The integrity of the USDT-USD peg depends entirely on the quality and liquidity of Tether's reserves. Over the years, Tether has substantially improved the composition of its reserves, shifting away from commercial paper and riskier assets toward US government securities. Here is a detailed breakdown of what currently backs every USDT in circulation.
US Treasury Bills – The Core Reserve Asset
As of 2024, US Treasury bills represent the dominant component of Tether's reserve portfolio, accounting for more than 80% of total holdings. Tether has reported holding over $97.6 billion in US Treasuries, making it one of the largest holders of short-term US government debt globally — larger than many national central banks.
Treasury bills are considered the safest and most liquid short-term instruments in the world, backed by the full faith and credit of the US government. Their use as the primary reserve asset significantly strengthens the credibility of the USDT peg.
Repurchase Agreements (Repos)
Repurchase agreements backed by US Treasury securities form the second-largest component of Tether's reserves. These instruments allow Tether to maintain short-term liquidity while earning a yield on its reserve assets. Repos backed by US Treasuries carry very low credit risk and can be unwound quickly to meet redemption demands.
Money Market Funds
Tether holds a portion of its reserves in money market funds, which invest in short-term, high-quality instruments including Treasury bills, government agency securities, and overnight repurchase agreements. These funds provide daily liquidity and a stable net asset value.
Cash and Bank Deposits
A small portion of reserves is held as cash or cash equivalents in bank deposits. As of September 2024, this represented approximately 0.5% of total reserves, reflecting a deliberate move away from direct cash deposits (which carry bank counterparty risk) toward higher-quality instruments.
Other Assets
Tether's reserve portfolio also includes a small allocation to:
- Corporate bonds – investment-grade short-duration instruments
- Secured loans – collateralized lending positions
- Other investments – including minority stakes in Bitcoin mining and technology businesses
These other assets represent a small fraction of total reserves and are offset by Tether's reported excess reserves of over $5 billion, which provide an additional buffer above the 1:1 backing requirement.
Excess Reserves and Profitability
As of August 2024, Tether reported $118.4 billion in total reserves against a circulating USDT supply of approximately $114 billion, resulting in excess reserves of $5.3 billion. In 2024, Tether reported record annual profits of $13 billion, driven primarily by interest income on its US Treasury holdings. These excess reserves further support the stability of the USDT peg and provide a significant cushion against any sudden redemption demands.
Tether's shift to US Treasury bills as its primary reserve asset has dramatically reduced doubt over the token's ability to maintain its peg through volatile market conditions.