What it means
The problem stablecoins solve is practical. Traders and businesses wanted a way to move value on blockchain networks without holding an asset that might fall 20% overnight, and a token pegged to a familiar currency provides that.
The dominant design is fiat-backed: for every token issued, the issuer holds a dollar or an equivalent safe asset, and anyone holding tokens can hand them back for cash. That makes the issuer economically similar to a narrow bank or a money market fund, earning interest on the reserves while paying nothing to token holders.
Two other designs exist and behave differently. Crypto-collateralised coins are backed by other digital assets deposited well in excess of the tokens issued, typically 150% or more, while algorithmic designs attempted to hold the peg through trading incentives alone and have failed badly enough that few remain in serious use.
The peg is a promise rather than a law of nature, and it holds only while the market believes redemption will work. Tokens have traded below a dollar when reserves were held at a bank in difficulty or when the composition of those reserves was unclear, and confidence returns only when independent evidence of the assets appears.
Regulation has moved towards treating large stablecoin issuers much like payment institutions, with requirements to hold reserves in genuinely liquid form, to segregate them from the issuer's own money and to publish regular attestations of what is held. For a business considering accepting stablecoins, those three points are the ones that matter more than the technology.
The commercial appeal is speed and cost on cross-border payments, where settlement can happen in minutes for a fraction of a bank transfer fee. The counterweight is that a stablecoin balance is a claim on a private company, not a bank deposit, and it usually carries no deposit insurance of any kind.
In practice
Real-world examples.
Example
A freelance developer in Argentina invoices a client in Berlin and asks to be paid in a dollar stablecoin. The payment arrives in under an hour for about $2 in network fees, compared with three days and roughly $45 through the banking system, and it shields the developer from local currency depreciation.
Example
A crypto trading desk keeps its idle balances in a stablecoin rather than converting back to dollars at a bank each evening. This lets it move into positions within seconds at any hour, at the cost of holding a claim on a private issuer rather than an insured deposit.
Example
A commodities trader piloting stablecoin settlement with three suppliers writes a policy limiting the balance held overnight to $2 million and requiring monthly review of the issuer's published reserve reports. The treasurer treats the exposure as counterparty risk on the issuer rather than as cash.
Think of it
“Stablecoin is a cryptocurrency that stays stable-pegged to a stable asset like the dollar.
Formula
Calculation
Reserve coverage ratio = value of reserve assets / value of tokens in circulation
An invented issuer, Anchorpoint Digital, has 4,000,000,000 tokens outstanding, each meant to be worth $1. Its reserves are $4,020,000,000 held in bank deposits and short dated government bills, so the coverage ratio is $4,020,000,000 / $4,000,000,000 = 100.5%, a surplus of $20,000,000 above the tokens issued.
Suppose interest rates rise and the $250,000,000 portion of the reserves held in slightly longer bonds falls 4% in value, a loss of $250,000,000 x 0.04 = $10,000,000. Reserves become $4,020,000,000 - $10,000,000 = $4,010,000,000, and the coverage ratio falls to $4,010,000,000 / $4,000,000,000 = 100.25%, still above the peg but with the cushion halved.
The real test is a redemption run. If holders of 30% of tokens ask for cash within a week, the issuer must find 0.30 x 4,000,000,000 = $1,200,000,000 in a few days, which is only possible if that much of the reserve genuinely sits in cash or bills that can be sold immediately without loss.Case study
Seen in the real world.
The following is an illustrative and entirely fictional example. Vantpoint Logistics, an invented freight broker, began settling with its Southeast Asian carriers in a dollar stablecoin and cut payment times from four days to under an hour. Within a year roughly $18 million a month moved this way, and the treasury team routinely left balances of $3 million to $5 million in the token over weekends.
Rumours then circulated that a bank holding part of the issuer's reserves was in difficulty, and the token traded at $0.96 for two days before recovering. Vantpoint's balance of $4.2 million was briefly worth about $4.03 million, and two carriers refused to accept the token until the issuer published a fresh reserve report.
In this fictional case nothing was ultimately lost, but the treasurer rewrote the policy anyway. Balances were capped at one week of payments, the issuer's reserve reports became a monthly board item, and the exposure was reported as a receivable from a financial counterparty rather than as cash.
Watch out
Common mistakes.
- Treating a stablecoin balance as equivalent to money in a bank account, when it is an unsecured claim on a private issuer with no deposit protection behind it.
- Assuming every stablecoin is backed the same way, when reserve quality ranges from short dated government bills to other volatile digital assets.
- Ignoring the peg risk because the price has held for years, when the loss of a peg is exactly the kind of event that is rare until it is not.
Questions
People also ask.
Who earns the interest on the reserves?
The issuer does, which is the main source of its revenue, and holders of the tokens generally receive nothing.
What actually happens if a stablecoin loses its peg?
Holders can usually still redeem at $1 if the reserves are sound, so the market price often recovers, but if the reserves are impaired the shortfall falls on holders.
Is a stablecoin the same as a central bank digital currency?
No; a stablecoin is issued by a private company against its own reserves, while a central bank digital currency would be a direct liability of the central bank itself.
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