Stablecoins: how to evaluate them
Lesson 30 · practical guide
Evaluate the promise behind a stablecoin’s peg: backing, redemption, reporting, contract permissions, liquidity and behaviour under stress.
What you will learn
Evaluate a stablecoin by asking how redemption, reserves, governance and liquidity work in practice.
Key terms
- Redemption — exchanging the token with an issuer or mechanism for the reference asset.
- Collateral ratio — the value of collateral compared with the tokens it supports.
- Counterparty exposure — dependence on an issuer, custodian, bank or reserve manager.
Follow these steps
- Read the terms for who may redeem, at what price and with what restrictions.
- Check reserve composition, attestations, custody and the time between reports.
- Look for minting, freezing, blacklist and governance powers.
- Stress-test a 2%, 10% and 30% depeg and decide what action you could actually take.
Practical advice
A stablecoin can lose value through reserve problems, market liquidity, legal action, contract bugs or confidence loss. The reference price is an objective, not a guarantee.
Long-form explainer
The full guide
Read this lesson as a chapter: understand the mechanism, test the assumptions and apply the idea with a clear risk limit.
A stablecoin review goes beyond the peg chart
A token can trade close to one dollar while its redemption mechanism remains difficult to access. Investigate the issuer or protocol, reserve assets, collateral ratio, custodians, banking dependencies, freeze powers, governance and liquidity. Ask who may redeem, at what cost and in which circumstances.
Different designs fail in different ways. A reserve-backed token depends on the quality and availability of the reserve. A crypto-collateralised system depends on collateral value, liquidation and oracle design. An algorithmic system depends heavily on incentives and confidence. The label does not identify the risk by itself.
Stress the exit route
Imagine a fast fall in collateral, a bank closure, a chain outage and a rush to redeem. Which actor or contract processes the request, and what happens if everyone acts at once? Check whether the market price, redemption value and collateral value can diverge.
Use a stablecoin only for a purpose you understand, such as settlement or temporary liquidity, and keep exposure sized for the possibility of a depeg or frozen access. A stable reference value is not the same as a guaranteed cash balance.
What usually goes wrong
The most common mistake is judging a stablecoin by the peg chart. A flat line shows that the arrangement has held so far, which is the least informative fact available, because every stablecoin that later failed also had a flat line until it did not. The second error is not reading who can redeem. If redemption at face value is available only to large institutional clients, a retail holder's real exit is the market price on an exchange, which is a different promise entirely.
People also ignore the composition of reserves and their maturity. Short-term government debt behaves differently from commercial paper, secured loans or other crypto assets, particularly under stress. The last mistake is holding the entire balance in one issuer because it is convenient, and keeping it there indefinitely for a yield that is small relative to the risk being taken. Decide what the balance is for, how quickly you would need it, and what you would do in the first hour of a deviation, before that hour arrives.
How it works
Identify issuer, reserve assets, storage, reports and direct redemption rights. Inspect mint, burn, pause and freeze powers on the blockchain contract. Then check depth across venues and networks.
A token can look stable in normal conditions and become expensive or impossible to exit during stress. Include chain congestion, bridge exposure, fees and acceptance where you need to use it.
Worked example
Numbers make an idea concrete. Here is a small, illustrative one — not a forecast.
A token may trade at $1 on one venue and $0.97 on another because liquidity is fragmented. An average price does not guarantee redemption at par.
Before you act
Run through these questions before you commit any money or make a decision based on this lesson:
- What legal claim does a holder have?
- How are reserves reported?
- Can supply or addresses be changed?
- Where can I exit during stress?
Practice this lesson
Reading is a start; doing the exercise is what makes the idea stick.
Make a stablecoin risk card with issuer, reserve, redemption, permissions and exit liquidity. Update it when any fact changes.
Further reading
Educational content only: This guide is not personal financial, legal or tax advice. Markets involve risk, including the possible loss of capital. Verify current rules, fees and product availability in your country.