Are stablecoin yields safe?
No stablecoin yield is risk-free — every basis point above the prevailing T-bill rate compensates for credit, smart-contract, funding or token-price risk. Yields near 4-5% typically track Treasuries closely; yields above 10-15% have historically preceded either a collapse (Anchor Protocol's ~20% APY on UST in 2022) or a funding-rate reversal.
The baseline: what 'risk-free' actually pays
Short-dated US Treasury bills set the floor for what a genuinely low-risk dollar yield looks like — currently in the mid-single digits depending on the rate cycle. Any stablecoin or DeFi product advertising a materially higher rate is paying you for something beyond simply holding government debt, whether that's disclosed clearly or not.
The warning case: Anchor Protocol
Anchor Protocol advertised a stable ~19-20% APY on deposits of UST, the algorithmic stablecoin behind Terra, throughout 2021 and into 2022. That yield was subsidised by a reserve fund and new deposits rather than organic borrowing demand — a structure that could not survive sustained withdrawals. When UST depegged in May 2022, Anchor's yield and the entire $40B+ Terra ecosystem collapsed within days. The rate itself was the clearest warning sign available a year in advance.
A checklist before chasing yield
Before accepting any advertised stablecoin yield, identify the source precisely: is it Treasury interest, a lending spread, a funding rate, or token emissions? Each has a distinct failure mode, and 'the protocol is audited' answers a smart-contract question, not an economic one.
- Yield source disclosed and traceable to real cash flow, not just new deposits
- Pool size adequate for your allocation without moving the rate
- Underlying collateral and liquidation mechanics understood, not just the headline rate
- Historical drawdown or negative-funding periods checked, not just the current APY
Frequently asked
- What's a realistic 'safe' stablecoin yield today?
- Roughly the prevailing T-bill rate, delivered via a tokenized Treasury fund — anything materially above that carries additional, identifiable risk.
- Why did Anchor Protocol's yield collapse?
- It was subsidised rather than organically earned, and unravelled once Terra's UST stablecoin depegged in May 2022, triggering a full collapse of the ecosystem.
- Is a high APY always a scam?
- Not always, but it always means additional risk — funding-rate exposure, credit risk, or token-price risk in the payout currency. Verify the source before assuming it's simply free money.
- Are DeFi lending yields safer than algorithmic ones?
- Generally lower-variance since they're backed by overcollateralised loans, but they still carry smart-contract and liquidation risk, and yields compress sharply when borrowing demand falls.