Company X has EBITDA of $500mm and was acquired 6/30/15 by Toshiba. How would you adjust EV/EBITDA given that EV is a full year value? What other adjustments would you consider?
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William Blair IB Interview Questions
William Blair investment banking interview questions from candidate reports. Format, core technicals, and the sector-focused questions William Blair tends to ask.
William Blair rewards candidates who are solid on the fundamentals and show genuine interest in the group and its sectors. William Blair is a middle-market investment bank with a strong growth-company M&A and equity practice. First rounds stay close to the core technicals; later rounds get more sector-specific.
OFFERGOBLIN tags every William Blair-specific question candidates have reported. Use Bank & Round mode in the Accelerated tier to drill the core technicals plus the sector-flavored follow-ups William Blair tends to ask.
Sample William Blair IB Interview Questions
A short sample from the full bank. Tap an answer to reveal it.
- William Blair
If the $500mm is a six-month stub (January 1 to June 30, 2015), it does not match EV, which is a full-year value, so the denominator needs a full twelve months of EBITDA. If the $500mm is already annual, no period adjustment is needed. Use LTM (last twelve months) EBITDA ending 6/30/15, the deal date. With only the stub, annualize it: $500mm × 2 = $1,000mm. Then normalize that EBITDA for one-time items, acquisitions or divestitures made during the period, and accounting differences before you compare the multiple with other deals.
- William Blair
A company has $1bn revenue in YR0 and 10% CAGR with a 10% constant EBITDA margin. It was purchased at 10x EV/EBITDA, with 4x EBITDA of debt and no interest. Assume that the company was sold at $1.3bn at year 3 and that it pays back $100mm of the debt after each year. How much equity does the financial sponsor have at the end of year 3?
The financial sponsor (the private equity firm that bought the company) has $1,200mm of equity at the end of year 3. It paid $1,000mm (10x the $100mm of year-0 EBITDA), funded with $400mm of debt and $600mm of its own equity. Three $100mm paydowns cut the debt to $100mm, and the $1,300mm sale price minus that $100mm leaves $1,200mm for the sponsor. The 10% revenue growth does not change the answer, because the sale price is already given.
- William Blair
How does debt affect equity in an LBO?
Debt shrinks the equity check (the cash the private equity buyer puts in itself) because in an LBO, or leveraged buyout, borrowed money funds most of the purchase price. Lenders are owed a fixed amount. So every gain in enterprise value (the value of the whole business) goes to equity, and so does every dollar of debt repaid from the company's cash flow. A modest rise in the business's value becomes a much larger percentage return on that smaller check. It cuts both ways. Equity sits behind the debt, so it absorbs a fall in value first, and leverage magnifies losses just as it magnifies gains.
- William Blair
A company has $1bn revenue in YR0 and 10% CAGR. Assume the company has a 10% EBITDA margin (constant), it's trading at 10x EV/EBITDA, is able to borrow at 4x EBITDA and has no interest. How much equity must a financial sponsor pay upfront?
The sponsor pays $600m of equity upfront. YR0 EBITDA is $1bn × 10% = $100m, so the purchase price is 10x × $100m = $1,000m. Debt covers 4x × $100m = $400m. Equity funds what's left: $1,000m − $400m = $600m.
- William Blair
A company has $1bn revenue in Year 0 and 10% CAGR. Calculate the revenues for years 1, 2, and 3.
Revenue is $1,100M in Year 1, $1,210M in Year 2, and $1,331M in Year 3. A 10% CAGR (compound annual growth rate, the steady yearly rate that links a starting value to an ending value) means you multiply each year's revenue by 1.1. The growth compounds on the prior year's number. You do not add a flat $100M each year.
