-linked wrapper. Each route has a different payer, a different legal or on-chain claim, and a different failure mode.

This is why stablecoin APY moves around. Rates change with utilization in lending markets, with trading volume in fee-based pools, and with incentive budgets when programs subsidize deposits. Even the cleanest-looking yield offer is path-dependent: fees, compounding assumptions, and the ability to redeem or withdraw during stress determine realized returns.

The through-line is the same as any basis trade decomposition: (1) identify the real cashflow versus subsidy, (2) identify the wrapper actually owned, and (3) map the worst-case exit. If the offer cannot answer those three, it is not “how to earn yield on stablecoins.” It is a marketing rate with hidden structure.

Where the yield comes from

A stablecoin yield number has to be paid by someone or something. When the payer is identifiable, the yield is easier to handicap. When the payer is vague, it is usually incentives.

The main buckets show up repeatedly across venues:

1. Treasury-linked carry. The return is ultimately tied to short-dated government bills or repo, accessed through onchain cash-equivalent products. This is where the “tokenized treasuries vs stablecoins” distinction matters. A stablecoin targets $1 and relies on stablecoin reserves and redemption mechanics. A Treasury-linked token is a wrapper around a portfolio that earns the policy rate, with its own issuance and redemption terms. 2. Credit intermediation. Borrowers pay to lever, hedge, or arbitrage. In DeFi, variable rates are set by protocol utilization. In centralized programs, the intermediary lends to trading firms or liquidity providers and passes back a portion of the interest. 3. Fee capture. AMMs and other liquidity venues pay LPs from swap fees. Some pools also add token incentives on top, which can dominate the displayed APY when programs are aggressive. 4. Derivatives carry and basis. Some strategies use stablecoins as collateral to capture funding or basis spreads in hedged structures. The cashflow is real when the spread is real, but the strategy adds liquidation and execution risk. 5. Incentives and subsidies. Token emissions, rebates, and promotional budgets can make a rate look like “free carry.” The problem is durability. When incentives end, the yield often compresses quickly.

The cleanest split is revenue-backed yield versus incentive-driven yield. Revenue-backed yield is paid from borrower interest, transaction fees, or settlement activity. Incentive-driven yield is paid from emissions or subsidies that can decay. If the only explanation for a high stablecoin APY is “rewards,” the offer is a melting ice cube.

Common stablecoin yield structures

The same yield source can be packaged into very different “wrappers,” and the wrapper is what the user actually owns. That wrapper determines redemption rights, liquidity, and what happens if things go wrong.

Common structures tend to fall into a few rails:

1. Tokenized Treasury and money-market wrappers. The user holds an onchain representation of a Treasury-bill or government money-market strategy. The yield tracks short-duration rates, but the risk shifts to the legal structure, custody, and redemption windows. This is not the same thing as holding a payment stablecoin with disclosed stablecoin reserves. 2. DeFi lending pools. The user supplies stablecoins to a protocol and earns a variable rate paid by borrowers. The claim is typically a receipt token or accounting entry in the protocol. The rate can behave like a floating money-market rate, with spikes when leverage demand rises. 3. AMM liquidity provision. The user deposits stablecoins into a pool and earns fees, sometimes plus incentives. The wrapper is an LP position. The exit is selling or withdrawing that LP position, and a depeg inside the pool can turn “stable” into immediate realized loss. 4. Vaults and aggregators. The user deposits stablecoins into a vault that reallocates across lending, LP, and sometimes hedged carry. The wrapper is a vault receipt. The yield can look smooth, but the risk is layered: strategy opacity, governance changes, and multiple contract dependencies. 5. Centralized yield programs. The user deposits with an intermediary that routes assets into lending, repo, or Treasury products. The wrapper is a claim on the intermediary, and the key questions become counterparty credit, rehypothecation policy, and withdrawal terms.

Stablecoin type still matters because it sets the ceiling on how clean the structure can be. A crypto backed stablecoin introduces onchain collateral and liquidation mechanics that can add complexity to any yield wrapper built on top of it. Even when the yield rail is “conservative,” the stablecoin leg can be the weak link if redemption or peg stability is conditional.

Risks that can erase the yield

The failure mode in “earning interest on stablecoins” is rarely day-to-day price volatility. The blow-ups come from exits, plumbing, and legal claims.

