Yield-Bearing Stablecoins: Where the Return Comes From

A stablecoin that pays you is a different product from one that does not, even when both are worth a dollar. The plain kind holds reserves and keeps the income; the yield-bearing kind passes some of it on, or generates it some other way entirely.

There are four engines in common use, and they are not interchangeable. Tell them apart and you can size a position sensibly. Fail to, and you are holding something whose risk you cannot describe in the part of your portfolio meant to be boring.

Engine one: Treasury income passed through

The simplest design. The issuer holds short-dated government debt, as plain stablecoins do, and distributes the interest instead of keeping it. Tokenised money-market and Treasury funds work this way, as do savings wrappers around on-chain reserves.

The yield tracks short-term rates, so it falls when central banks cut and rises when they raise. The risk is mostly the issuer's operational and legal standing rather than the assets, which are about as dull as financial instruments get.

Practical constraint: many of these products are restricted to qualified or non-retail investors, or gated by jurisdiction. And in Europe, tokens regulated as e-money are prohibited from paying interest, which is why several issuers offer the yield through a separate wrapper rather than the token itself.

Engine two: lending your dollars out

Deposit into a lending market and borrowers pay you for the use of the balance. The rate is set by utilisation: heavy borrowing demand pushes it up, quiet markets push it toward nothing.

The risk is credit and liquidity. Loans are over-collateralised, so ordinary defaults are absorbed, but a violent move can leave positions underwater faster than liquidators can clear them, and a fully utilised pool cannot be withdrawn from until borrowers repay. Both have happened.

This is the engine behind most double-digit advertised rates on lending platforms, and the one where the gap between advertised and realised return is widest once you account for the weeks you could not withdraw.

Engine three: the funding-rate carry trade

A hedged position: hold spot, short the perpetual future, collect the funding that longs pay shorts. When markets are bullish, funding is positive and the trade pays well. The position is delta-neutral, so the dollar value does not swing with the price of the underlying.

It is a real trade run by real desks, and it has two failure modes. Funding turns negative in a sustained downturn, so the yield becomes a cost. And the hedge lives on exchanges, so it carries venue risk: custody, margin engines and outages all sit between you and the position.

October 2025 demonstrated the second point sharply. Ethena's USDe held its dollar value in the wider market while trading down toward $0.65 in a thin book on a single venue, liquidating positions collateralised against that venue's own quote. The token's backing was intact; the price feed on one exchange was not.

Engine four: incentives, which are not yield at all

A protocol distributes its own token to depositors and quotes the result as an annual rate. It is a marketing expense denominated in something whose price the market decides, and it stops when the emission schedule ends or the token falls.

There is nothing wrong with taking it, as long as you sell the incentive promptly and never model it as durable income. The mistake is planning around a rate that exists to buy your deposit for a few months.

Rebasing, wrapping, and why your balance may not move

Yield reaches you in one of two ways, and the difference matters for both accounting and safety. A rebasing token increases the number of units in your wallet, so the balance grows while each unit stays worth a dollar. A wrapper token keeps the unit count fixed and lets the redemption value climb instead.

The wrapper design is generally easier to work with: it composes cleanly with lending markets and exchanges, which frequently mishandle rebasing balances, and it produces a single gain on exit rather than a stream of small accruals. If a protocol offers both forms of the same asset, check which one the venue you intend to use actually supports before depositing.

The questions to ask before depositing

• Which engine is producing this return, in one sentence?
• What is the scenario where it goes to zero, and how fast does it arrive?
• Can I withdraw during that scenario, or does the exit close first?
• Is the yield paid in the same dollar unit, or in a token whose price can fall?
• Who has custody of the assets doing the work — a chain, an exchange, or a company?

If any answer is unclear, the position is bigger than it looks, because unmeasured risk always sizes itself.

How to size it

Treat yield-bearing stablecoins as a category between cash and credit, not as cash. The extra return over a plain stablecoin is roughly the market's price for the extra risk, so a token paying eight per cent when Treasuries pay four is not free money — it is a judgement that the difference is worth taking.

A workable split for most people: keep the balance you might need within a week in a plain, well-attested stablecoin, and only put money you can leave alone into a yield product whose engine you can name. Our best stablecoins table scores reserve quality, attestation depth and redemption access, and why stablecoins depeg covers what happens when one of these engines stalls.