Anyone preparing for an investment banking interview quickly spots a reassuring pattern: the questions are largely predictable. Banks aren't testing your talent for improvisation, but whether you have a firm grasp of the fundamentals, think in a clear structure and fit into the team. Those three things are exactly what you can prepare for.

An IB interview typically consists of two blocks: technical questions (accounting, valuation, DCF, M&A, LBO) and behavioral or fit questions (motivation, strengths, teamwork). On top of that come the occasional brainteaser and market question. Anyone who takes both blocks seriously has the decisive edge – because many candidates fail not on technical knowledge, but on the missing structure of their answers.

In this article you'll get the most important questions from every category with concise model answers, concrete examples such as the classic "Walk me through a DCF", expert tips, typical mistakes and a clear roadmap for your preparation.

Why interview preparation is decisive

Investment banks receive hundreds of applications from highly qualified candidates for every junior position. On paper, many are barely distinguishable. The interview is therefore where offers are decided – and it rewards preparation disproportionately.

The crucial point: technical questions usually have one correct answer. Anyone who can cleanly explain "Walk me through a DCF" immediately shows they have mastered the basics. Anyone who stumbles often disqualifies themselves in the first few minutes. That is what makes this part so rewarding – you can control it almost 100 %.

With behavioral questions, on the other hand, it's less about the "perfect" answer than about clarity, self-reflection and a credible "Why investment banking". Both blocks can be prepared systematically. That is exactly what separates the successful candidates from the caught-off-guard ones.

Fundamentals: The four question categories

Almost every interview question can be assigned to one of four categories. Anyone who knows this structure can prepare in a targeted way instead of getting lost in an endless list of individual questions:

• 1. Behavioral / fit: motivation, background, strengths and weaknesses, teamwork, "Why this bank?".
• 2. Technical: accounting (the three financial statements), valuation, DCF, M&A and LBO – the technical core.
• 3. Market & deals: current transactions, a company that interests you, your view of the market.
• 4. Brainteaser: logical or mathematical puzzles that test your structured thinking under pressure.

Behavioral & fit questions (with answers)

These questions seem simple, but they often decide whether the team wants you in the room. Answer specifically, honestly and in a structured way – ideally using the STAR logic (Situation, Task, Action, Result).

Technical questions: accounting, valuation, M&A, LBO

The technical core. Here precision counts. The following questions are among the absolute classics – they come up in some form in almost every interview.

How do the three financial statements connect?

Net income from the income statement flows into the cash flow statement (at the top) and increases equity on the balance sheet (retained earnings). Non-cash items such as depreciation are added back in the cash flow statement. The resulting closing cash balance in turn lands on the balance sheet. That closes the loop – and the balance sheet balances.

Depreciation increases by 10 – what happens across all three statements?

The classic used to test your understanding of the linkage. Assuming a tax rate of 30 %:

What valuation methods are there?

The three core methods: comparable companies (multiples of comparable listed firms), precedent transactions (multiples from past M&A deals) and the DCF analysis (present value of future cash flows). Comps and precedents deliver a relative, market-based valuation; the DCF an intrinsic one. Precedent transactions usually come out highest because of the takeover premium.

What is the difference between enterprise value and equity value?

Equity value is the value for the equity holders (market capitalization). Enterprise value is the value of the entire operating business, independent of the financing structure: equity value plus net financial debt (debt minus cash) and other items. In short: enterprise value = equity value + net debt.

What drives the return in an LBO?

In a leveraged buyout, a financial investor buys a company predominantly with debt and an equity portion. The return comes from three levers: debt paydown via free cash flow (deleveraging), EBITDA growth during the holding period and a possible multiple expansion at exit. The more debt is repaid, the larger the equity share of the exit value.

Practical example: "Walk me through a DCF"

Perhaps the single most important question in the entire technical block. A clean, structured answer in five steps:

Expert tips for strong answers

• Structure before speed. Begin technical answers with a short roadmap ("I'll go through this in five steps ..."). That signals clarity and gives you something to hold on to.
• Practice out loud, not just in your head. An answer you know in your head often sounds clumsy when spoken. Simulate real interviews with friends or people from your network.
• Think out loud on brainteasers. With a puzzle, the reasoning matters more than the result. Verbalize your assumptions step by step.
• Prepare your own questions. At the end you get to ask – use it for smart, well-researched questions about the team or current deals.
• Connect the blocks. Your motivation ("Why IB?") comes across as more credible when you show in the technical part that you have really engaged with the material.

Common interview mistakes

• Learning only behavioral or only technical. Both blocks count. Anyone who neglects one falls through by the second round at the latest.
• Rattling off memorized answers. Interviewers spot rehearsed scripts immediately and probe deliberately. Without genuine understanding, the facade cracks.
• Guessing when you have a knowledge gap. An honest "I'm not sure, but here's how I'd approach it ..." is better than a wrong, confident answer.
• Mixing up the bank. Generic "Why this bank?" answers or incorrect deal references come across as careless.
• Starting too late. Technical knowledge needs repetition. Anyone who starts only a week before has too little time for genuine understanding.

Best practices for preparation

Structured preparation beats aimless googling. A proven roadmap:

1. First build a solid foundation in accounting and valuation – everything else rests on it.
2. Work through the core questions (three financial statements, DCF, LBO, EV vs. equity value) until you have them down cold, including the typical follow-ups.
3. Review regularly instead of cramming once – distributed learning (spaced repetition) anchors knowledge for the long term.
4. Prepare your behavioral stories using STAR and practice them out loud.
5. Simulate at least one or two real mock interviews under realistic conditions.

Overview: Question categories & weighting

The weighting varies by bank and round – technical and behavioral almost always form the main focus.

What moves you forward – and what holds you back

Frequently asked questions about the IB interview

Conclusion

The investment banking interview is not a game of chance, but a test you can prepare for. The questions fall into a few recurring categories – behavioral, technical, market and brainteaser – and you now know the most important ones, complete with model answers. The decisive difference lies not in talent, but in genuine understanding: anyone who has truly grasped the logic behind DCF, LBO and the financial statements will also handle the follow-up questions with confidence.

Build a solid foundation, review regularly and practice your answers out loud. That is exactly what structured preparation is designed for – and that is what separates the offers from the rejections in the end.