How to answer this technical I was asked at MM firm??

Had no idea how to answer and was stumped. My page was filled with numbers haha but I don't see how this is even possible without a calculator.

A PE firm buys a company for $500 with $300 debt and $200 equity. Tax rate is 50%. All LFCF goes to debt paydown. LFCFs are $90, $100, and $110. Exit EV is $500. An associate discovers SG&A was understated by the same fixed amount each year. After correction, MOIC drops from 2.5x to 2.2x. By how much was SG&A understated per year?

Anyone have any idea how to answer this without breaking out Excel??

4 Comments
 

months late but worth writing up.

the answer is 40 a year. losing 0.3x of moic on 200 of equity is 60 of exit value, that's 20 a year across the three years, and grossed up at the 50% tax rate it's 40 of sg&a.

the intuition is that moic is measured against your equity check, so the 0.3x applies to the 200. that's where people go wrong, anchoring it to the 500 purchase price instead. exit ev never changes here, so the only place the missing 60 can sit is debt you didn't pay down. debt gets paid down with after-tax cash, which is why you gross the 20 back up to reach a pre-tax line like sg&a. the 90/100/110 never enter it. they're there to confirm the 2.5x and to bait you into building the model.

free ib technical flashcards → offergoblin.com
 

Revised 2.2x MOIC on 200 entry equity represents a revised 440 exit equity value, which implies 60 debt remains at exit. 60 debt remaining at exit implies 60 less LFCF was generated cumulatively, and allocating uniformly as instructed, 20 less LFCF was generated in each year. This 20 represents a post-tax impact of understating SG&A, so we must remove to solve for 20/0.5 = 40 SG&A was understated each year.

 

Illo voluptatem in enim laudantium asperiores doloremque. Ullam at ea maxime aut ut. Omnis reprehenderit incidunt est quidem ut quidem nihil. Dolorem consequatur cumque esse qui dolorem. Perferendis rerum animi ratione nisi et vel. Omnis qui est eos aut ut.

Quis ad dicta dolorem laudantium libero nesciunt. Consequatur et ipsa est necessitatibus quis at. Inventore et ratione nam voluptates.

Amet aspernatur qui eaque officiis id. Sit dolor esse et aliquam et iusto. Eligendi ratione nobis alias ut odit est dolores. Rem quas quisquam similique.

Accusantium consequatur laudantium molestiae pariatur perferendis. Officiis consequatur temporibus dolorem eligendi et at earum. Expedita eos doloremque iure. Porro itaque voluptas hic ipsam quia. Exercitationem aspernatur pariatur praesentium ut sed rerum nesciunt est.

Career Advancement Opportunities

November 2026 Investment Banking

  • Evercore 01 99.5%
  • Moelis & Company 01 99.0%
  • JPMorgan 01 98.4%
  • Guggenheim Partners 02 97.9%
  • Morgan Stanley 06 97.4%

Overall Employee Satisfaction

November 2026 Investment Banking

  • Moelis & Company No 99.5%
  • Morgan Stanley 02 99.0%
  • Evercore 01 98.4%
  • Banco Santander 02 97.9%
  • BMO Capital Markets 13 97.4%

Professional Growth Opportunities

November 2026 Investment Banking

  • Evercore 01 99.5%
  • Moelis & Company 01 99.0%
  • Morgan Stanley 05 98.4%
  • Goldman Sachs 01 97.9%
  • JPMorgan No 97.4%

Total Avg Compensation

November 2026 Investment Banking

  • Vice President (16) $429
  • Associates (57) $264
  • 3rd+ Year Analyst (8) $210
  • 2nd Year Analyst (29) $183
  • Intern/Summer Associate (16) $161
  • 1st Year Analyst (84) $151
  • Intern/Summer Analyst (76) $101
notes
16 IB Interviews Notes

“... there’s no excuse to not take advantage of the resources out there available to you. Best value for your $ are the...”

Leaderboard

success
From 10 rejections to 1 dream investment banking internship

“... I believe it was the single biggest reason why I ended up with an offer...”