Direct Answer
A stablecoin is a crypto asset designed to maintain a relatively stable value against a reference asset, most commonly the U.S. dollar near $1.00 per token. The name is a design goal rather than a guarantee, stablecoins can lose their intended value, become illiquid, or fail entirely depending on how they're backed.
Key Takeaways
- Fiat-backed, crypto-backed, commodity-referenced, and algorithmic stablecoins each maintain their peg through a different mechanism, with different failure modes.
- A stablecoin is not necessarily equivalent to cash in a bank account, its protections, redemption process, backing and legal treatment can differ.
- A depeg occurs when a stablecoin moves materially away from its reference value, which can be caused by reserve quality concerns, redemption delays, collateral losses, or market panic.
- A ten-point due-diligence checklist, issuer, backing, reserve location, reporting frequency, redemption access, and peg history among them, helps evaluate a stablecoin before relying on it.
What Is a Stablecoin?
A stablecoin is a crypto asset designed to maintain a relatively stable value compared with a reference asset or group of assets. The most common reference is a traditional currency such as the U.S. dollar, a dollar-referenced stablecoin may attempt to maintain a market value near $1.00 per token.
A stablecoin's name does not guarantee that its market price will remain stable. Stablecoins can lose their intended value, become illiquid or fail entirely. The Financial Stability Board has noted that the term does not itself imply that an asset's value will remain stable.
Why Are Stablecoins Used?
Stablecoins are commonly used to move funds between trading platforms, quote crypto trading pairs, hold value between trades, make blockchain-based payments, transfer dollar-referenced value, provide collateral, participate in decentralized finance, or settle transactions through blockchain networks.
A stablecoin is not necessarily equivalent to cash in a bank account. Its protections, redemption process, backing, liquidity and legal treatment can differ.
How Do Stablecoins Maintain Their Value?
Fiat-Backed Stablecoins
A fiat-backed stablecoin is designed to be supported by reserves such as cash, bank deposits, U.S. Treasury securities, short-term government instruments, or other liquid assets. Users depend on the issuer's reserve management, custody arrangements, disclosures and redemption process.
Crypto-Backed Stablecoins
A crypto-backed stablecoin may use other crypto assets as collateral. Because crypto collateral can be volatile, these systems may require overcollateralization, automated liquidations, price oracles, smart contracts and governance mechanisms, introducing collateral, liquidation, oracle and smart-contract risks.
Commodity-Referenced Stablecoins
Some tokens are designed to track commodities such as gold. These assets may depend on the issuer, storage arrangements, audits or attestations, redemption terms, custodian solvency, and the accuracy of ownership claims.
Algorithmic Stablecoins
Algorithmic stablecoins attempt to maintain a target price using automated supply changes, market incentives, linked assets or protocol rules. These designs can fail if confidence and demand decline faster than the mechanism can restore the target price.
What Is a Stablecoin Depeg?
A depeg occurs when a stablecoin moves materially away from its intended reference value. For a dollar-referenced stablecoin, examples could include trading at $0.99 temporarily, falling to $0.90 during a liquidity crisis, trading above $1.00 because of unusual demand, or permanently losing its intended peg.
A depeg can be caused by questions about reserve quality, redemption delays, banking or custodian problems, smart-contract vulnerabilities, collateral losses, market panic, insufficient liquidity, failed economic incentives, regulatory action, or exchange disruptions.
Stablecoin Risks: A Due-Diligence Checklist
Before using a stablecoin, evaluate:
- Who issues or controls it?
- What supposedly backs it?
- Where are the reserves held?
- How frequently are reserves reported?
- Can users redeem directly?
- Are redemptions restricted?
- Which blockchain networks support it?
- Can the issuer freeze addresses?
- Has it previously lost its peg?
- How much trading and redemption liquidity exists?
Three Designs That Share a Name and Little Else
The word stablecoin describes an objective rather than a mechanism, and the mechanisms behind it differ enough that treating them as one category is the root of most confusion here. Before holding any balance, establish which of the three designs it uses, because the question that matters next depends entirely on that answer.
For a reserve-backed token, the question is who holds the reserves, in what instruments, and whether you personally can redeem. For an overcollateralised token, it is what backs it, how much cushion exists and how liquidations behave when the collateral falls quickly. For a design that maintains its price through market incentives rather than assets, the question is what happens when participants stop supplying those incentives, and the historical answer has not been reassuring.
The misconception that recurs is treating any of these as equivalent to a bank deposit. Deposit insurance schemes generally do not cover token balances, redemption is often available only to approved institutional partners, and the operating entity may sit in a jurisdiction whose rules differ from yours.
Stability of price also does not imply stability of access. A token can trade at parity while transfers are paused, an issuer can freeze specific addresses, and the venue you hold it on can restrict withdrawals independently.
Stablecoin FAQs
What is a stablecoin?
A stablecoin is a crypto asset designed to maintain a relatively stable value compared with a reference asset, commonly the U.S. dollar.
Is a stablecoin the same as the U.S. dollar?
No. A dollar-referenced stablecoin is a crypto asset designed to track the dollar. It is not necessarily a bank deposit, physical currency or direct claim against the U.S. government.
Can a stablecoin lose its value?
Yes. Stablecoins can depeg because of reserve concerns, insufficient liquidity, failed collateral, smart-contract vulnerabilities, redemption problems, regulatory actions or loss of market confidence.
Who audits a stablecoin's reserves, and what does that report actually cover?
Most fiat-backed issuers publish attestations rather than full audits. An attestation is an accountant confirming that reserve balances matched a stated figure at a specific moment, based on information the issuer supplied. A full financial-statement audit is a broader examination with a formal opinion. Neither guarantees solvency between reporting dates, and the distinction is worth checking because the two are often described interchangeably in marketing material.
Can a stablecoin issuer freeze my balance?
Many of the largest fiat-backed stablecoins include a blocklist function in their contract that lets the issuer render specific addresses unable to transfer. Issuers describe this as a compliance and law-enforcement tool. Whether or not it is used against ordinary holders, its existence means that holding such a token is not equivalent to holding a bearer asset, and that property belongs in any assessment of the token as a cash substitute.
Why do stablecoins trade slightly above or below their reference value?
Small deviations are normal and reflect supply and demand on individual venues, transfer costs, and the friction of arbitrage. When the price sits below the reference value, someone who can redeem directly with the issuer has an incentive to buy and redeem, which tends to close the gap. That correction depends on redemption actually being available and cheap, which is why deviations widen when redemption is restricted or slow.
Do stablecoins pay interest to holders?
The token itself does not accrue anything. Yield offered on stablecoin balances comes from the platform holding them, whether by lending the balance out, deploying it in a protocol, or sharing revenue the issuer earns on reserves. Each of those introduces a counterparty or smart-contract risk that a plain wallet balance does not carry, so an advertised rate should be read alongside a description of where the return comes from.
What is the difference between a stablecoin and a tokenized money market fund?
A stablecoin is typically a liability of its issuer that the issuer promises to redeem at a fixed reference value. A tokenized money market fund is a share in a regulated fund, with a net asset value that can move and with the disclosure and custody arrangements that fund regulation requires. They can look similar in a wallet while sitting in different legal categories, which affects what happens to holders if the sponsor fails.
Are all stablecoins pegged to the U.S. dollar?
No. Tokens referencing the euro, other national currencies, and gold all exist, though dollar-referenced tokens dominate trading volume by a wide margin. A non-dollar stablecoin carries the same design questions as a dollar one, plus thinner liquidity in most trading pairs, which can make entering and exiting a position more expensive than the headline peg suggests.