A stablecoin is a type of cryptocurrency designed to hold a steady value by tracking a reference asset, most often a fiat currency such as the US dollar. The aim is to combine the fast, programmable transfer of a digital token with price stability closer to traditional money, so each coin is meant to be worth roughly one unit of the asset it tracks.
How Do Stablecoins Stay Stable?
Most stablecoins keep their peg through reserves or rules. A fiat-backed coin holds reserves — cash and short-term instruments — intended to match the coins in circulation, so each token can in principle be redeemed for one dollar.
Others are crypto-collateralized, backed by a surplus of other digital assets, or algorithmic, using supply rules to nudge the price toward the peg. The reserve-backed model is the most widely used and the easiest to understand.
Why Do Stablecoins Matter?
Stablecoins are widely used as a settlement and trading bridge within crypto markets, letting participants move value without converting back to a bank account each time. They are also explored for payments and transfers.
Because their value is meant to be predictable, they serve as a unit of account and a parking place between trades, which is why they account for a large share of crypto transaction volume.
What Are the Risks?
A stablecoin is only as stable as the assets and mechanism behind it. If reserves are insufficient, opaque, or hard to redeem, a coin can “break the peg” and trade below its target value.
Algorithmic designs have proven especially fragile, and stablecoins remain subject to evolving regulation across jurisdictions.
Related Terms: Base and Quote Currency, Spot Rate, Convertibility, Benchmark. See the full glossary for more.
This is educational content, not financial or trading advice.