A stablecoin may target a stable price, but a product paying yield on that stablecoin is not automatically a savings account. The return comes from somewhere: a borrower, trading activity, protocol incentives, reserve income or a combination of sources. Each source creates a different path to loss.
Before comparing annual percentage yields, trace the structure underneath the number. These seven checks turn a promotional rate into a risk map.
Check 1: Understand the stablecoin itself
Yield risk begins with the asset being deposited. Identify the issuer, redemption process, reserve composition and publication schedule. A fiat-backed token, an overcollateralised crypto token and an algorithmic design do not share the same failure modes.
Ask who can redeem directly and under what conditions. A token can trade near its target during normal markets yet separate from that target when redemption access, reserve confidence or exchange liquidity weakens. Yield earned in the token does not help if the token itself loses significant value.
Check 2: Find the real source of the yield
“Earn” is a product label, not an explanation. Determine whether your assets are lent to retail borrowers, market makers or institutions; supplied to an on-chain pool; used in trading strategies; or rewarded with newly issued tokens.
A rate funded mainly by token incentives can fall when those incentives end or the reward token declines. A lending rate depends on borrower demand and repayment. A strategy rate may add leverage, duration or market exposure that is not obvious from the stablecoin balance shown in an app.
If the provider cannot explain the source in plain language, the rate is not measurable enough to compare.
Check 3: Identify your counterparty
In a custodial account, the platform controls the deposited assets and may lend or deploy them. Read what happens if a borrower defaults or the company enters insolvency. Investor.gov warns that crypto interest-bearing accounts do not offer the same protections as bank or credit-union deposits and can expose customers to platform failure or bankruptcy.
In DeFi, code may replace a central lender, but counterparties still exist. They include borrowers, oracle providers, bridge operators, stablecoin issuers, governance participants and developers with upgrade keys.
Write down every entity or mechanism that must work for withdrawal to succeed. The longer the dependency chain, the more places a failure can occur.
Check 4: Inspect collateral and liquidation rules
Overcollateralisation reduces credit risk only when collateral is valuable, liquid and sold fast enough. Check which assets borrowers can pledge, the required ratio, oracle design and liquidation mechanism.
Correlated collateral is particularly important. A loan can look overcollateralised until the collateral and deposited stablecoin weaken together. During a fast market, network congestion and thin liquidity can make liquidations less effective than a calm-period model suggests.
For an opaque custodial product, limited collateral disclosure should be treated as uncertainty, not safety.
Check 5: Separate custody from smart-contract risk
Custodial yield requires trust in the platform’s financial condition, security and withdrawal policy. On-chain yield introduces smart-contract, oracle, governance and interface risks. Neither model removes risk; each moves it.
Ethereum’s developer guidance notes that smart contracts can control large amounts of value and may be difficult to patch after deployment. An audit can reduce uncertainty but cannot prove that code is flawless. Review contract age, independent assessments, upgrade controls, incident history and whether emergency powers are concentrated in one key.
If a position requires a bridge, count the bridge as another security boundary.
Check 6: Test liquidity and exit conditions
An advertised balance is not the same as cash available now. Look for lockups, notice periods, daily limits, withdrawal fees and conditions allowing the provider to pause redemptions.
In DeFi, compare your position with available pool liquidity. A large displayed APY can appear precisely because liquidity is scarce. Exiting a concentrated position may create slippage, while a stressed stablecoin can make everyone seek the same exit simultaneously.
Before depositing a meaningful amount, test a small deposit and withdrawal through the complete route. This checks execution, not future solvency, but it catches network, address and account problems early.
Check 7: Model the return after all costs
Convert the headline rate into the asset you actually care about. Subtract platform fees, network costs, swap spreads, bridge fees and applicable taxes. Separate base yield from temporary token rewards.
Then model bad outcomes. What happens if the stablecoin trades 5% below target, rewards stop, a withdrawal costs more than expected or access is delayed for a month? A modest yield can be erased by one small depeg or one forced conversion.
Do not use emergency savings or borrowed money. Diversification can reduce dependence on one issuer or platform, but spreading funds across several products built on the same stablecoin, bridge or oracle may create the illusion of diversification.
A one-page decision rule
Do not deposit until you can answer:
- What stabilises the token?
- Who pays the yield?
- Who owes me assets?
- What collateral supports that obligation?
- Which contracts, bridges and administrators can affect access?
- How and when can I exit?
- What is the net return after realistic costs and stress?
If one answer is unknown, lower the amount or walk away. Yield is compensation for capital, liquidity, credit, technology or operational risk. It is never evidence that those risks disappeared.
This guide is general education, not financial, tax or investment advice.
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Sources and review
This article was checked against the primary or authoritative sources below on .
- Investor Bulletin: Crypto Asset Interest-bearing Accounts — Investor.gov
- Exercise Caution with Crypto Asset Securities — Investor.gov
- Smart contract security — ethereum.org
Frequently asked questions
No. Crypto lending and DeFi products can expose depositors to issuer, borrower, platform, smart-contract and liquidity risks without bank-deposit protections.
Rates can respond to borrowing demand, incentives, collateral conditions, liquidity and platform policy. A temporary promotional rate may not reflect sustainable income.
Yes. Reserve, redemption, market-liquidity, operational or confidence problems can cause a stablecoin to trade below its target value.
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