Federal Reserve rate increases boost stablecoins while hurting Bitcoin borrowers

A single Federal Reserve rate move can lift the stablecoin business while squeezing companies that borrowed to buy Bitcoin, according to analysis reported by CryptoSlate. The split shows why crypto’s exposure to interest rates cannot be reduced to one verdict on whether money is getting easier or harder for the industry.

• The Federal Reserve raised its target rate by a quarter point to 3.75%-4% on September 16, 2024
• Circle’s reserve income supplied 95.2% of revenue in the three months ended June 30, 2026
• A hypothetical $10 billion issuer would need $13.33 billion in reserves to offset a drop from 4% to 3%

• 3.75%-4% new Fed target range after the September 16 quarter-point hike
• 95.2% share of Circle’s Q2 2026 revenue from reserve income
• $13.33B reserves needed if a $10B issuer’s return fell from 4% to 3%
• $2M added annual interest on $100M of debt from a two-point rate rise

When investors treat Treasury yields as a single verdict on whether money is getting easier or harder for crypto, they miss that different rates reach different businesses through different contracts, according to analysis reported by CryptoSlate. A stablecoin issuer earning interest on reserves and a company borrowing to buy Bitcoin sit on opposite sides of the same rate move, even though both are crypto-native businesses. The Fed’s September 16, 2024 decision to lift its target range by a quarter point, to 3.75%-4%, illustrates the divide: higher overnight rates can boost returns on short-term stablecoin reserves even as they raise interest bills for borrowers whose debt tracks those same rates.

Circle’s reserve income made up 95.2% of its second-quarter revenue

Circle’s dependence on reserve income shows up directly in its own numbers. The stablecoin issuer’s second-quarter filing reports that reserve income supplied 95.2% of revenue in the three months ended June 30, 2026.

That concentration means Circle’s results track closely with the secured overnight financing rate rather than longer-dated Treasury yields, since its reserves largely sit in short-term instruments that reset quickly. The distinction matters because overnight rates and the 10-year Treasury yield can move in opposite directions, as the New York Fed’s term-premium research shows by separating expected future short rates from the extra compensation investors demand for holding longer debt.

A hypothetical issuer with $10 billion in reserves earning 4% annually would generate $400 million before expenses. If that return fell to 3%, income would drop to $300 million, and recovering the original figure would require roughly $13.33 billion in reserves, about a third more than before. The math shows why an issuer can add customers and still earn less per dollar held, since token holders typically have no contractual claim on that reserve income.

A two-point rate increase would add $2 million to a $100 million loan

Borrowers face the mirror image of that calculation. A hypothetical company raising $100 million in fresh interest-bearing debt would pay an additional $2 million a year if its borrowing rate rose by two percentage points, money it must find through earnings, further financing or asset sales.

The impact on a Bitcoin-buying borrower depends on what kind of debt it carries. Existing fixed-rate borrowing does not reprice automatically when Treasury yields move, while floating-rate loans reset sooner, and refinancing brings a borrower back to a market where lenders set new terms.

Convertible debt complicates the picture further, since lenders may accept a lower coupon in exchange for the option to convert into equity, a trade-off that can mask the true cost of financing and the dilution shareholders eventually bear. Bitcoin miners weighing data-center construction face a related timing problem, because spending begins before a completed site earns revenue, so a larger interest bill can consume a narrow expected surplus before the first customer pays. The SEC’s guide to interest-rate risk notes that long-term bonds can lose market value as yields rise, a factor that also shapes how Bitcoin holders weigh price appreciation against income available elsewhere.

Aave’s utilization-based yields keep the Treasury comparison unresolved

Onchain lending adds a third layer that doesn’t map cleanly onto either side. Aave’s documentation on supplying tokens explains that returns to suppliers depend on borrowing utilization and protocol parameters rather than on Treasury yields directly, so a pool’s advertised rate can rise or fall purely on demand for borrowed stablecoins.

A short-term government investment offering 4% and an onchain position advertising 7% are not directly comparable. The extra three percentage points has to be weighed against contractual, liquidity, technical and counterparty risks that a Treasury bill doesn’t carry.

The open question for allocators is which side of a given crypto balance sheet, issuer, borrower or DeFi depositor, actually benefits when the next Fed move comes. That depends on contract terms that don’t show up in a single interest-rate headline.

The BlockWest read. Treasury and corporate allocators building exposure to crypto through stablecoin issuers or Bitcoin-linked debt need separate rate assumptions for each position, not one Fed-driven thesis. Circle’s 95.2% reliance on reserve income makes its earnings effectively a short-duration rate bet, while any miner or borrower carrying floating-rate debt is running the opposite trade. Treating both as a single crypto rates exposure in a portfolio model will misprice one side every time.

The question for Circle’s next quarterly filing, and for every Bitcoin-linked borrower carrying floating-rate debt, is whether short-term rates keep falling from the Fed’s new 3.75%-4% range, a move that would narrow reserve income for issuers even as it eases borrowing costs for leveraged Bitcoin holders.

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