Stablecoins are cryptocurrencies pegged to a stable value — usually $1 USD. They're the most used asset in DeFi, the primary trading pair on most exchanges, and the bridge between volatile crypto and predictable value.
The Main Types
Fiat-Backed (Centralized)
USDC (Circle) — The most trusted stablecoin in DeFi. Backed by cash and short-term US Treasuries, monthly attestations from Grant Thornton. US-regulated. When SVB failed in 2023, USDC briefly depegged but recovered within days once reserves were clarified.
USDT (Tether) — Highest market cap stablecoin globally. Historically opaque about reserves but has maintained its peg through multiple market crises. More counterparty risk than USDC for institutional use.
PYUSD (PayPal) — Issued by PayPal, backed by US Treasuries and deposits. Growing but smaller market cap.
Risks: Regulatory action against issuer, reserve misrepresentation, wallet blacklisting (both USDC and USDT can freeze addresses).
Crypto-Backed (Decentralized)
DAI / USDS (MakerDAO/Sky) — Backed by overcollateralized crypto (ETH, USDC, BTC). If collateral drops, the system auto-liquidates to maintain the peg. More decentralized but complex and slightly less capital-efficient.
crvUSD (Curve) — Uses soft-liquidation via LLAMMA — gradual rebalancing instead of hard liquidations.
Algorithmic (Mostly Failed)
UST (Terra/Luna) — $18 billion evaporated in May 2022 when the peg mechanism broke. Wiped out in 3 days.
In 2026, remaining algorithmic stablecoins have moved toward more collateral backing after the UST lesson. Rule of thumb: be very cautious of any stablecoin offering >5% yield with no clear collateral backing.
Which Stablecoin for What
| Use case | Best option | |---|---| | DeFi on Solana | USDC | | DeFi on Ethereum/Base | USDC or DAI | | Offshore exchange trading | USDT (most pairs) | | Maximum decentralization | DAI/USDS |
Stablecoin Yield in 2026
Earning yield on stablecoins is one of the more accessible DeFi strategies — lower volatility, lower IL risk.
Common sources:
- Lending protocols (Aave, Compound, Morpho) — Supply USDC, earn from borrowers
- DEX LP (USDC/USDT pools) — Earn trading fees, near-zero IL
- RWA yield (Ondo, Superstate) — Tokenized US Treasuries, 4–6% real yield
- Protocol staking — Often inflated rates paid in native tokens (emission yield, not real yield)
Real yield = backed by actual protocol revenue or real-world assets. Emission yield = comes from minting new tokens. Unsustainable long-term.