Why Stablecoins Can Be More Profitable When Interest Rates Are High

Stablecoins such as USDT and USDC are designed to stay close to $1 regardless of whether interest rates are low or high.

For the companies issuing them, however, interest rates can dramatically change how profitable the business becomes.

When a customer exchanges $1 for a stablecoin, the issuer receives an asset that must back the token. Major issuers do not simply leave that money sitting idle. Large portions of reserves are typically held in short-term U.S. Treasury securities, overnight repurchase agreements, money-market instruments and bank deposits.

Those assets generate interest, while stablecoin holders generally continue to own a token worth about $1.

Circle’s reserve disclosures show that USDC reserves include short-dated Treasury securities, overnight Treasury repos and cash held at regulated financial institutions.

Higher Rates Can Turn Reserves Into a Huge Revenue Engine

The basic economics are simple.

If a stablecoin company has $100 billion of reserves earning 1%, those assets could generate roughly $1 billion in annual interest before expenses.

At a 5% yield, the same reserve base could produce about $5 billion.

Reserve portfolio 1% yield 3% yield 5% yield $10B $100M $300M $500M $50B $500M $1.5B $2.5B $100B $1B $3B $5B

Nothing about the stablecoin itself needs to change. The issuer simply earns more on the assets backing the same amount of tokens.

That is why Treasury yields have become increasingly important to the economics behind stablecoin reserves.

Circle Shows How Sensitive Revenue Is to Rates

Circle provides a clear example because it publicly reports reserve income tied to USDC.

The company generated $668 million in reserve income in Q2 2026, up from the previous year as USDC circulation expanded. At the same time, Circle said the average return earned on reserves fell by 66 basis points, partially offsetting the benefit of higher stablecoin balances.

This highlights the two main forces behind the business model.

More stablecoins in circulation means more reserve assets earning interest. Lower interest rates mean each dollar of those reserves generates less income.

So even if USDC supply keeps growing, a falling rate environment can reduce profitability per reserve dollar.

Tether Shows the Model at Even Greater Scale

Tether operates the same basic model with a much larger reserve base.

At the end of Q2 2026, the company reported approximately $187.8 billion in assets and around $1.5 billion in quarterly net operating profit.

A substantial share of Tether’s reserves is held in U.S. Treasury securities and repos. Earlier in 2026, the company reported roughly $141 billion in direct and indirect Treasury exposure.

At that scale, relatively small changes in short-term interest rates can have a large impact on earnings.

A one-percentage-point change in yield on $100 billion of interest-bearing assets represents roughly $1 billion in annualized income before expenses.

Why Fed Rate Cuts Can Hurt Stablecoin Issuers

The same mechanism works in reverse.

Short-term Treasury securities mature frequently and are replaced with new securities priced at current market yields. If the Federal Reserve cuts interest rates, issuers gradually reinvest their reserves at lower rates.

That means reserve income can decline even if stablecoin circulation remains unchanged.

Issuers can compensate through higher token supply, payment services, custody products or other businesses, but the relationship remains straightforward.

Higher interest rates make every dollar of reserves more productive. Lower rates reduce the amount issuers can earn from the same balance sheet.

That is why high interest rates can be uncomfortable for borrowers and investors while simultaneously creating one of the most favorable environments for stablecoin issuers.