Deposit
Products
Analysis
Deposits are the lifeblood of banking — providing the low-cost funding that enables lending, generating fee income, and anchoring the customer relationship that drives lifetime value.
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The Deposit Franchise
A strong deposit franchise is the single most durable competitive advantage in banking — providing stable, low-cost funding that underpins NIM and insulates banks from wholesale market volatility.
Deposits fund approximately 70–80% of total bank assets at most retail-oriented institutions. Unlike wholesale funding, retail deposits are sticky, diversified, and repriced slowly — creating a structural NIM advantage over funding-dependent competitors.
The composition of the deposit base matters enormously. CASA (Current Account / Savings Account) deposits carry near-zero interest cost and represent the highest-quality funding, while term deposits reprice at market rates and offer less insulation in rising rate environments.
Banks with high CASA ratios trade at a significant premium to book — the deposit franchise is valued as a durable economic moat that cannot be replicated quickly by competitors or capital market funding.
Product Types
Each deposit product occupies a distinct position on the cost, stability, and customer relationship spectrum.
Funding Cost Dynamics
How a bank prices and manages its deposit book directly determines its cost of funds — and ultimately its NIM and profitability.
Deposit beta — the proportion of a rate move that a bank passes through to depositors — is the key metric in rising rate cycles. Banks with low deposit betas expand NIM while competitors are forced to reprice faster to retain customers.
In the 2022–2024 rate cycle, US bank deposit betas averaged 40–45% — meaning for every 100bps of Fed hikes, banks raised deposit rates by just 40–45bps, capturing the majority of the rate uplift in NIM expansion.
- → CASA ratio — Higher CASA = lower blended cost of funds. Best-in-class retail banks maintain CASA ratios above 60%.
- → Deposit beta — Low beta banks retain more NIM uplift in rising cycles — a key differentiator in rate analysis.
- → Maturity profile — Longer-duration deposit books reprice more slowly — providing NIM stability in volatile rate environments.
- → Customer stickiness — Primary banking relationships (salary accounts) show the lowest attrition and highest resistance to rate competition.
Deposit Cost by Product — US 2025
| Product | Avg Rate | Beta |
|---|---|---|
| Current Account | 0.05% | ~5% |
| Savings Account | 0.45% | ~25% |
| Money Market | 4.20% | ~80% |
| 1-Year CD | 4.75% | ~95% |
| Blended CoF | 1.82% | ~42% |
Deposit Benchmarks
Key deposit quality metrics used to differentiate strong from average franchise value.
Deposit Quality Matrix
2025–2026| Metric | Strong | Average | Weak |
|---|---|---|---|
| CASA Ratio | > 60% | 40–60% | < 40% |
| Deposit Beta | < 30% | 30–50% | > 50% |
| LDR | 70–85% | 85–95% | > 100% |
| Cost of Deposits | < 1.0% | 1.0–2.5% | > 2.5% |
| Deposit Growth | > 8% YoY | 3–8% | < 3% |
Deposit Outlook 2026
Rate cuts will compress deposit margins — but franchise quality and CASA mix will determine who absorbs the impact most gracefully.
- → CASA migration — Rate cuts reduce the opportunity cost of holding current accounts — CASA ratios should recover from 2022–2024 lows.
- → Beta normalisation — As rates fall, deposit betas work in reverse — banks with stickier deposit bases will reprice downward more slowly, protecting NIM.
- → Digital competition — Fintechs offering 4–5% savings rates attracted $200B+ in deposits during the high-rate cycle. Loyalty will be tested as rates normalise.
- → Deposit insurance — Post-SVB regulatory pressure to expand FDIC coverage is reshaping how large depositors manage concentration risk.
- → CBDC risk — Central bank digital currencies represent a long-term structural threat to deposit bases if implemented at retail scale.
Banks entering the rate-cut cycle with high CASA ratios and primary relationship depth will outperform on NIM. The deposit franchise — not the loan book — is the primary driver of through-cycle profitability.