The Tether peg works through a dual mechanism: direct redemption and open-market arbitrage. At its core, Tether Limited guarantees that any verified user can deposit $1 USD and receive exactly 1 USDT, or conversely, return 1 USDT and receive $1 USD. This direct convertibility is the foundation of the peg. However, since retail users cannot always access Tether directly, the open market fills the gap through arbitrage traders who exploit any price deviation above or below $1. When USDT trades above $1 on Binance, Coinbase, or other exchanges, institutional arbitrageurs immediately mint new USDT from Tether's portal and sell them on the exchange, driving the price back to $1. The reverse happens when USDT dips below $1. This self-correcting mechanism has maintained USDT within a fraction of a cent from $1 for most of its history since 2014.
The Arbitrage Engine
PEG STABILITY
Professional arbitrageurs monitor USDT price feeds across all major exchanges 24/7. Any deviation of even 0.1% from the $1 peg creates a profitable arbitrage opportunity. Because Tether supports redemptions on multiple blockchains — including Ethereum (ERC-20), Tron (TRC-20), Solana, Avalanche, and more — arbitrage capital flows rapidly between venues. The speed and depth of this arbitrage market is why USDT has never sustained a significant depeg for more than a few hours, even during extreme market stress events like the May 2022 crypto crash when USDT briefly touched $0.95 on some smaller exchanges before recovering within hours.
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