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Stablecoins: How Tokens Try to Hold a Stable Value

A stablecoin is a transferable crypto asset that aims to track a reference value, commonly one unit of a national currency. Reserve-backed, crypto-overcollateralized and algorithmic designs use different mechanisms, so the shared label does not imply equal redemption rights or safety.

Timeline

  1. 2022-05-09: The TerraUSD algorithmic arrangement lost its peg during a rapid confidence and redemption spiral, illustrating that a stability mechanism can fail.
  2. 2023-07-17: The Financial Stability Board issued revised recommendations covering disclosures, reserve and stabilisation arrangements, legal claims and timely redemption.
  3. 2025-12-19: The IMF published a broad review distinguishing fiat-backed stablecoins from unbacked crypto assets and other forms of digital money.
  4. 2026-10-12: Current IMF, Federal Reserve, FSB and FDIC material was reviewed for this guide.

A stablecoin is a crypto asset designed to keep its price near a reference value, most often one U.S. dollar but sometimes another currency, commodity or basket. “Stable” describes the target, not a guarantee. Tokens can trade above or below that target, redemption can be delayed or restricted, and different products give holders different legal rights. Stablecoins are privately issued arrangements recorded and transferred on blockchains; they are distinct from central bank digital currency and from a conventional bank deposit represented on a new ledger. [1][2]

Fiat- or reserve-backed stablecoins are issued against assets held outside the blockchain, such as cash, bank deposits, short-term government securities or repurchase agreements. The issuer typically creates tokens when an eligible customer supplies money and destroys them when that customer redeems. Safety depends on whether reserves actually match outstanding claims, their credit quality and liquidity, custody and segregation, and the holder’s enforceable claim. A statement that reserves exist does not by itself establish who can redeem, at what price, on what schedule or in insolvency. [1][2][3]

Crypto-collateralized stablecoins hold assets on-chain, often in smart contracts. Because crypto collateral can move sharply in price, these systems commonly require collateral worth more than the stablecoins issued. Price feeds monitor the position, and falling collateral can trigger margin calls or automated liquidation. Overcollateralization provides a buffer but does not remove oracle failures, smart-contract flaws, congestion, governance changes or liquidation spirals. A hybrid can also combine traditional reserves, crypto collateral and derivatives, inheriting risks from several mechanisms. [1][2]

Algorithmic stablecoins rely mainly on rules and market incentives rather than a fully matched pool of redeemable reserve assets. A protocol may expand or contract supply, offer another token or promise future rewards when the price leaves its target. The mechanism works only while traders expect others to support the peg and the auxiliary token retains demand. If confidence and both token prices fall together, the incentives can weaken as selling accelerates. The Federal Reserve’s review of Terra’s 2022 collapse shows why code that targets a price cannot manufacture reliable collateral or confidence during stress. [2]

For reserve-backed coins, primary-market redemption and secondary-market trading are separate. Approved customers may mint or redeem directly with the issuer, often subject to identity checks, minimum sizes, fees, schedules and bank access. Most other holders buy or sell on exchanges or decentralized markets. Arbitrage can pull a secondary price back toward par: traders buy a discounted token to redeem it, or mint at par to sell a premium. That link weakens when direct redemption is unavailable, reserves are questioned, intermediaries pause service or transaction costs rise. [2]

A depeg can become a run. If holders doubt the reserve, custodian, issuer or redemption channel, each has an incentive to exit before others. Meeting redemptions may force reserve sales; losses or delays can deepen doubt and secondary-market discounts. International policy guidance therefore emphasizes transparent governance and financial condition, an effective stabilization mechanism, a robust legal claim and timely redemption at par for single-currency arrangements. Those are safeguards to examine, not features implied by the word stablecoin. [2][3]

Technical and operational risk sit beside financial risk. A holder may depend on the blockchain, wallet, smart contract, bridge, exchange, custodian, bank and issuer, each with separate failure, cyber and access risks. Transfers may be irreversible, private keys can be lost, networks can become congested and an issuer may freeze addresses under its terms or legal duties. Stablecoin rules and protections also differ by jurisdiction. In the United States, payment stablecoins are not federally insured deposits or guaranteed by the government, according to the FDIC’s description of current law. [3][4]

Before using a stablecoin, identify its reference asset and mechanism, then read who issues it, who holds reserves, their composition and maturity, how often reports are produced and whether they are independently examined. Check whether you personally can redeem, all fees and limits, insolvency treatment, supported networks, smart-contract audits, freeze controls and the risks of any exchange or bridge. Compare the purpose with regulated payment or savings alternatives. A token may settle quickly on-chain, yet its dollar-like value still rests on legal, financial, operational and market structures. [1][2][3][4]

Sources

  1. International Monetary Fund — Understanding Stablecoins
  2. Federal Reserve — The Stable in Stablecoins
  3. Financial Stability Board — High-Level Recommendations for Global Stablecoin Arrangements
  4. FDIC — An Update on Reforms to the Regulatory Toolkit

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