How Do Stablecoin Issuers Like Tether and Circle Actually Make Money?

[johnblockbuster]

Q: What is the primary revenue model for stablecoin issuers?
The core business model of a stablecoin issuer is remarkably simple and extraordinarily profitable when interest rates are high. When a user deposits one US dollar to receive one USDT or one USDC, the issuer takes that dollar and invests it in short-term, low-risk instruments like US Treasury bills, money market funds, and government securities. The user receives a stablecoin worth exactly one dollar that they can use for transactions, trading, or yield-generating DeFi activity. The issuer keeps all the interest generated by the reserve assets. Since stablecoins pay no interest to holders by default, the entire yield on the reserve portfolio flows directly to the issuer's bottom line. With Tether holding approximately $189 billion in circulating USDT and short-term Treasury yields running at around 4% to 5%, the interest income alone generates billions of dollars annually on assets that cost essentially nothing to hold beyond the technology and compliance infrastructure.Q: How much money do stablecoin issuers actually make?
Tether reported profits of approximately $13 billion in 2024, making it one of the most profitable financial companies in the world on a per-employee basis. The profit margin is structurally exceptional because the liability side of the balance sheet, circulating USDT, pays zero interest to holders while the asset side, Treasury bills and similar instruments, generates market-rate returns. Circle, the issuer of USDC, generates revenue through the same reserve yield mechanism and also charges fees for certain institutional services and API access. The profitability of both companies is highly sensitive to interest rate environments: when rates are near zero as they were in 2020 and 2021, the reserve yield business generates minimal income, but when rates rise significantly as they did from 2022 onward, the same reserve portfolio generates dramatically more revenue without any corresponding increase in obligations to stablecoin holders.Q: Do stablecoin issuers make money from anything beyond reserve yield?
Yes, though reserve yield is by far the dominant revenue source at current scale. Both Tether and Circle charge fees for certain transactions and services, particularly for large institutional clients using their products for cross-border settlement or treasury management. Circle generates additional revenue from its Circle Payments Network and enterprise API products. Some issuers charge redemption fees for converting large amounts of stablecoin back to fiat. Newer stablecoin models like Ethena's USDe take a different approach entirely, generating yield through basis trading strategies involving staked Ethereum and futures positions rather than holding traditional reserve assets, and sharing a portion of that yield with token holders rather than retaining it all.

[madmax]

Circle charging fees for API access and enterprise services on top of reserve yield is Circle quietly building the business that needs to exist when interest rates go back to zero, Tether has not announced a similar plan which is either confidence or complacency and the next rate cycle will tell you which.