Tether's business model is straightforward: it collects dollars from customers who mint USDT, then invests most of those reserves in short-term U.S. Treasury bills and other low-risk instruments. The yield on those holdings is Tether's revenue.
When someone sends dollars to Tether to create new USDT, those dollars don't sit idle. Tether deploys them into Treasury bills, which currently yield around 4–5 percent annually. With roughly $110 billion in reserves backing USDT (according to market data), and the bulk allocated to short-term debt instruments, the math is basic: a 5 percent yield on $80–90 billion in Treasury holdings generates north of $4 billion annually in gross interest income before costs.
Tether keeps that spread. It pays nothing to USDT holders—the token generates no yield for users—so the entire interest earned on reserves flows to Tether as profit. The company also charges small fees for minting and redemption, though the Treasury income dominates the P&L.
This model works because Tether sits at the center of a $110 billion flow of customer deposits. Every time a user converts fiat to USDT, Tether gains temporary control of those dollars for as long as the token stays in circulation. That float is valuable. Tether can invest it aggressively or conservatively. Currently, U.S. Treasuries offer the safety Tether needs to back a stablecoin while still generating material returns.
The arrangement has drawn regulatory scrutiny precisely because it concentrates power and profit in one issuer's hands. New York's financial regulator has monitored Tether's reserves closely for years. Some lawmakers have proposed rules requiring stablecoin issuers to hold 100 percent cash or near-cash equivalents, which would force Tether to hold unproductive reserves or shrink its profit margin. Those proposals have stalled, leaving Tether to operate under current scrutiny.
Tether's parent company, Ifinex, is private and does not disclose detailed financials. Tether itself publishes reserve attestations quarterly but doesn't break out revenue by line item or confirm how much of its interest income is reinvested versus paid out to shareholders. That opacity feeds persistent questions about who actually benefits from the profits and whether Tether's incentives align with stability.
The structure also creates a subtle conflict. The more USDT circulates, the more reserves Tether holds, and the larger its interest income. That gives Tether a financial reason to expand the stablecoin's use—a dynamic that regulators watch carefully when assessing systemic risk.