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Profit Margin Formula

Hey there,

How should I calculate profit margin % from Sales ($), Volume (#), COGS ($), SG,&A ($), Depreciation ($), and EBITDA ($). The formula= (Sales-COGS)/Sales is not providing the answer that is in the case study answer key. Can someone help with this please?

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Top answer
Hagen
Coach
on Feb 05, 2025
#1 recommended coach | >95% success rate | 8+ years consulting, 8+ years coaching and 7+ years interviewing experience

Hi there,

I would be happy to share my thoughts on your question:

  • First of all, there is no single "profit margin", but several different profit margins.
  • Moreover, therefore, I would highly advise you to read carefully what specific profit margin is being asked for.

You can find more on this topic here: How to succeed in the final interview round.

If you would like a more detailed discussion on how to best prepare for your upcoming pre-interview assessments and/or interviews, please don't hesitate to contact me directly.

Best,

Hagen

Alessa
Coach
on Feb 03, 2025
xMcKinsey & Company | xBCG | +200 individual & group coachings | feel free to schedule a 15 min intro call for free

Hey!

Profit margin can be calculated in different ways depending on which level of profitability you’re looking at. The basic formula you mentioned, (Sales - COGS) / Sales, gives you the Gross Margin. However, if the case study answer key shows a different number, it might be using Operating Margin or Net Margin, which account for SG&A, depreciation, or other costs. 

=> For Operating Margin: EBIT (EBITDA - Depreciation)/ Sales. 

=> For Net Margin (if taxes/interest are considered): Net Income/Sales

Double-check which margin the case study expects! ?

Alessa

on Feb 04, 2025
Ex-BCG Principal | 8+ years consulting experience in SEA | BCG top interviewer & top performer

It depends on the margin that's required (e.g. Gross vs Operating vs Net etc).

In addition to what Alessa has already mentioned - it could also be EBITDA margin which is EBITDA/Rev.

A well designed case question should have made which kind of margin clear, but if the question isn't clear, then maybe try the different options and see which one fits. 

Thabang
Coach
on Feb 08, 2025
Ex-McKinsey Consultant | McKinsey Top Coach & Interviewer | Special Offer: Buy 1 Session Get 1 Free (Limited time!)

Hey there,

Alessa is spot on. 

Sometimes definitions and formulas differ across cases. Therefore it's important to clarify and agree on the definition / approach you want to use with the interviewer. 

All the best

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