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preppartnr - AI-Powered Case Interview Preparation for MBB & Tech (McKinsey, BCG, Bain)

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Banking & Financial Services Foundations

Category: Industries • Duration: 12 min • Difficulty: Intermediate

What You'll Learn

Deconstruct bank profitability drivers (yield on loans vs cost of deposits).
Analyze risk-weighted assets (RWA) and loan loss reserves.
Evaluate retail customer acquisition costs (CAC) and deposit stickiness in digital-only banking.

Lesson Overview

Master Net Interest Margin (NIM) expansion, credit underwriting risk, Basel III capital reserve requirements, and digital-first neo-banking cost models.

Imagine your interviewer says: "Your client is MetroBank, a traditional regional bank with 300 branches. Rising interest rates have forced them to increase deposit interest to retain customers, while their long-term mortgages yield fixed low rates. Their Net Interest Margin (NIM) has shrunk by 1.2%. How would you advise them to recover profitability?"

Why This Matters for Consulting Interviews

Financial services cases test your understanding of balance-sheet driven business models, where capital itself is the inventory and leverage is highly regulated.

Prerequisites

Case Math
The MECE Principle

Related Frameworks

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