How Stablecoins Work: Reserves, Redemption and Depeg Risk
A token targeting one unit of currency is not automatically bank money or a central-bank liability. Stability can depend on reserves, an issuer, custodian, bank, redemption eligibility, market makers, exchanges, blockchains and bridges. This guide reads a stablecoin through its balance sheet and cash-flow route: who holds what, who can redeem at par and where the path can stop under stress.
Who this guide is for: People using stablecoins for transfers, collateral, trading quotes or temporary balances
Key points to understand first
- A peg is a target, not necessarily an issuer or government guarantee of principal.
- Review reserve quality, custody, liabilities, redemption eligibility, timing, minimum and fees together.
- Secondary prices depend on market making and arbitrage; a closed redemption route can amplify depegging.
- A native token and a bridged token with the same ticker can have different contracts and counterparties.
The route back to par has several dependencies
- Reserve assetsCash, bills, deposits or crypto collateral
- Custodians/banksTitle, segregation and operating hours
- Legal termsHolder rights and redemption eligibility
Connect liabilities to token supply
- Primary redemptionExchange with issuer at stated terms
- Secondary liquidityExchange, DEX and market-maker routes
- Cross-chain routeBridge, wrapped token and finality
A stablecoin design tries to restore a price rather than freeze it
A stablecoin is a crypto asset designed to keep value near a reference such as a fiat currency, commodity or basket. A one-dollar target does not automatically provide the same legal claim, deposit insurance or settlement as dollars in a bank or central bank money. Reserve-backed, crypto-collateralized and algorithmic models use different issuers, collateral, liquidation and redemption paths.
Arbitrage is a central restoring mechanism. If eligible customers can issue or redeem at one dollar, price differences create an incentive to adjust supply. But that path can fail when redemption is restricted, minimums are high, banks are closed, reserve assets cannot be sold or a blockchain is unavailable.
| Model | Value support | Main failure paths |
|---|---|---|
| Fiat/reserve-backed | Issuer reserves and redemption promise | Reserve shortfall, bank/custodian, legal claim, run |
| Crypto-collateralized | On-chain collateral and liquidation | Collateral crash, oracle, congestion, governance |
| Algorithmic/partially backed | Incentives, another token and supply adjustment | Confidence loss, reflexive selling, liquidity |
| Wrapped/cross-chain | Original token plus bridge custody or messaging | Bridge exploit, chain halt, broken redemption |
Verify the individual contract, collateral and rights within each category.
Read reserves by amount, quality, maturity, title and liquidity
Classify cash, deposits, short government bills, repo, commercial paper, bonds, crypto and loans. Beyond whether fair value exceeds token liabilities, review volatility, maturity, credit, concentration, currency, haircut, encumbrance and custodian. Funding immediate redemption with long or risky assets creates an asset-liability mismatch under a run.
An attestation applies procedures to a defined statement at a point in time; it is not automatically a full financial-statement audit or continuous assurance. Read the reporting entity, accounting basis, liability scope, subsequent events, independence, frequency and publication lag. On-chain reserve wallets cannot alone prove off-chain liabilities and bank deposits.
reserve coverage = eligible reserve fair value ÷ redeemable token liabilitiesliquid coverage = same-day liquid reserves ÷ plausible same-day redemptionsduration gap ≈ reserve asset duration − redemption liability durationDefinitions of eligible value and plausible redemptions determine the result.Identify the subject in “redeemable one for one”
Determine whether a retail holder can redeem directly or only an approved institutional customer can. Minimum, fee, bank account, country, business day, processing time, sanctions review, freeze, blacklist, termination and error handling matter. Selling near one in a secondary market is not the same as an enforceable claim on the issuer.
Read whether a token holder owns any reserve asset, has a contractual claim on the issuer, or has no direct claim. Segregation, trust, security interest, governing law and insolvency priority matter if a bank, custodian or issuer fails. Where marketing and terms differ, record the legal terms and unresolved questions.
Treat a price gap as a symptom and identify the cause
Depegging can reflect uncertainty, reserve concerns, bank or custodian issues, redemption delay, chain congestion, bridge failure, a large sale, thin liquidity, oracle error or regulatory action. The same 0.98 price can represent a time discount on a credible redemption, uncertain credit recovery or a venue-specific liquidity shock. Compare venues, on-chain pools, primary redemption and reserve disclosure.
