Private equity is the business of buying whole companies, usually with a great deal of borrowed money, improving them for a few years and then selling them on. The leveraged buyout is the transaction at the centre of it, and it is the most heavily tested topic in private equity interviews, from what makes a good LBO candidate to walk me through a paper LBO on this napkin. This deck starts with what a PE firm actually does and why debt magnifies returns, then builds up through sources and uses, the capital structure, and the returns arithmetic interviewers expect you to do in your head. No prior exposure to buyouts assumed.
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Card 1 of 18
You mention you are interviewing at a private equity firm and a friend asks what that even is. What do private equity firms actually do?
A private equity firm buys whole companies with investors’ money, improves them, and sells them years later.
A private equity firm raises a large pool of money from outside investors, uses it to buy entire companies outright, holds each one for roughly three to seven years while trying to make it more profitable, and then sells it. The profit is the gap between what the firm paid and what it eventually sells for. The key difference from owning shares in a public company is control: because the firm owns the whole business, it can change management, strategy, pricing and cost structure directly rather than voting from the sidelines.
Card 2 of 18
Before you get anywhere near the technicals, your interviewer wants the intuition. How is a private equity firm buying a company like a person buying a house with a mortgage?
Put in a small slice of your own money, borrow the rest, and the whole asset’s gain lands on your slice.
Say you buy a house for 500, putting in 100 of your own cash and borrowing 400 as a mortgage. Sell it later for 600, repay the 400, and you walk away with 200. The house went up only 20 percent, but your money doubled, because the lender’s return was fixed at the interest rate and every extra pound of gain landed on you. That borrowed money is called leverage, and a buyout works on exactly this arithmetic, with a company in place of the house and its cash flow in place of your salary paying the mortgage.
Card 3 of 18
What actually happens in a leveraged buyout, step by step?
A sponsor buys a company mostly with borrowed money, the company repays that debt, and the sponsor sells later.
A private equity firm, usually called the sponsor, agrees a price for a target company and funds the purchase with a large slice of borrowed money plus a smaller cheque of equity from its own fund. The crucial mechanic is that the debt is placed on the acquired company’s balance sheet and serviced out of that company’s own cash flow, not out of the sponsor’s pocket. Over the holding period the company pays interest and chips away at principal, and at exit the sale proceeds repay whatever debt remains, with everything left over belonging to the sponsor.
Card 4 of 18
A candidate tells your interviewer that private equity firms invest their own money. She pushes back. Where does the money in a PE fund really come from, and how does the firm get paid?
Outside investors supply nearly all the capital, and the firm earns a fee plus a share of the profits.
The capital comes from limited partners, or LPs: pension funds, endowments, insurers and wealthy families who commit money to a fund but take no part in running it. The firm itself is the general partner, or GP, which manages the fund and typically invests one to two percent of the total alongside its LPs. The classic economics are roughly two percent a year in management fees on the capital committed, plus carried interest of about twenty percent of the profits once returns clear a hurdle rate, a minimum annual return often set near eight percent. Actual terms vary by firm and by fund.
Card 5 of 18
Your associate hands you a list of five companies and asks which ones might work as a buyout. What makes a company a good LBO candidate?
Predictable cash flow first, then low reinvestment needs, a defensible position, and room to improve.
Above everything else you want steady, predictable cash flow, because the debt carries interest and principal payments that fall due whether trading is good or bad. You also want modest capital expenditure, meaning the company does not have to sink large sums into equipment or property just to keep running, since that cash is needed for the lenders. A defensible market position, long-term contracts or a recognisable brand protect the revenue, hard assets give lenders collateral to lend against, and low existing debt leaves room to add more. Cyclical businesses and cash-hungry early-stage companies are poor fits for the same reasons.
Card 6 of 18
Your VP wants a sources and uses table on the Northbay Logistics buyout by tomorrow morning. What is it, and what has to be true of it?
Uses list everything the deal has to pay for, sources list where that money comes from, and the two must tie.
Uses set out every pound the deal must fund: the price paid for the target’s equity, the repayment of existing debt that the lenders will insist is cleared, and transaction and financing fees. Sources set out where that money comes from: each tranche of new debt, the sponsor’s equity cheque, sometimes cash already sitting on the target’s balance sheet, and occasionally equity rolled over by existing management. The two columns must equal each other exactly, and in practice sponsor equity is the plug: you fix the price and the debt the lenders will provide, then the equity is whatever is still missing.
