How Stablecoins Are Challenging the Core Funding Model of Modern Banking

TLDR:

• Stablecoins issuers rank 19th among U.S. Treasury holders, rivaling assets that back traditional savings accounts. 
• The GENIUS Act bars yield distribution to stablecoin holders, protecting the fractional reserve banking model.
• New FDIC and OCC rules give insured banks a formal path to issue payment stablecoins by July 2026.
• Tether and Circle control over 84% of stablecoin market cap, concentrating settlement risk at the issuer level.

Stablecoins are reshaping the financial landscape in ways few anticipated. Stablecoin issuers now rank as the 19th largest holders of U.S. Treasuries.

This positions them alongside the same assets backing traditional savings accounts. The central legislative debate focuses on whether issuers can pass yield to holders.

As crypto companies race toward bank charters, the collision between digital assets and conventional banking is no longer theoretical. It is already happening.

The Yield Gap and the Threat to Deposit Funding

U.S. Treasuries have been yielding between 3.5% and 4%, while average savings accounts return just 0.39%. Stablecoin issuers hold the same underlying assets, yet regulation prevents them from sharing that yield.

The GENIUS Act explicitly bars direct yield distribution, and regulators are closing emerging workarounds as well.

As Delphi Digital noted, access to money that is liquid, free of credit risk, and interest-bearing weakens the incentive to hold cash in a traditional bank.

This creates a structural funding problem that runs deeper than political framing suggests. Critics label it a national security concern, but the practical threat targets the fractional reserve model directly.

Banks fund loans using deposits. If dollars migrate into fully reserved stablecoins holding only Treasuries, private credit creation tightens considerably. Funding shifts toward sovereign assets, and consumer and SME credit channels begin to weaken over time.

Smaller banks and credit unions face the greatest exposure here. They rely disproportionately on deposits to fund their loan books.

If those balances move on-chain, both lending margin and capacity shrink simultaneously. End users could gain cheaper, faster dollars, but the deposit base supporting broader lending would gradually erode.

The Race for Bank Charters and Vertical Integration

Over recent months, fintechs and crypto companies have moved aggressively toward acquiring federal bank charters.

After the 2008 financial crisis, new bank formation dropped from roughly 132 per year to just six annually. When charters dried up, companies built around banks rather than becoming them.

That dynamic has now reversed. In December 2025, the FDIC approved a rule allowing supervised state banks to issue payment stablecoins through subsidiaries.

The OCC followed with proposed rulemaking in February 2026 for nationally chartered banks, targeting July 2026 for finalization.

For crypto-native firms, a federal charter means direct access to FedNow and Fedwire. For traditional fintechs, it means eliminating third-party dependencies and owning the complete payments stack.

Stripe exemplifies this approach, having acquired Bridge, Privy, and Metronome while co-building Tempo with Paradigm.

Tether and Circle still hold over 84% of total stablecoin market cap. White-label issuance is expanding through Paxos, Agora, Brale, M0, and Bridge, yet liquidity at scale remains self-reinforcing.

Whether the CLARITY Act passes will ultimately determine if platforms can offer any form of stablecoin yield going forward.

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