- William Blair
LBO multi-step problem: Step 1: A company has $1bn revenue in yr0 and 10% CAGR, calculate its revenue of yr1, yr2 and yr3. Step 2: Assume the company has 10% EBITDA margin, is the target of an LBO transaction at 10x EBITDA, is able to borrow at 4x EBITDA with no interest, cash flow is used to amortize the debt, how much equity investment does a financial sponsor have to pay upfront? How much equity does the financial sponsor have at the end of yr3? Step 3: Assume the company was sold at $1.3bn at yr3, what's the equity value? What's the IRR? What's expected IRR usually? Step 4: If we were to leverage at 7x EBITDA, what would you require of the target company?
Revenue grows 10% a year to $1,100m, $1,210m and $1,331m. At a 10% margin, year-0 EBITDA is $100m, so the purchase price is $1,000m. The loan is $400m, so the sponsor puts in $600m of equity. Years 1–3 EBITDA of $364m pays debt down to about $36m, which puts year-3 equity at about $964m at the entry valuation. Sell for $1.3bn and about $1,264m of equity is left. That is roughly 2.1x the money in, or about a 28% IRR. Sponsors usually target about 20–25%. For 7x leverage, the target needs large, stable, predictable cash flow that can service and repay much more debt.
- William Blair
If you buy a company and bring in $500mm after the acquisition, how does that affect EV/EBITDA? Assume you add $500mm to EBITDA.
It depends on the price you pay. The purchase price goes into enterprise value, and the target's $500mm goes into EBITDA. Pay a higher multiple than your own current EV/EBITDA and the combined multiple rises. Pay a lower one and it falls. Pay the same and it stays put.
- William Blair
Given a DCF analysis, how would you identify and correct common errors?
Systematically audit the WACC inputs, verify FCF excludes interest and has correct NWC signs, ensure the terminal growth rate stays below nominal GDP with a normalized FCF, check the EV-to-equity bridge, and sanity-check implied multiples.
- William Blair
LBO case: $1bn EV, $1bn sales, 10% EBITDA margin (so $100mm EBITDA), debt is 4x EBITDA, 10% growth annually.
About 2.0x MOIC and about a 15% IRR, assuming a standard five-year hold, an exit at the entry multiple, and debt held flat at $400mm. MOIC (multiple on invested capital) is what the buyer's equity is worth at exit divided by what it put in. IRR (internal rate of return) is the same gain as an annual compound return. The buyer pays $1bn of EV (enterprise value, the price of the whole business) for $100mm of EBITDA (earnings before interest, taxes, depreciation and amortization, a rough measure of operating cash profit). That is 10x, funded with $400mm of debt and $600mm of equity. EBITDA grows to about $161mm and the business sells for about $1.61bn. Repay the $400mm of debt and the equity is worth about $1.21bn, roughly 2x the $600mm invested.
- William Blair
What makes a good LBO candidate?
A good LBO candidate has strong, predictable free cash flow, low capital expenditure needs, a defensible market position, room to improve margins and clear ways to grow. A leveraged buyout (LBO) is an acquisition paid for mostly with borrowed money. The company's own cash flow has to cover the interest and repay the debt every year. The other traits make the business worth more at exit.
- William Blair
Given the LBO case with $1bn EV, $1bn sales, 10% EBITDA margin ($100mm EBITDA), debt at 4x EBITDA, and 10% annual growth, what is the IRR?
The IRR is about 15%. Assume a five-year hold, an exit at the same 10x multiple paid at entry, and debt held at $400mm. The $600mm of equity grows to about $1.21bn, roughly 2.0x the money put in, or about 15% a year. IRR (internal rate of return) is the annual compound return on the equity invested. EBITDA (earnings before interest, taxes, depreciation and amortization) is a stand-in for operating cash profit.
- William Blair
Walk me through the M&A sell-side process.
A typical sell-side process runs in five stages: preparation, Round 1, Round 2, negotiation and signing, then closing. First the bank prepares the marketing materials and a buyer list. Next it collects non-binding first bids. Then it gives the best bidders full diligence access and collects binding final bids. Last, it negotiates the purchase agreement with the winner, signs, and closes after approvals.
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