The main risks are nameable and show up differently depending on the wrapper:

1. Liquidity and redemption risk. A yield product can be solvent and still trap users behind withdrawal gates, notice periods, or thin secondary markets. The stress test is simple: if everyone wants out, does the user redeem at par, or sell at a discount. 2. Counterparty and rehypothecation risk. Centralized programs can reuse customer assets. If an intermediary rehypothecates deposits or runs maturity mismatches, the user’s “stable” principal is exposed to a run dynamic. 3. Smart-contract and integration risk. DeFi rails can fail through upgrade paths, governance changes, or cross-protocol dependencies. Audits reduce some risk, but they do not prevent new failure modes introduced by integrations. 4. Depegging risk. A stablecoin can trade away from $1 during stress. In lending, that can trigger liquidations and bad debt dynamics. In AMM LP, a depeg can crystallize losses immediately because the pool rebalances into the weaker asset. 5. Regulatory and legal-claim risk. The user’s rights depend on the structure. A payment stablecoin redemption claim is not the same as a claim on a fund share, a vault receipt, or an intermediary balance sheet.

APR vs APY sits on top of all of this and can distract from it. APR is simple interest and APY assumes compounding, but neither quote captures fees, changing utilization, or the cost of exiting under stress. A headline stablecoin APY can still produce a negative realized return if the user pays spread to exit, eats a discount, or gets stuck during a redemption crunch.

Regulation and the future of yield

U.S. policy is explicitly trying to keep payment stablecoins from looking like interest-bearing deposits. On February 25, 2026, the OCC issued a Notice of Proposed Rulemaking to implement the GENIUS Act framework for payment stablecoin issuers under OCC oversight. The proposal would establish standards for issuance, reserve management, redemption, custody, capital, and risk management.

One line matters directly for yield: the OCC proposal would prohibit OCC-supervised permitted payment stablecoin issuers from paying interest or yield on payment stablecoins. The proposal also discusses uncertainty around “indirect” yield, where partners or affiliates could attempt to route rewards to holders even if the issuer itself is barred. That direction of travel pushes yield away from the issuer and into wrappers, intermediaries, and activity-based programs with more moving parts.

The proposal also includes a scale trigger: state-chartered payment stablecoin issuers with $10 billion or more in outstanding issuance would need to transition to federal prudential supervision within prescribed timeframes or cease issuance until they fall back below the threshold. That is a reminder that stablecoin reserves, custody, and redemption are becoming regulated plumbing, not just product features.

Policymakers care about yield-bearing structures for a second reason: they can compete with bank deposits. The Bank Policy Institute argues there is no “law of the conservation of deposits,” and that yield-bearing stablecoins can reduce aggregate deposits and bank lending after system-wide adjustments. BPI cites a calibrated model (Cong, 2025) implying that if stablecoins reached roughly $4 trillion by 2030 and were perfect substitutes for deposits, deposits could fall dollar-for-dollar with stablecoin growth. BPI also cites a Federal Reserve economist estimate of deposit and lending reductions ranging from $65 billion to $1.26 trillion.

That macro debate feeds back into product design. If issuer-paid yield is constrained, the market will keep trying to recreate yield through wrappers. Users will need to get sharper about what they actually hold.

A due diligence checklist for yield

A stablecoin yield offer can be evaluated quickly if the questions are asked in the right order. The goal is not to eliminate risk. The goal is to map the advertised rate to a cashflow and a worst-case exit.

1. Identify the payer. Is the yield coming from borrower interest, trading fees, Treasury interest via a wrapper, derivatives carry, or incentives. 2. Classify the yield as revenue-backed or incentive-driven. If incentives disappeared tomorrow, would the strategy still have a meaningful return. 3. Name the wrapper. Is the user holding a payment stablecoin balance, a lending share, an LP position, a vault receipt, or a claim on an intermediary. 4. Read the exit terms like a credit agreement. What can be redeemed into (USD, USDC, something else), what are the cutoffs, and what gates or notice periods exist. 5. Stress-test liquidity. If secondary markets thin out, does the user have to sell at a discount to exit. 6. Check stablecoin reserves and redemption mechanics. Reserve quality and redemption rights set the floor under the whole structure. 7. Look for rehypothecation and custody language. If an intermediary can reuse assets, the yield is partly payment for that balance-sheet risk. 8. Treat APR vs APY as a quote, not a promise. Compounding assumptions, fees, and variable rates can turn a headline APY into something very different.

This checklist is also the cleanest way to compare “how to earn yield on stablecoins” across products without getting hypnotized by the highest stablecoin APY on the page.

The Take

I’ve watched traders treat stablecoin yield like free carry because the principal prints “$1.00” on the screen, then get surprised when the exit is a discount sale instead of a redemption. The mistake is always the same: staring at APY and never asking what the wrapper is. A lending receipt, an LP token, and a centralized IOU can all be marketed as “earning interest on stablecoins,” but they do not fail the same way.

The clean posture is to decompose every rate like a basis trade. If the payer cannot be named, it is probably incentives. If the exit path under stress is “sell it on the market,” it is not a par instrument. Regulation is also pushing yield away from the issuer and into partner rails, which means more structures with more moving parts. The rate is the easy part. The redemption mechanics are the trade.

Sources

• BitGo
• Stablecoin Insider
• Freshfields
• Bank Policy Institute