Card 7 of 18
A junior asks why the Northbay deal has three different layers of financing instead of one big loan. What sits in an LBO capital structure, and who gets paid first if things go wrong?
Senior debt is paid first and costs least, and equity is paid last but keeps whatever upside is left.
Senior secured debt sits at the top: it is backed by the company’s assets, carries the lowest interest rate, and is repaid before anything else. Below it sits subordinated or mezzanine debt, which is unsecured, charges a higher rate to compensate, and sometimes comes with an equity kicker such as warrants. The sponsor’s equity sits at the bottom and receives only what is left after every lender has been paid. Layering the financing this way lets the sponsor borrow more in total than any single lender would provide, because each layer is priced for the risk it actually takes.
Card 8 of 18
Your interviewer says leverage is what makes buyout returns work, then asks what happens when a deal goes badly. Why does debt magnify both directions?
Debt has a fixed claim, so the entire swing in company value lands on the thin slice of equity underneath it.
Take a company bought for 1,000 with 700 of debt and 300 of equity. Sell it for 1,300, repay the 700, and the equity is 600, doubled on a 30 percent rise in the business. Sell it for 700 instead and the lenders take all of it, leaving the equity at zero on an identical 30 percent move the other way. Lenders are owed a fixed amount regardless, so every gain and every loss above that fixed claim belongs to the equity, which is why interviewers treat leverage as the source of both the returns and the risk.
Card 9 of 18
Your MD glances at the returns page and asks for both the IRR and the multiple of money. What does each one measure, and why do sponsors always quote both?
MOIC says how many times your money came back, IRR says how fast, and neither is complete alone.
MOIC, the multiple of invested capital, is simply total cash returned divided by cash invested: put in 300, take out 900, and you have made 3.0x. It says nothing about how long that took. IRR, the internal rate of return, is the annualised rate that accounts for timing, so the same 3.0x is roughly a 44 percent IRR over three years but only about 17 percent over seven. Quoting both stops either number flattering a deal on its own, since a quick small win can post a spectacular IRR on very little absolute profit.
Card 10 of 18
Where does the cash a portfolio company generates actually go each year while a sponsor owns it?
Spare cash pays down debt, and every pound of debt retired becomes a pound of sponsor equity.
After the company covers its operating costs, working capital, capital expenditure, interest and taxes, whatever free cash flow is left usually goes straight to repaying debt, often because the loan agreement contains a cash sweep clause requiring exactly that. Since the sponsor’s equity is simply enterprise value minus debt, each pound of debt retired lifts equity by a pound even if the business is worth no more than the day it was bought. This is why the debt schedule is the beating heart of an LBO model and why an analyst is expected to be able to walk through it line by line.
Card 11 of 18
Your interviewer asks where the money in a successful buyout actually comes from. What are the three levers of value creation, and which one would you not lean on?
Returns come from debt paydown, EBITDA growth, and multiple expansion, and you control only the first two.
Debt paydown converts the company’s cash flow into equity value, as you have seen. EBITDA growth raises the earnings that any exit multiple gets applied to, whether through higher revenue, better margins or bolt-on acquisitions. Multiple expansion means selling the business at a higher multiple of EBITDA than you paid for it, which depends largely on market conditions and how the company is positioned at the point of sale. A strong answer notes that the first two are operational and within the sponsor’s influence, while the third is close to market timing, so investment committees rarely underwrite a deal that needs it.
Card 12 of 18
The interviewer slides a blank sheet across the table and says: walk me through a paper LBO, no calculator, ten minutes. What is she actually asking for?
A paper LBO is the whole buyout arithmetic done by hand, from entry price to exit equity to returns.
You start from EBITDA and an entry multiple to get enterprise value, split that into debt and sponsor equity, then project EBITDA forward a few years and subtract interest, taxes and capital expenditure to see how much debt gets repaid along the way. At exit you apply an exit multiple to the final year’s EBITDA, subtract the debt still outstanding, and what remains is the equity. Divide that by the equity you put in for MOIC, and annualise it for a rough IRR. The exercise tests structure and composure more than arithmetic, so state each assumption out loud and keep the numbers round.
Card 13 of 18
Halfway through a model review your VP deletes the exit multiple and asks you to justify it from scratch. Why does that single assumption carry so much weight?
