Investment banking interviews consistently test three things: technical knowledge, behavioral and fit questions, and communication under pressure. Many candidates spend 90% of their time memorizing technical questions, then struggle because they can't explain their thinking. A better approach splits preparation across all three areas.
A good weekly breakdown looks like this:
The exact percentages matter less than making sure you're practicing all three.
Interviewers rarely reward memorized definitions. Instead of memorizing that enterprise value equals equity value plus debt minus cash, understand why debt increases enterprise value and cash reduces it. The same applies to accounting: rather than memorizing that depreciation lowers net income, be able to walk through the entire financial statement impact.
Being able to explain this process confidently is far more valuable than reciting individual facts.
Many technically strong candidates lose offers because their behavioral answers feel generic. Prepare clear stories for questions like:
Each story should have a beginning, middle, and end with a specific result. Instead of saying you improved a student organization's recruiting process, say: "We redesigned our recruiting workflow, increased applications from 45 to 73 students, and reduced interview scheduling time from two weeks to four days." Specific numbers make stories more believable.
Reading interview guides is passive. Real interviews require speaking clearly while thinking. Every technical concept you learn should eventually be explained aloud without notes — if you can't explain a DCF in two minutes without reading, you probably don't know it well enough yet. Recording yourself is surprisingly effective, since you'll notice filler words, awkward pauses, and unclear explanations immediately.
Once you've covered the material, start doing full mock interviews that mix behavioral and technical questions together instead of practicing them separately — for example: walk me through your resume, why investment banking, how do the three statements connect, why does depreciation affect free cash flow, walk me through a DCF, tell me about a difficult teammate. Switching between question types is part of the challenge.
Here's an example four-week plan:
This gives enough repetition to build confidence without overwhelming yourself.
Completing 2,000 practice questions isn't helpful if you never understand your mistakes. After every practice session, ask yourself: Why did I get this wrong? Could I explain this without notes? Would I sound confident saying this in an interview? Reviewing mistakes often teaches more than learning new material.