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Investment Banking Mock Interview: How to Run One That Actually Prepares You
A useful investment banking mock interview copies the real thing: timed, out loud, no notes, mixing fit, behavioral and technical questions, and scored honestly afterward. Most candidates should do three to five full mocks before a first round and at least one back-to-back, superday-length session before a superday.
What a real investment banking interview looks like
Before you can practice the format, you need to know it. Most banks run two stages:
- First round: usually around 30 minutes with one or two bankers, often by video. Expect a resume walkthrough, "why banking" and "why this firm," one or two behavioral questions, and three to six technical questions.
- Superday: several back-to-back interviews in one day, typically with people from analyst up to managing director. Each interviewer leans differently: analysts and associates tend to push harder on technicals, while VPs and MDs care more about judgment, your story, and whether they want to work with you.
A mock interview that only drills flashcards, or only covers fit, prepares you for half of that.
How to run a mock interview, step by step
1. Pick the format
Decide whether you're rehearsing a 30-minute first round or a multi-round superday. The format sets the length, the mix of questions, and how tired you'll be by the end, which matters more than people expect.
2. Build a question set you haven't seen
Mix fit, behavioral and technical questions, and have someone else choose them, or draw them at random. Answering questions you already rehearsed this morning tells you nothing.
3. Answer out loud, on a timer, with no notes
Speaking is a different skill from knowing. Most of the problems that sink candidates (rambling, losing the structure halfway through a DCF walkthrough, freezing on a number) only show up when you say the answer out loud under time pressure.
4. Record it and score every answer
Use a simple rubric (below) and score each answer right after the session, while it's fresh. A recording makes filler words and long pauses obvious.
5. Re-drill the misses within two days
The value of a mock is the list of answers it exposes. Practice each weak answer again until you can give it cleanly, then run the next mock with new questions.
A sample 30-minute first-round mock
0–3 min: Walk me through your resume
3–8 min: Why investment banking? Why this firm?
8–12 min: One behavioral question (a time you led a team, handled a mistake, or disagreed with someone)
12–25 min: Four or five technicals across accounting, enterprise value, valuation, DCF, and M&A or LBO
25–30 min: Your questions for the interviewer
Sample investment banking mock interview questions
Fit and behavioral
- Walk me through your resume.
- Why investment banking, and why our firm specifically?
- Tell me about a time you worked on a team that wasn't working well. What did you do?
- Tell me about a mistake you made and how you handled it.
- Walk me through a deal you've followed recently.
Technical
- Walk me through the three financial statements and how they connect.
- If depreciation goes up by $10, walk me through the three statements.
- What's the difference between enterprise value and equity value?
- Walk me through a DCF.
- Is an all-stock acquisition accretive or dilutive if the buyer's P/E is higher than the P/E it pays for the target?
- Walk me through a basic LBO. What drives returns?
For worked answers to the most common technicals, see Investment Banking Technical Questions: the 25 most common, with answers.
How to grade a mock interview
Score every answer on four things. An answer that's technically correct but takes three minutes and wanders still loses points in a real interview.
- Accuracy: are the numbers and the logic right?
- Structure: did you lead with the answer, then explain, in a clear order?
- Concision: could the interviewer follow it without asking you to back up? Most technical answers should take well under a minute.
- Delivery: steady pace, few filler words, and recovering calmly when you get stuck.
Who to practice with
| Option | Cost | Realism | Feedback |
|---|
| Friends or your finance club | Free | Medium | Uneven; depends who's asking |
| Alumni and mentors | Free | High | Good, but hard to get often |
| Paid coaches | Expensive per session | High | Good |
| AI mock interview (ApexIB) | First mock free | High: timed, spoken, multi-round | Every answer graded, available any time |
The best plan uses more than one: an AI mock or a friend for volume, and alumni for a few high-stakes run-throughs close to the real thing.
Common mock interview mistakes
- Only practicing questions you already know, so the mock never finds a gap.
- Typing or reading answers instead of saying them out loud.
- Skipping the scoring, so the same weak answers come back every time.
- Rehearsing fit answers until they sound memorized. Know your points, not a script.
- Never practicing a full superday, then running out of energy by the third interview.
Practice with an ApexIB mock interview
ApexIB runs timed mock interviews that you answer by voice or by typing. Choose a First Round, or a full Superday with three back-to-back rounds against an Analyst, a VP and an MD, each with their own style. Every answer is graded the way a banker would hear it, and you get a report card showing exactly which answers to re-drill. Your first mock interview is free.
Start a mock interview, or read how the AI interviewer works.
Frequently asked questions
How many mock interviews should I do before an investment banking interview?
Three to five full mocks before a first round is a good target, with time between them to fix what each one exposes. Before a superday, do at least one session that runs several interviews back to back.
Can I do an investment banking mock interview for free?
Yes. Friends, finance clubs, alumni and your career center are free, and ApexIB's first mock interview is free.
What questions come up in an investment banking mock interview?
The same mix as a real one: a resume walkthrough, why banking and why the firm, behavioral questions, and technicals on accounting, enterprise value, valuation, DCF, M&A and LBOs.
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