A premium above one is not proof of safety either. It can arise from restricted fiat access, withdrawal limits or a short squeeze. Track spread, depth, volume, venue concentration, oracle values and redemption queues instead of one average price.
- Separate price sources
Compare exchanges, DEXs, oracles and issuer redemption with timestamps.
- Read official status
Save issuer, bank, custodian, chain and bridge notices.
- Inspect redemption
Update eligibility, minimum, fee, queue and timing.
- Map reserve exposure
Identify amount and coverage related to the problem asset or bank.
- Use prewritten controls
Act from concentration and stop conditions rather than panic.
Manage native and bridged versions as distinct assets
An issuer can mint natively on several chains, or a bridge can lock an original token and mint a wrapped version. The latter adds the bridge contract, validator or multisig, message verification, destination chain and liquidity provider to issuer risk. Verify the contract against the issuer’s supported-chain list rather than a wallet symbol.
A bridge incident can break conversion of the wrapped token even while source-chain reserves remain healthy. Apply the smart-contract and bridge checklist to lock/mint, burn/mint or liquidity design, upgrade keys, pauses, withdrawal delays, audits, bounties and incident response.
- Asset identity: Record chain ID, contract, issuer and bridge together.
- Exit route: Test exchange deposits, DEX liquidity and bridge redemption separately.
- Concentration: Aggregate exposure by issuer, bank, bridge and chain.
- Fee reserve: Keep the native coin required to exit.
Define different stop conditions for cash parking, transfer and collateral
A short trading quote, long-term cash substitute and DeFi collateral have different holding periods and dependencies. DeFi adds protocol, oracle, liquidation, contract and governance risk. A high yield is not simply interest on cash; it may compensate lending, liquidity provision or new-token incentives.
A fiat-referenced token carries exposure to that reference currency. A JPY-based user holding a USD token has USD/JPY risk even if the token stays at USD 1. Use the exchange-rate drivers guide and Macro Research Workbench to keep currency exposure separate. For commodity-backed tokens, use the verified Commodities category and metals price-formation guide for the underlying market.
Use the Financial Templates Hub to record issuer, reference, contract, reserve report, redemption terms, bank or custodian, bridge, use case, concentration limit, stop condition and review date. Reserves and terms change, so review cannot be one-off.
Frequently asked questions
Is a stablecoin always worth one dollar?
No. It targets a reference but can trade at a premium or discount when reserves, redemption, liquidity, issuer, banking, chain or bridge paths are impaired.
Is 100% reserve coverage enough?
No. Review reserve quality, title, segregation, maturity, liquidity, liability scope, redemption eligibility, custodian and assurance scope.
Is an attestation the same as an audit?
Usually not. An attestation covers a defined statement and procedure at a point in time. Read the report’s scope rather than assuming full financial-statement assurance.
Are same-ticker stablecoins on different chains identical?
Not necessarily. One can be natively issued and another bridged or wrapped, adding different contracts, counterparties and exit routes.
Primary sources and verification links
- BIS Bulletin 108 | Stablecoin growth — policy challenges and approachesStablecoin issues involving reserves, monetary sovereignty and financial-system linkages
- Financial Stability Board | Global Regulatory Framework for Crypto-assetsGlobal framework addressing client-asset safeguards, conflicts, disclosure and cooperation
- FATF | Updated Guidance for Virtual Assets and VASPsRisk-based guidance covering VASPs, P2P transactions, stablecoins and the travel rule
- IMF | Elements of Effective Policies for Crypto AssetsPolicy framework for classification, legal certainty, financial stability and user protection
- Japan FSA | List of Registered Crypto-asset Exchange Service ProvidersOfficial entry point for Japan’s list of registered crypto-asset exchange service providers
Edited and published by: SG Group · Editorial approach: We prioritize primary materials from central banks, regulators and international institutions. Rules, product terms and release times can change, so verify current information at the linked source and with your provider before acting.
Important notice: This article is general education about crypto assets, blockchains, wallets and related services. It is not investment, legal or tax advice; a recommendation of any token, exchange, wallet or protocol; a trading signal; a price forecast; or a guarantee of profit or principal. Crypto assets can lose some or all value through volatility, lost keys, mistaken transfers, fraud, smart-contract failure, depegging, illiquidity, provider insolvency, or regulatory and tax changes. Figures are fictional learning examples unless expressly identified otherwise. Before use, verify the network, contract address, fees, registration or regulatory status, terms and tax treatment with primary sources and qualified professionals.