The risk inside exchange yield products: what sits behind the APY
A percentage on a card tells you what you are being offered. It tells you nothing about what has to keep working for you to actually receive it — and that second thing is the entire product.
In one line: yield is compensation for a risk someone is taking. If you cannot name the risk, you are still taking it — you just do not know which one.
The most common mistake: confusing a yield denominated in a volatile asset with a return. Earning 8% more of a token that fell 30% is not an 8% gain, and the headline number never says which one it is.
Where the yield actually comes from
Every yield has a source. There are not many, and knowing which one you are in tells you most of what you need.
| Source | What it really is | What can go wrong |
|---|---|---|
| Lending to borrowers | You lend; borrowers pay interest | Borrowers default, or their collateral fails to cover in a fast move |
| Staking | Protocol rewards for securing a network | Penalties for validator misbehaviour, unbonding delays, and the asset's own price |
| Market-making or basis trades | A strategy run with pooled funds | The strategy stops working, or loses. Correlated with exactly the conditions in which you want your money back |
| Promotional subsidy | Marketing spend, paid as yield | Nothing, until it stops — which it does, usually without notice, and often at a cap you did not read |
Two useful conclusions. First, a high advertised rate on a headline product is very often the last row — a promotional rate on a capped amount for a limited period, presented at the same visual weight as a structural one. Second, none of these sources is inherently unacceptable; the problem is only ever taking a risk you did not know you had taken.
If the product documentation does not let you determine which row you are in, that itself is the answer.
Denominated yield is not a return
This is the single most expensive misunderstanding in the category, and it survives because the interface never corrects it.
A product paying 8% on a token pays you 8% more of that token. If the token is worth 30% less by the time you get it back, you hold more units of something worth less, and you are down. The yield did exactly what it advertised. Your position still lost money.
So the first question about any yield is: denominated in what? A yield on a stable-value asset and a yield on a volatile one are different products even at the same headline number, and the difference is usually larger than the number.
The same applies to products that pay you in a different asset than the one you deposited, and to any product where the redemption is in units rather than value. Read the redemption terms, not the rate card.
What a lock-up really costs
Fixed-term products pay more than flexible ones. What you are selling for that premium is the ability to act.
The cost is not theoretical, and it is not evenly distributed across time. It is concentrated precisely in the scenarios where it hurts: you cannot exit during a crash, and you cannot exit if you need the money. A lock-up is fine for capital you were genuinely not going to touch. For anything else, the extra yield is being paid for an option you may badly want back.
Check three specifics before agreeing to any term:
- Is early redemption possible at all, and on what terms? Sometimes it forfeits accrued interest; sometimes it is simply not available.
- How long does redemption actually take? Staking products in particular can have unbonding periods measured in days, during which you are exposed to price and can do nothing.
- Does it auto-renew? A term that rolls over by default can turn a decision you made once into a position you did not re-examine.
The risk that applies to all of them
Whatever the strategy, one thing is common to every product in this category: the assets are not in your control while they are deposited. They are an entry in a platform's ledger and a claim against it.
In normal conditions this is invisible. It matters in exactly the situations these products are least likely to advertise — a platform under stress, redemptions suspended, or a counterparty failing. The lesson from every cycle is the same: the moment everyone wants their money back is the moment the withdrawal button stops working, and the products with the highest yields are disproportionately the ones affected.
This is not a claim about any particular platform. It is a structural property of depositing assets with someone else, and the sizing rule that follows from it is the useful part: do not put an amount into a yield product that you could not absorb losing entirely. Not because loss is likely, but because the alternative is a position whose worst case you have not priced.
If holding your own keys is the alternative you are weighing, it has its own, different failure modes — see Web3 wallet versus exchange account. Neither option is the safe one; they fail in different directions.
Four questions before you commit anything
- Where does the yield come from? Name the mechanism. If the documentation does not say, treat it as the promotional row and size accordingly.
- Denominated in what, and redeemed in what? Volatile-asset yield is not a return until you have converted it and still have more value than you started with.
- How and when can I get out? Early redemption terms, unbonding periods, auto-renewal.
- Is the advertised rate structural or promotional, and capped at what? Headline rates are frequently limited to a small first tranche, with the remainder earning far less.
Answering these takes ten minutes and is the entire due diligence most people skip. A product whose documentation makes it hard to answer them has told you something.
Words that should stop you
The US Federal Trade Commission's consumer guidance on crypto scams identifies a consistent vocabulary, and it holds up. Any of these should end the conversation:
- "Guaranteed" or "risk-free" return. No such thing exists in this asset class, at any yield.
- "Capital protected." Ask by whom, backed by what, and enforceable how.
- Urgency. Limited slots, closing soon, act now. Manufactured pressure exists to prevent the four questions above.
- A yield far above everything comparable. Not proof of fraud, but it is proof that a risk is being taken. Find out which one.
- Returns paid for introducing others. That is not a yield product, and the structure has a name.
Our own position, since this page is otherwise all questions: we treat flexible, stable-denominated products with a clearly stated mechanism as an ordinary cash-management decision, and everything else as a position that needs the same sizing discipline as a directional trade. The reason is not that the other products are frauds — it is that a yield you cannot explain is a risk you cannot size, and unsized risk is how accounts end.