What Is a Stablecoin? Pegs, Reserves and Risks Explained

A stablecoin is a crypto token designed to track the value of a reference asset, commonly one US dollar. It is a price target, not a promise that you can always sell the token for $1, withdraw immediately or avoid losses. The reserves, redemption rights and platform holding it determine how that target is supported.

This guide explains dollar-linked stablecoins, with US consumer and regulatory context checked September 8, 2026. Other currencies and jurisdictions have different rules. It is a guide to understanding the product, not a ranking of coins or yield offers.

Three ways a stablecoin can support its peg

The Federal Reserve staff's explanation of stabilization mechanisms distinguishes assets held outside a blockchain, crypto collateral and designs relying on supply incentives. Those distinctions matter more than the word “stable” in a token's name.

The categories describe mechanisms, not a safety certification. In particular, an algorithm is not a substitute for assets that can meet redemptions during stress.

How does a stablecoin stay near $1?

Separate issuance and redemption from market trading. An issuer may create tokens when an eligible customer supplies dollars, and remove tokens when that customer redeems. On an exchange, another buyer or seller sets the price you can actually trade at.

The Federal Reserve's primary-versus-secondary-market study explains why access matters. A participant able to buy below $1 and redeem at $1 has an incentive to trade the gap. That pressure can help the peg, but fees, delays, eligibility and doubts about repayment can weaken it. A retail holder may have to sell through an intermediary instead of redeeming directly.

This is why a $1 issuer redemption policy and a $0.97 exchange quote can coexist. The quoted discount does not by itself tell you whether reserves are missing, a payment channel is temporarily constrained, or the market has lost confidence.

USDC is an example, not a template for every coin

Circle's reserve page describes USDC backing that includes bank deposits, short-term Treasuries and overnight reverse repos, with much of the reserve held through a government money market fund. That is different from saying every dollar sits as physical cash or in your own bank account.

Circle publishes reserve information and monthly independent assurance reports. Read the report's date, assets covered and conclusion. An examination of reserves at specified dates does not answer every question about an exchange's solvency, future liquidity or a holder's withdrawal access. Payney has not audited Circle or its reserves.

The USDC terms for holders outside the EEA condition direct redemption on eligibility and registration for Circle Mint. Do not generalize those conditions to EEA holders, whose documents differ. More broadly, identify who owes you redemption and whether your account can use that route.

Is a stablecoin the same as money in a bank?

No. The FDIC lists crypto assets among products it does not insure. Holding a token whose reserves include bank deposits does not make the token your own insured deposit. Insurance against an eligible bank failure also differs from protection against a crypto platform failing or blocking withdrawals.

A tokenized bank deposit is a different claim again. The Federal Reserve staff's September 2026 comparison distinguishes bank deposit liabilities from stablecoins and tokenized money market fund shares. Putting a financial claim on a blockchain does not make these products interchangeable.

For ordinary cash-account features and insurance categories, use our savings-account explanation. When planning an emergency reserve, assess accessible spending cash rather than assuming a token's target price guarantees availability.

What happens when a stablecoin loses its peg?

Past events had different outcomes and causes. The Federal Reserve's 2024 study documents USDC's March 2023 price dislocation after news about reserves at Silicon Valley Bank. Separately, the SEC's Terraform case summary describes UST's May 2022 depeg and collapse toward zero. A temporary dislocation in one product does not prove another will recover.

For the middle row: 2,000 × $0.97 − $5 = $1,935. These are hypothetical executable prices and costs, not current quotes or probabilities. The example assumes a sale is available for the entire balance, excludes entry costs and taxes, and does not model a withdrawal suspension. A token count of 2,000 is not the same as $2,000 available to spend.

Where does stablecoin yield come from?

Circle's USDC terms say holding USDC itself does not entitle the holder to interest earned on reserves. An app offering a reward or a lending protocol advertising a return adds a separate arrangement. Ask who pays, what generates the return, whether assets are lent onward, and what conditions restrict withdrawals.

Compare the whole position: the token, the custodian or wallet, and any yield program. A reserve report for the token issuer does not verify the program's borrower quality. A high advertised percentage cannot tell you the probability of a loss. Neither the peg nor a past payout establishes a future return.

Risks beyond the market price

Circle's risk disclosures describe price fluctuations on third-party platforms, blocked addresses and operational delays. A token can trade close to $1 while a particular holder cannot transfer or redeem it. Sending to the wrong destination can also produce a loss even if the peg holds.

Check the exact asset and network your provider supports. A familiar ticker is not enough to establish who issued the token or which redemption arrangement applies. Read the issuer and platform terms together; neither a logo nor the use of a blockchain establishes identical protections.

For a store accepting payments, compare the customer-resolution process too. Our merchant guide to chargebacks versus refunds explains the distinction between a card dispute and a merchant-initiated return of funds.

What changed with US stablecoin regulation?

The OCC's GENIUS Act bulletin identifies July 18, 2025 as enactment and describes a framework for permitted payment stablecoin issuers. It sets an effective-date formula tied to enactment and final implementing regulations; enactment is not the same as every provision operating immediately.

The February 2026 OCC document is a proposal covering reserves, redemption, supervision and other requirements. Treat proposed deadlines as proposals, and verify current rules and issuer status for the actual product. The existence of a regulatory framework does not establish that every token called a stablecoin is approved or deposit-insured.

Five questions before relying on a stablecoin

1. What asset does it track, and what reserves or mechanism support that target?
2. Who can redeem directly, under which jurisdiction's terms, at what cost and on what timetable?
3. Who holds the token for you, and what happens if that platform suspends withdrawals?
4. Does any advertised yield come from a separate lending or rewards agreement?
5. What cash could you access if the price fell or the usual exit route stopped working?

Answer those questions for the specific product and account. The word “stablecoin” identifies an intended price relationship; the documents and operating arrangements explain what you actually hold.