Stablecoins: How They Work and Where the Risk Lives
A stable price is an output, not a guarantee. To understand a stablecoin, trace the reserve, redemption path, issuer, network, and user’s actual route back to money.
A stablecoin is a token designed to track a reference value, most often one U.S. dollar. That simple interface hides a stack of institutions and technical systems: an issuer, reserve assets, banks or custodians, redemption rules, blockchains, smart contracts, exchanges, wallets, and market makers.
When the stack works, a user sees a token that stays near one dollar and can move at internet speed. When part of it fails, “stable” stops describing the user’s experience.
Stability comes from a mechanism
Stablecoins do not all maintain value the same way. The useful first split is between issuer-backed claims and market-structured mechanisms.
An issuer-backed stablecoin generally relies on reserves held outside the blockchain. The issuer creates tokens when eligible customers provide funds and destroys tokens when those customers redeem. Secondary-market users may buy and sell the token without ever interacting directly with the issuer.
Other designs rely more heavily on crypto collateral, liquidation systems, arbitrage incentives, or algorithmic supply changes. These systems may reduce dependence on a traditional issuer, but they do not eliminate dependence. They replace some institutional promises with collateral quality, oracle accuracy, contract behavior, governance, and market liquidity.
The design question is not “centralized or decentralized?” It is which dependencies exist, how visible they are, and what happens under stress.
The five-layer stablecoin map
1. The reference
What is the token trying to track: a U.S. dollar, another currency, a commodity, or a basket? “One token equals one dollar” may describe a target market price without describing an enforceable right to receive a dollar.
2. The reserve or collateral
For reserve-backed tokens, identify what the issuer says it holds, where it is held, how frequently it is disclosed, and whether reports are attestations, audits, or management statements. Cash, short-term government obligations, secured lending, corporate debt, and other assets behave differently under stress.
For crypto-collateralized designs, inspect collateral concentration, liquidation thresholds, oracle dependencies, and what happens when collateral and the stablecoin fall together.
3. Redemption
Redemption is the bridge between the token and the reference asset. Ask:
- Who has a contractual right to redeem directly?
- Is there a minimum amount, fee, delay, geography restriction, or identity requirement?
- Can ordinary holders redeem, or do they depend on exchanges and market makers?
- Can the issuer suspend or refuse redemption?
A liquid exchange market can make a token feel redeemable even when the user has no direct relationship with the issuer. That distinction matters when market liquidity fractures.
4. The ledger and contracts
The same stablecoin name may exist on several blockchains. BIS research notes that tokens on separate networks are not automatically interchangeable and can remain siloed without bridging or issuer support. Users also face smart-contract defects, chain congestion, validator failures, address mistakes, and bridge risk.
5. The access layer
Most users encounter stablecoins through an exchange, wallet, payment processor, or application. That intermediary adds custody terms, withdrawal limits, solvency risk, security practices, and jurisdiction. The token can remain fully functional while the platform holding it fails.
Where risk actually lives
Stablecoin risk is distributed rather than singular:
- Reserve risk: assets are insufficient, illiquid, encumbered, or misrepresented.
- Redemption risk: the holder cannot convert at par, promptly, or at all.
- Issuer risk: governance, operations, banking access, or legal authority fails.
- Market risk: secondary liquidity disappears and price deviates from the target.
- Technical risk: contracts, keys, networks, or bridges malfunction or are attacked.
- Intermediary risk: an exchange or wallet blocks access even though the token itself operates.
- Policy risk: rules change how the asset can be issued, held, transferred, or redeemed.
The BIS has argued that stablecoins demonstrate some potential for programmable payments while still falling short of foundational properties expected of money. The IMF likewise emphasizes that stablecoin effects depend on structure, adoption, regulation, and cross-border use—not merely market capitalization.
A better way to compare stablecoins
Do not begin with yield or popularity. Begin with a one-page dependency map:
- Issuer and governing jurisdiction
- Reference asset
- Reserve or collateral composition
- Direct-redemption eligibility and terms
- Latest independently produced reserve reporting
- Supported networks and contract controls
- Freeze, blacklist, upgrade, and governance authority
- Primary custody or access platform
- Historical deviations from the target
- Failure and recovery process
That map does not produce a single score, and it should not. Different uses tolerate different risks. A merchant accepting a short-lived payment, a treasury holding working capital, and a trader posting collateral do not have the same requirements.
Sources and scope
This field note draws on the BIS 2026 Annual Economic Report chapter on stablecoins, the IMF’s stablecoin work, and the SEC’s current crypto-asset taxonomy. It explains a framework; it does not recommend any stablecoin. This is general education, not financial, investment, legal, or tax advice.
Sources used in this field note
This material is educational and general. It is not financial, investment, legal, or tax advice.