Walk me through an LBO

Why this question is asked

Walk me through an LBO is the one question that appears in almost every private equity technical round. It is asked on Superday screens, in associate processes, and in laterals from banking, consulting, and operating roles. Interviewers are not testing whether you can recite a definition of a leveraged buyout. They are testing whether you hold the whole capital structure in your head at once and can move between operating performance, debt, and equity returns without losing the thread.

The question is a filter for three skills that sit on a live deal. First, can you keep sources and uses, the operating case, and the returns math in one sequence. Second, can you do that with rounded mental math rather than a spreadsheet. Third, can you interpret the result. A 2.0x MOIC over five years is a 15 percent IRR. Whether that is a good deal depends on the fund hurdle, the risk of the case, and how much of the return comes from multiple expansion rather than operations or paydown.

The answer should take between ninety seconds and three minutes. Candidates who ramble fail not because the mechanics are wrong but because the sequence is disorganised. Sequence is the score. If you skip sources and uses, the interviewer cannot check your equity check. If you quote MOIC without a hold period, the IRR is unverifiable. If you forget remaining debt at exit, every downstream number is wrong.

Funds use this question because it is cheap to administer and hard to fake. A candidate who has only watched videos will stall on debt paydown. A candidate who has built models but never said the steps out loud will bury the equity check. The people who pass have rehearsed the same five-part structure until they can substitute any set of inputs without thinking about the order.

The 60-second answer

If the interviewer asks for the short version, give this and stop. You can expand any step if they ask a follow-up.

We buy the company at entry EBITDA times the entry multiple. That is enterprise value. We fund it with debt equal to the leverage multiple times EBITDA, and the rest is sponsor equity. Over the hold we grow EBITDA at a stated rate. Free cash flow pays down debt. At exit we apply an exit multiple to exit EBITDA, subtract remaining net debt, and that is exit equity value. Exit equity divided by entry equity is MOIC. Raise that to one over the years and subtract one to get IRR. Then say whether it clears a typical 20 percent target and which assumption it is most sensitive to.

That paragraph is the entire answer. Everything below is how to fill the numbers, how interviewers grade you, and where candidates lose the room.

A worked example with clean numbers

Use round numbers so the arithmetic stays audible. Assume a business with 100 of EBITDA, bought at 10.0x, for an enterprise value of 1,000. Fund it with 5.0x leverage, so 500 of debt and 500 of sponsor equity. Hold for five years. Grow EBITDA at 5 percent per year, which compounds to about 128 in year five. Assume 40 percent of each year's EBITDA sweeps to debt, retiring roughly 220 of the original 500 and leaving about 280 outstanding.

Exit at the same 10.0x on 128 of EBITDA gives an enterprise value of 1,280. Subtract 280 of remaining debt for 1,000 of equity value. Against 500 invested, that is a 2.0x MOIC. IRR equals 2.0 to the power of one fifth, minus one, which is about 15 percent.

Then close with judgement. The deal clears a typical 20 percent target only if you grow EBITDA faster, pay down more debt, or exit above entry. Saying that unprompted is what separates a complete answer from a mechanical one.

How interviewers grade this answer

Most interviewers keep a mental scorecard rather than a written rubric. They listen for four things in order: structure, arithmetic, interpretation, and composure. You can miss a rounding and still pass. You cannot miss the sequence and pass.

Structure is whether you named sources and uses before you talked about growth. The equity check has to appear in the first thirty seconds. If it does not, the interviewer has no baseline and will interrupt you to ask for it. That interruption is a grade, not a clarification.

Arithmetic is whether the numbers are internally consistent. Entry EV must equal debt plus equity. Exit EV must equal exit EBITDA times the exit multiple. Exit equity must subtract remaining net debt. MOIC must use the same equity check you stated at entry. IRR must use the hold period you stated. Interviewers will accept 128 as five years of 5 percent growth on 100. They will not accept an exit equity figure that forgot the remaining debt.

Interpretation is the last thirty seconds. Quote MOIC and IRR, then say what would have to be true for the deal to clear a 20 percent IRR. In the example above, 2.0x over five years is 15 percent. To get to 20 percent you need about 2.5x, which means either more EBITDA growth, more paydown, or a higher exit multiple. Name which of those you would underwrite and which you would not. Multiple expansion is the least controllable, so a complete answer flags it as a risk rather than a plan.

