What Are Stablecoins?
Stablecoins are cryptocurrencies designed to maintain a stable value, typically pegged 1:1 to a fiat currency like the US dollar. Unlike Bitcoin or Ethereum, whose prices can swing 10% in a day, stablecoins aim to stay at exactly $1.00. They serve as the primary medium of exchange within crypto — the digital equivalent of cash in a volatile market.
For a detailed breakdown of how stablecoins work, their mechanics, and historical context, see our comprehensive Stablecoins guide. This page provides a category overview.
Types of Stablecoins
Not all stablecoins work the same way. The mechanism behind the peg matters enormously:
- Fiat-backed: Tokens like USDT (Tether) and USDC (Circle) are backed by reserves of cash, treasuries, and equivalents held in bank accounts. The most common type, handling trillions in daily volume.
- Crypto-collateralized: Tokens like DAI are backed by overcollateralized crypto deposits. More decentralized, but subject to liquidation risk during market crashes.
- Algorithmic: Stablecoins that use code and incentive mechanisms to maintain the peg without direct collateral. The collapse of TerraUSD (UST) in 2022, which wiped out $40 billion, demonstrated the dangers of this model.
Regulation: MiCA and the New Landscape
Stablecoins are at the center of crypto regulation worldwide. In the European Union, the Markets in Crypto-Assets (MiCA) regulation establishes clear rules for stablecoin issuers, including reserve requirements, transparency standards, and licensing obligations. This has already led to changes — some stablecoins have been delisted from EU exchanges that couldn't meet compliance requirements.
In the US, stablecoin legislation is actively being developed, with debates around whether issuers should be regulated like banks. These regulatory shifts will reshape which stablecoins dominate in different jurisdictions.
Risks and When to Use Stablecoins
Stablecoins are essential tools for trading, DeFi participation, and cross-border payments. But "stable" doesn't mean "risk-free." Key risks include:
- Reserve transparency: Do you trust the issuer's reserves? USDC publishes monthly attestations; USDT has faced persistent questions about its backing.
- Depeg events: Even major stablecoins have temporarily lost their peg during market stress (USDC briefly dropped to $0.87 during the SVB crisis in 2023).
- Counterparty risk: Fiat-backed stablecoins require trusting a centralized issuer. If that entity fails or is sanctioned, your tokens could become worthless.
Compare stablecoins carefully — USDT vs USDC vs DAI each carry different risk profiles. Diversifying across multiple stablecoins can reduce your exposure to any single point of failure.
