High yields in crypto always grab attention. A protocol flashing 40% APY looks tempting, but let’s be honest, that kind of return is rarely “free money.” In most cases, it comes from somewhere, and understanding the mechanics is what separates smart investors from those who end up as exit liquidity.

When you see numbers that high, it’s often tied to leverage. Someone down the line is borrowing aggressively, and the yield you’re collecting is basically the reward for taking on their risk. It works until it doesn’t, when liquidations or market volatility hit, the structure holding that yield together can collapse quickly.

Another source is incentives. Protocols launch with native tokens and hand them out like candy to attract liquidity. On paper, that creates the appearance of sky-high APY. But those rewards are funded by emissions, and emissions mean dilution. Over time, the value of the token being given out can drop faster than the yield you’re earning. You might collect more tokens, but each one is worth less.

Then there’s the reality of unsustainable models. A platform can promise crazy returns in the short term, but if the flow of new money slows down, the payouts shrink. We’ve seen it play out with several DeFi projects that soared on hype, only to fade once rewards dried up.

This isn’t to say high yields are always bad. In the early stage of a project, incentives can make sense, they bootstrap liquidity, attract users, and create momentum. But the smart move is asking where the yield comes from, how long it can last, and whether the underlying economics make sense.

The truth is, in crypto, nothing comes without risk. A 40% APY might look like easy money, but it usually means you’re being paid to hold someone else’s bag of risk.