Why a High Crypto Yield Is a Red Flag, Not a Reward

A high advertised crypto yield is a warning sign, not a reward. Yield is the price of risk, so a rate far above what banks or bonds pay has to be manufactured by taking more risk with your money — and that risk is the part that can wipe out your deposit. If you are researching how to earn interest on crypto, learning to read a rate as information about danger is the single most protective habit you can build. This is education, not financial advice.

Yield is the price of risk

The core idea is simple: nobody pays a high return for a low-risk use of money, because they do not have to. Safe, liquid, well-secured lending is cheap, so it pays little. To offer a high yield, someone must be lending to riskier borrowers, using leverage, taking a directional bet, or subsidising the rate to attract deposits. In every one of those cases the extra yield is compensation for extra risk that lands on you. When you flip a high rate over and ask “what is being risked to produce this?”, you usually find the answer is your principal.

This is why comparing crypto yields the way you would compare saving rates is a trap. With insured bank accounts, a higher rate is simply a better deal, because the risk is (up to the insured limit) the same near-zero in both. With crypto, a higher rate is a different, worse deal wearing a bigger number, because the risk is not held constant — it is exactly what is changing.

Where the yield actually comes from

There are only a few honest sources of crypto yield, and each has a limit. Borrowers pay interest to borrow — real, but capped by how much borrowers will pay and how likely they are to default. A platform trades or lends with your coins — real, but only as reliable as its risk management. A protocol collects fees — real, but usually modest. And a project mints new tokens to hand out as “rewards” — this can produce eye-watering headline numbers, but it is often just inflation: you are paid in a token whose supply is ballooning, and the yield evaporates the moment the incentives stop or the token price falls.

The dangerous version is when there is no real source at all, and new deposits are simply used to pay the “interest” of earlier depositors. That is a Ponzi, and it can run for a surprisingly long time while deposits are growing. Understanding how a legitimate crypto interest account generates its yield is what lets you notice when a platform’s explanation does not actually add up.

The tell: “if you can't see the source, you are the source”

If a provider cannot explain where the yield comes from in one plain sentence, assume the source is you. Vague phrases like “proprietary strategies”, “market-neutral arbitrage” or “our trading desk” are designed to sound sophisticated while telling you nothing. A provider genuinely earning a return can describe it concretely: who borrows, at what rate, with what collateral, and what happens if they default. When the explanation is a fog, the most likely reality is that your deposit is funding someone else’s withdrawal, or someone else’s bet.

A rate that looks too good to be true is not an opportunity you found before everyone else. It is a risk everyone else priced correctly, and you are being offered the part they declined.

The history that proves the point

The clearest proof that a high rate signals risk is Anchor Protocol, which advertised around 19.5% on the UST “stablecoin”. That rate was a subsidy, not an earned return, and when it could no longer be sustained the whole system unravelled: UST lost its dollar peg in May 2022 and the linked LUNA token fell from roughly $80 to a fraction of a cent, wiping out about $50 billion. The people chasing that 19.5% were not being rewarded; they were standing closest to the exit that jammed. Our guide to stablecoin yield and depeg risk tells that story in full.

How to use a rate as a warning system

Turn the number into a question. When you see an advertised yield, ask what has to be true for it to be paid, and what happens to your deposit if that thing stops being true. Be most suspicious of rates that are fixed and guaranteed on a volatile asset, that are far above the rest of the market, that are paid in the platform’s own token, or that come with pressure to deposit quickly. And remember the numbers are not even stable — a rate can be cut the day after you deposit — which is one reason this site never publishes live APYs and never treats one as a promise.

When a rate crosses from merely aggressive into obviously impossible, you are usually looking at a scam. The red flags of a yield scam or Ponzi are worth memorising, because the same tells recur under new names every cycle.

The habit worth building

Whenever a rate catches your eye, pause and translate the number into a sentence about risk before you let yourself feel anything about the reward. A useful drill is to ask three questions in order: who pays this yield, what has to keep being true for them to keep paying it, and what happens to my deposit the day that stops being true. If you cannot answer all three, you do not understand the product well enough to fund it. This is not cynicism; it is the same discipline any lender applies before handing money over, translated into a market that dresses lending up as “earning”. The reason it works is that unsustainable schemes rely on you skipping exactly this step — on the big number triggering excitement faster than analysis. Slowing down costs you nothing but a little fear of missing out, and it filters out the majority of products that end in a total loss. The rate is either bait or information, and the sentence you write is what tells you which.

Comparing rates across providers deserves the same care. A platform advertising far more than its peers is not necessarily offering a better deal; more often it is signalling that it is taking more risk, subsidising the rate to grab market share, or paying in a token whose value it cannot control. When you line up several offers, treat the outlier at the top as the one to distrust most, not the one to pick. In a market where the honest return on low-risk lending is modest, the highest number in the room is usually the most expensive one to accept.