🎙️ Ep 18: Can Stablecoins Keep Deposits in Banks? W/ Cooper Thompson (Fiserv)

Why It Matters

Stablecoin architecture directly influences banks’ funding models, affecting liquidity, lending capacity, and competitive dynamics across the financial ecosystem. Understanding this liability shift is crucial for banks, fintechs, and regulators navigating digital money adoption.

Key Takeaways

• Stablecoins dictate reserve placement, affecting bank liability structures
• Community banks need deposit-backed collateral, not centralized Treasury pools
• FIUSD proposes distributed demand deposits via StoneCastle network
• Near-term stablecoins add value for cross‑border, programmable flows
• Tokenized deposits could enable yield‑bearing digital assets on balance sheets

Pulse Analysis

Stablecoins have traditionally been framed as a payments innovation, but their true impact lies in how they allocate cash reserves on a bank’s balance sheet. When a stablecoin’s backing assets are parked in Treasury securities or with global systemically important banks, community banks lose a critical source of funding. This liability‑centric view forces banks to consider not just whether to support a token, but where the underlying deposits will sit and how they will be remunerated. A re‑engineered fiat‑layer that preserves deposit economics can bridge the gap between blockchain connectivity and traditional banking infrastructure.

FIUSD’s model, presented by Cooper Thompson, illustrates a practical path forward. By leveraging a distributed network—StoneCastle—to hold demand deposits across multiple institutions, the stablecoin’s collateral remains on the books of participating banks rather than being pooled in a single, large‑scale Treasury pool. This design keeps the funding source local, enabling community banks and credit unions to retain liquidity for loan origination while still offering programmable money benefits. In the short term, such an architecture shines in cross‑border transactions, multi‑party settlements, and escrow‑type arrangements where speed and conditional logic outweigh the need for domestic rail replacement.

Looking ahead, tokenized deposits could evolve into a new asset class, allowing banks to issue yield‑bearing digital instruments, tokenized certificates of deposit, or tradable duration products without off‑boarding liabilities. However, regulatory clarity around deposit classification, brokered status, and stress‑testing will be decisive. Fintech firms and infrastructure providers that build orchestration layers—linking legacy cores to blockchain networks while ensuring compliance—stand to capture market share. For incumbents, the pressure will be to innovate their collateral frameworks to stay competitive as programmable money reshapes both payment flows and balance‑sheet strategies.