Most of a buyout’s value is realised at exit, so the exit multiple quietly drives the whole return.
Exit value is exit EBITDA multiplied by the exit multiple, and unlike a dividend along the way, the bulk of the sponsor’s cash arrives in that one moment. On a business earning 140 of EBITDA, a single turn of multiple is 140 of enterprise value, and because the debt is repaid at a fixed amount, all of that difference lands on the equity. The common convention is to assume the exit multiple equals the entry multiple, which forces the return to be earned through operations and debt paydown rather than through an assumption that the market will simply be kinder on the way out.
Card 14 of 18
Marlstone Capital has owned Calder Foods for five years and wants out. What are the usual exit routes, and what pushes a sponsor towards one over another?
Sell to a strategic buyer, sell to another sponsor, or float it, and market conditions usually decide.
A sale to a strategic buyer, meaning an operating company in the same industry, often fetches the highest price because the buyer can fold in the business and realise synergies that no financial buyer can. A secondary buyout means selling to another private equity firm, which is quick and clean but capped by that firm’s own return requirements. An initial public offering lists the shares publicly, though the sponsor usually sells down over several tranches rather than exiting in one go, so proceeds depend on how the stock trades after listing. Size, sector appetite and the state of the debt markets drive the choice.
Card 15 of 18
Three years into the Northbay hold the company is performing well but the market for exits has frozen. Your MD mentions a dividend recapitalisation. What is that?
The company borrows fresh debt and pays the proceeds out to its owner, returning cash without a sale.
In a dividend recapitalisation the portfolio company raises new debt and uses the proceeds to pay a special dividend up to the fund that owns it. The sponsor takes cash off the table without selling anything, which reduces the equity still at risk and lifts IRR by pulling money forward in time, though it does not change the underlying business at all. The trade-off is more leverage on a company that still has to service it, so lenders will only allow it where cash flow comfortably covers the larger interest bill, and it is often viewed as an aggressive move when trading later disappoints.
Card 16 of 18
What is a debt covenant, and why does a sponsor negotiate the terms as hard as the interest rate?
Covenants are the conditions attached to a loan, and breaching one hands the lenders leverage over the deal.
Covenants are promises written into a loan agreement. A maintenance covenant requires the borrower to stay inside a financial test at every reporting date, most commonly a leverage ratio such as debt to EBITDA below an agreed level, or an interest coverage ratio above one. An incurrence covenant only applies when the company takes a specific action, such as raising more debt or paying a dividend. Breaching a covenant is a default, and it lets lenders renegotiate terms, demand repayment, or in serious cases take control, so headroom between the test and the forecast matters as much as the coupon. How tight covenants run varies a great deal with market conditions.
Card 17 of 18
Two bidders are circling Calder Foods, a large food group and a private equity fund. Why can either one end up as the higher bidder depending on the situation?
A strategic buyer pays for synergies it keeps forever, a sponsor is capped by the return it must earn.
A strategic buyer folds the target into an existing business, so it can strip out duplicated costs or push products through its own distribution, and it never has to sell, which lets it rationally pay above what the company is worth on its own. A financial buyer works backwards instead: it starts from the return it has promised its LPs, assumes an exit in five years, and solves for the highest price that still clears that hurdle, so its ceiling is set by how much debt it can raise and how confident it is in the exit. When credit is cheap and plentiful, or when the target is non-core to every strategic in the sector, the sponsor wins.
Card 18 of 18
Last question of the interview. Your Northbay model shows 2.7x exiting at 8.0x EBITDA. She asks what happens if you exit at 7.0x instead, and whether the deal still works.
One turn of multiple compression comes straight off the equity, because the debt claim never shrinks.
Exiting at 7.0x on 140 of EBITDA gives 980 of enterprise value instead of 1,120, and because the 300 of remaining debt is repaid in full regardless, the whole 140 comes out of the equity: 680 rather than 820, so 2.3x instead of 2.7x and roughly an 18 percent IRR rather than 22. Whether that still works depends on the fund’s hurdle, and many committees would call it acceptable but thin. The same arithmetic run upwards is why paying one turn too much at entry is so hard to recover from, and why every LBO model carries a sensitivity table across entry and exit multiples.
Reading is not the same as remembering. Study this deck with scheduled review so the cards come back before you forget them.