Instant Payments Deposit Risk: What Senior Leaders Should Reassess

Instant payments deposit risk is easy to frame too dramatically. The useful starting point is what has not changed. Instant payments do not rewrite the basic math of a bank balance sheet. If a customer moves money to another institution, the bank still has to fund the outflow through available cash, reserve or settlement balances, or another source of liquidity. The balance sheet still balances.

What can change faster is the funding profile supporting the assets on the other side. FedNow and RTP operate around the clock, and customers can increasingly move money outside traditional banking hours when their financial institution has enabled the capability. A commercial customer may be concentrating cash, funding payroll, paying a supplier, rebalancing investments, or moving excess balances to earn a better return. None of those actions requires concern about the safety of the bank. They simply change how quickly balances can move.

Why Instant Payments Create Deposit Risk for Senior Leaders

The ALM issue is timing. Commercial loans do not suddenly shorten because a large operating balance leaves on Saturday. Securities do not immediately reprice because a customer moved cash elsewhere. If the institution needs to replace that funding, the replacement may also carry a different cost. Deposit behavior and the funding mix can therefore change faster than longer-duration assets can reprice or mature.

The 2023 banking stress made the speed issue very visible. Silicon Valley Bank lost about $42 billion in deposits in a single business day. The Federal Reserve later identified digital banking and social media as accelerants, while making clear that the underlying vulnerabilities were concentrated funding and serious weaknesses in interest-rate and liquidity risk management. The lesson for most institutions is not that a digital bank run is imminent. It is that assumptions about how quickly customers can act deserve another look.

The same point now applies to ordinary commercial activity. The Clearing House has highlighted corporate RTP use cases including cash concentration and liquidity management, portfolio rebalancing and investment funding, large supplier payments, and time-sensitive treasury transfers. Those use cases are valuable because they give businesses greater control over their cash. They also make it important for financial institutions to understand whether historic assumptions about deposit stability, concentration, and available liquidity still reflect actual customer behavior.

This is not solved by asking ALCO to meet on a weekend. ALCO’s role is governance: establishing the institution’s approach to liquidity, funding, interest-rate risk, deposit concentration, and balance-sheet structure, then setting the policies and limits within which treasury and other operating teams manage day to day.

The more useful questions for senior leaders are whether those assumptions still hold between meetings.

• Which parts of the deposit base are considered stable, and is that conclusion supported by observed behavior?

• Can treasury see meaningful changes in liquidity and funding concentration outside traditional business hours, with clear authority to act as established limits are approached?

• And when a new instant payment use case is introduced, does the balance-sheet conversation happen early enough to understand how customer behavior may change?

The practical shift is to stop treating payment strategy and balance-sheet strategy as separate conversations. A new instant payment capability should be evaluated for customer value and revenue, but also for its potential effect on deposit behavior, liquidity needs, funding concentrations, and replacement-funding costs.

Your ALCO can still meet on Tuesday. The assumptions it approves on Tuesday simply need to remain useful on Saturday night.

The Instant Edge explores these modernization decisions for senior leaders who need to connect payments, liquidity, risk, and governance without turning every new capability into a separate transformation program. Read the full issue, 24/7 Payments Are Testing Your Balance Sheet Assumptions, for the leadership framing behind this shift.