William Blair Paper LBO 2027: 5-Part Question & How to Tackle It
The William Blair paper LBO is Blair's signature technical: interviewers give you entry assumptions and expect you to build an LBO on paper — entry price, debt paydown, exit, IRR — with no Excel. For the 2027 intake, candidates say it comes up at almost every stage, and it is where Blair interviews are won or lost.
What the William Blair Paper LBO Looks Like
The paper LBO is a defining feature of Blair's process. Candidates report it from first round through superday: the interviewer gives assumptions — entry EBITDA, entry multiple, debt amount and terms, growth, exit multiple, hold period — and you walk the LBO on paper or verbally. Sometimes guided in parts, sometimes with pushback on your assumptions mid-stream. Reported technicals: entry/exit mechanics, debt paydown from FCF, IRR and MOIC, debt types, and IRR drivers. Blair is not testing full-model building — it is testing whether you understand how leverage creates returns, and whether you can do the math while explaining your thinking.
The 5-Part William Blair Paper LBO Framework
Part 1 — Entry: entry EV (EBITDA × multiple), sources and uses (debt vs. equity check). Part 2 — Debt paydown: project annual FCF, pay down debt, track the declining balance and interest. Keep it simple — interviewers forgive simplification, not confusion. Part 3 — Exit: exit EV (exit-year EBITDA × exit multiple), subtract remaining debt, arrive at sponsor equity value. Part 4 — Returns: MOIC = equity out ÷ equity in; approximate IRR from MOIC and hold period (2.0x over 5 years ≈ 15%). Part 5 — Drivers: the three IRR levers — debt paydown (deleveraging), EBITDA growth, multiple expansion — and which mattered most in your walk. Narrate every number as you write; silent scribbling makes interviewers nervous.
How to Practice the William Blair Paper LBO
Practice the way Blair tests: on paper, out loud, with pushback. First, memorize the five parts until they flow without notes. Second, drill simple numbers — $50–100M EBITDA, 8–10x multiples, 50–60% leverage — full walk in under 10 minutes. Third, rehearse the pushbacks: "What if the exit multiple drops a turn?" "What creates more value — paydown or EBITDA growth?" "Walk me through the debt tranches." Blair probes assumptions, so practice defending yours. Our product includes Blair's real paper LBO questions with fully worked paper solutions — practice the actual 5-part format, not generic theory.
The paper LBO is the highest-leverage hour of Blair prep. Walk it cleanly and you signal readiness for live deals; fumble it and nothing else matters. In the 2027 intake this question will appear — the only variable is whether you rehearsed it or meet it for the first time across the table. Do not wing a boutique's signature question.
FAQ
How long does the paper LBO take in the interview? Typically 10–20 minutes of a 30-minute interview — guided in parts or one continuous build.
Do I need to memorize IRR formulas? Know how to approximate IRR from MOIC and hold period, and what drives it. Intuition — deleveraging, growth, multiple expansion — beats recitation.
What is the most common paper LBO mistake? Forgetting debt paydown accrues to equity: computing exit EV correctly, then forgetting to subtract remaining debt.
Is the paper LBO asked at every stage? Candidates report it at nearly every stage, first rounds through superdays. Prepare as if guaranteed — functionally, it is.
Preparing for William Blair's Paper LBO? Our 2027 William Blair Online Pre-recruiting Assessments Questions & Answers has the exact questions and answers — $79 one-time, instant download.
