Introduction
In a business where the product (money) is a commodity, the single greatest competitive differentiator is the cost of raw material. For banks, that raw material is deposits. A bank that funds its loans with 0.5% checking and savings deposits has a structural advantage over one funding with 4.5% brokered CDs, because every basis point of funding cost difference flows directly to the bottom line through net interest income. This is why the deposit franchise is often described as the most valuable asset a bank possesses, even though deposits are technically liabilities on the balance sheet.
For FIG bankers, deposit analysis is central to bank valuation, M&A due diligence, and strategic advisory. In Bank Director's 2024 survey, 85% of bank executives and directors identified an attractive deposit base as the top attribute they seek in an acquisition target. Understanding what makes a deposit franchise valuable, how to measure deposit quality, and how deposits translate to M&A premiums is fundamental FIG knowledge.
Core Deposits vs. Brokered Deposits
Not all deposits are created equal. The critical distinction is between core deposits and non-core (brokered/wholesale) deposits.
Core deposits are funds placed by customers who maintain an established relationship with the bank: checking accounts, savings accounts, money market accounts, and small-denomination CDs (typically under $250,000). Core depositors typically choose their bank based on convenience, service quality, and relationship depth, not solely on interest rate. This means core deposits are "sticky": depositors are unlikely to move their money in response to small rate differentials because the switching costs (changing direct deposits, bill payments, account linkages) are high.
Brokered deposits are funds placed through third-party intermediaries (deposit brokers) who match depositors with banks offering the highest rates. Brokered depositors have no relationship with the bank and will move their money the moment a better rate appears elsewhere. The FDIC views brokered deposits as more volatile than core deposits, and regulatory scrutiny of brokered deposit reliance has increased following bank failures where brokered deposits fled rapidly during stress.
- Core Deposits
Deposits placed by customers who have an established relationship with the bank, including demand deposits (checking accounts), savings accounts, money market deposit accounts, and small-denomination time deposits. Core deposits are characterized by low cost (significantly below wholesale market rates), high stability ("stickiness"), and behavioral predictability. They are considered the most valuable funding source because depositors maintain their accounts based on convenience and relationship rather than rate shopping. In bank M&A, core deposits are the primary determinant of the deposit premium and the core deposit intangible (CDI) recorded as an asset on the acquirer's balance sheet. CDI values averaged 2.74% of acquired deposits through mid-September 2024, reflecting the increased value of cheap, stable funding in a higher-rate environment.
The most valuable deposits are noninterest-bearing (NIB) demand deposits: checking accounts that pay zero interest. NIB deposits represent "free" funding for the bank. During the low-rate era (2010-2021), NIB deposits grew as a share of total deposits (since the opportunity cost of holding non-interest-bearing cash was minimal). As rates rose in 2022-2024, this trend reversed as customers moved cash into interest-bearing accounts and money market funds to capture higher yields.
| Deposit Type | Typical Cost | Stickiness | Value to Bank | Regulatory View |
|---|---|---|---|---|
| Noninterest-bearing checking | 0% | Very high | Highest | Preferred |
| Interest-bearing checking | 0.1-1.0% | High | Very high | Core |
| Savings / money market | 1.0-4.0% | Moderate-high | High | Core |
| Small CDs (under $250K) | 3.0-5.0% | Moderate | Moderate | Core |
| Brokered deposits | 4.0-5.5% | Very low | Low | Non-core (scrutinized) |
| Wholesale borrowings (FHLB) | 4.5-5.5% | None (maturity-driven) | Lowest | Non-core |
Deposit Beta: Measuring Rate Sensitivity
Deposit beta measures how much of a change in market interest rates a bank passes through to its deposit customers. If the Fed raises rates by 100 basis points and a bank raises its deposit rates by 40 basis points, the deposit beta is 40%.
Deposit betas are not static. They tend to increase over time during a rate hiking cycle as depositor awareness grows and competition for deposits intensifies. During the 2022-2023 hiking cycle, cumulative deposit betas for the industry reached approximately 45-55% by the end of the cycle, though they varied significantly by institution: banks with strong core deposit franchises (like US Bancorp or JPMorgan's consumer bank) maintained lower betas than banks relying on rate-sensitive funding.
The Deposit Franchise in M&A
Deposit franchise quality is the single most important variable in bank M&A pricing. Acquirers are fundamentally buying access to the target's deposit base, because deposits are the cheapest and most stable funding source available.
The value of the deposit franchise is expressed through the deposit premium: the portion of the acquisition price attributable to the deposit relationships, calculated as the premium paid over tangible book value divided by core deposits acquired. Deposit premiums in branch transactions have ranged from 4-8% in recent transactions, meaning the acquirer pays $4-8 for every $100 of core deposits acquired.
Under purchase accounting, the value assigned to the deposit relationships is recorded as a core deposit intangible (CDI) on the acquirer's balance sheet, which is amortized (typically over 7-10 years) as a non-cash expense. CDI values averaged 2.74% of acquired core deposits through mid-2024, reflecting the enhanced value of low-cost funding in a higher-rate environment.
Deposit economics differ meaningfully in Europe. European deposit insurance covers only EUR 100,000 per depositor (roughly half the US FDIC limit of $250,000), which creates higher concentrations of uninsured deposits at equivalent balance levels. During the ECB's negative rate era (2014-2022), some European banks charged corporate clients for holding deposits, a phenomenon with no US precedent. The subsequent rate hiking cycle in 2022-2024 produced faster deposit repricing in Europe than in the US, partly because European savers had more immediate access to higher-yielding alternatives through money market funds and term deposits. For cross-border FIG analysis, deposit franchise comparability requires adjusting for these structural differences in deposit insurance, pricing behavior, and competitive dynamics.
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