Bain & Company · Primly Community

Went through Bain final rounds last fall. Here's what the written case is actually like.

sre_sol · 5 replies

I know there's a lot of vague advice floating around about the Bain written case. Let me be specific about what I experienced.

You get a packet. Mine was 14 pages: a letter from a fictional CEO, revenue and margin data by segment, some market share charts, and a short exhibit showing customer survey results. The prompt asked me to diagnose why profit margins had compressed and recommend the two highest-priority actions.

30 minutes to read and prepare. Then a 10-minute presentation to two partners (no slides, you're just talking through your structure and recommendation), followed by 10-15 minutes of pretty tough Q&A.

The thing most people miss: they are absolutely not looking for a complete 80-slide BCG deck in your head. They want to see you identify the 2-3 most important issues from a noisy packet, commit to a recommendation, and defend it under pressure. I changed one part of my recommendation during Q&A when a partner showed me a chart I had underweighted. I think that helped rather than hurt me.

Timing is brutal. I did not finish reading the full packet before my 30 minutes ended. You have to triage. Read the prompt, skim the appendix exhibits, then build your structure. Don't try to absorb everything.

Feel free to ask specifics. Happy to share more.

5 replies

finance_faye

This is really useful. Did you have to do any quantitative analysis on the spot, or was it mostly qualitative synthesis? I'm worried about the math under pressure.

consultant_cam

Some math, yes, but it's simpler than you'd expect. I did a quick margin bridge calculation from two exhibits. Nothing requiring a calculator you'd actually need to pull out. They're testing whether you use numbers to support your argument, not whether you can model. If a chart shows margin dropped 4 points and you can explain which two cost lines drove it, that's the bar.

pm_priya

Interesting that you changed your recommendation mid-Q&A. Did that feel risky in the moment? I always assume pivoting makes you look inconsistent.

consultant_cam

It felt risky. But I think the key is HOW you change. I didn't say 'you're right, I was wrong.' I said 'the customer retention data in Exhibit 7 changes the weight I'd put on the loyalty investment. Given that, I'd move it from second priority to first.' That's updating on evidence, not caving to pressure. There's a real difference and I think they read it that way.

alex_design

One counter-point: the written case format has gotten a lot of press so everyone's prepped for it now. The PEI is where I'd actually spend my time. Partners at Bain go three or four levels deep on a single story. Most people run out of story by level two.