Composure is whether you can take a changed input without restarting. If they say exit at 9.0x instead of 10.0x, you do not rebuild the operating case. You recompute exit EV as 128 times 9.0 equals 1,152, subtract 280 of debt, get 872 of equity, and a 1.7x MOIC. That is roughly 12 percent IRR. The sequence never changes. Only the last two steps do.

• Pass: five-part sequence, audible equity check, MOIC and IRR, one sentence of judgement.
• Borderline: correct math, no interpretation, or a skipped paydown step that you recover when prompted.
• Fail: no sources and uses, remaining debt forgotten, IRR quoted without a hold period, or a three-minute ramble that never lands a number.

Common interview traps

The same five mistakes account for most rejected answers. Learn them as a checklist you run before you start talking.

• Skipping sources and uses and jumping to returns, which leaves the interviewer unable to check the equity check.
• Forgetting to subtract remaining debt at exit, which overstates equity value and inflates MOIC.
• Quoting MOIC without converting to IRR, or converting incorrectly because the hold period was never stated.
• Treating free cash flow as equal to EBITDA. Interest, tax, capex, and working capital all sit between those two lines. In a verbal walk-through, say you are using a simplified sweep, such as 40 percent of EBITDA, so the interviewer knows the shortcut.
• Assuming the exit multiple equals the entry multiple without saying so. Flat multiple is a clean base case. If you silently use a higher exit multiple, you have hidden the entire return in multiple expansion.

What if you get stuck

Getting stuck is recoverable if you stay inside the sequence. Do not invent a new framework mid-answer. Do not apologise and restart from the definition of an LBO. Name the step you are on, state the assumption you need, and ask for it if the interviewer has not given it.

If you lose the debt balance, restate entry debt and your sweep rule, then estimate remaining debt as a round number. Interviewers prefer an explicit estimate to a frozen silence. If you lose the IRR conversion, quote MOIC and the hold period and say you will convert in a second. The pairs worth memorising are 2.0x over five years at 15 percent, 2.5x over five years at 20 percent, and 3.0x over five years at 25 percent.

If the interviewer gives messy numbers, round them out loud. One hundred and seven of EBITDA at 9.7x becomes 100 at 10.0x unless they tell you they want precision. Announce the rounding. That is how practitioners talk on a live deal.

Paper LBO versus the verbal walk-through

They overlap and they are not the same test. Walking through an LBO is the verbal structure. A paper LBO asks you to produce specific return figures from given inputs, usually on paper, under a ten to fifteen minute clock. The LBO modeling test is the longer Excel version of the same sequence, often two to three hours, with a debt schedule that has to tie.

Prepare them as one skill with three time boxes. Ninety seconds for the verbal walk-through. Fifteen minutes for the paper LBO. Three hours for the modeling test. The five-part sequence does not change. The amount of paper and the number of tranches does.

If you can say the walk-through cleanly, the paper LBO is the same steps with a grid. If you can finish a paper LBO without losing the equity check, the modeling test is the same steps with interest, amortisation, and a revolver. Practice the verbal form first. It is the cheapest way to find out which step you drop under pressure.

• paper LBO practice
• LBO returns calculator
• LBO modeling test
• leveraged buyout
• what is IRR
• what is MOIC

How to rehearse it

Reading this page is not practice. Say the five-part answer out loud against a clock until the sequence is automatic, then vary the inputs so you are not memorising one set of numbers. Change entry multiple, leverage, growth, hold period, and exit multiple one at a time. Keep the equity check audible every time.

The free paper LBO practice desk on this site runs the same five steps as a timed challenge and grades each checkpoint. Use it to find out which step is costing you time before an interviewer does. The LBO returns calculator lets you stress the same case for MOIC and IRR without rebuilding the story. The glossary pages for leveraged buyout, IRR, and MOIC are the definitions you should be able to give in one sentence if a follow-up asks for them.

Once the verbal form is automatic, move to the LBO modeling test guide and practice the three-hour format. The walk-through is the spine. The test is the spine with a workbook attached.

• paper LBO practice
• LBO returns calculator
• LBO modeling test