The McKinsey Personal Experience Interview (PEI): What Interviewers Actually Look For

Personal fit is an incredibly important part of the hiring process in consulting. Next to case interviews, it's the main criterion — and it's often overlooked. Most candidates spend 90% of their prep time on cases and treat the personal fit portion as an afterthought. That's a mistake, and we've seen it cost people offers.

We spent 6+ years each at McKinsey, and interviewed candidates as part of the process. We've sat through hundreds of personal fit answers — some brilliant, some painfully generic, and some that single-handedly turned a "hire" into a "no hire." In this post, we'll walk you through what personal fit actually is, what firms are looking for, how the assessment works, and how to build stories that crush the interview.

What Personal Fit Actually Is (and What It Isn't)

A consultant is hired to solve problems. But just as important as your problem-solving ability is the personal fit — the soft-skill component of your toolbox. You don't solve problems by yourself. You're always working in a team. You're working alongside client teams. And you have to get clients on your side, even if they're not happy about the project. In all of these interactions, your people skills are on display. Even a junior consultant will frequently have to handle delicate interpersonal situations.

That's why consulting firms want to make sure you're up to the task. That you get along well with your team, even if you're stuck in a small team room for 12 hours a day in week 6 of an intense project. That you can handle difficult clients with empathy and finesse. And that you can simply get things done.

That's what personal fit is.

Now, there's another interpretation of "personal fit" floating around online — the idea that certain candidates are a better "match" for certain firms. As if Bain looks for entrepreneurial types and McKinsey looks for structured thinkers and BCG wants creative rebels. Let us tell you right here: this is the wrong way to think about personal fit.

Yes, there may be differences in culture across firms. But they're often massively overstated. The firms compete for the same candidates, from the same schools, and the people you'll find across MBB don't have radically different personalities. All the firms look for the same core qualities. Here's a scenario that will never happen at an MBB firm: "Well, the candidate is a rockstar — highly analytical, great achievements, great people skills. But we're gonna turn him down because he's more the academic type, and we're all about the entrepreneurial type." That simply doesn't happen.

If you want to learn more about the cultural differences between McKinsey, BCG, Bain check out our article or our YouTube video.

So for you as a candidate, it means you need to highlight your strengths and match them to what consulting firms are looking for in general. Get that right, and you'll be successful in any hiring process.

The 7 Qualities Interviewers Are Looking For

This isn't an exhaustive or official list, but in all likelihood the recruiting directors of the major consulting firms would largely agree with it.

1. Leadership. Consulting is fast-paced and often ambiguous. You can't have people passively waiting to be told what to do. Firms want people who take charge. Sooner rather than later, you'll lead a team of juniors — sometimes even clients who aren't exactly thrilled about it. And often you won't have formal authority, so you can't just boss them around. It's about whether you can provide guidance and get people to follow.

2. Going the extra mile. Consulting can be exhausting. You don't just have to deliver, you have to overdeliver. The partner wants to impress the client and secure follow-up work. You can't be the person aiming for a 9-to-5; you need to be someone striving for extraordinary results. Clients don't pay for hard work per se — they pay for results. But often it takes hard work to get there.

3. Persuasiveness. Required at every level. A partner needs to convince a CEO to do the project. A junior consultant needs to convince the client's accountant to hand over the data for an analysis. Any idea a consultant proposes might require persuasion.

4. Empathy. A prerequisite for persuasiveness and many other qualities. It's the ability to understand another person's thoughts and feelings from their point of view, not yours. Clients aren't monolithic entities with a single priority — they're collections of people with different motivations, priorities, and agendas. A consultant needs fine-tuned antennas to navigate that.

5. Humility. Consultants, especially junior ones, sometimes develop a superiority complex. This is inappropriate. Yes, maybe the client's Excel skills aren't polished and the 50-year-old accountant doesn't have the steepest career trajectory. But with their intimate knowledge of the company, these are often the people who become super important in projects. The most well-liked and successful consultants are the humble and respectful ones.

6. Integrity. You'll be involved in sensitive matters — government contracts, confidential client data, interpersonal dynamics with team members and clients. Recent high-profile cases across the industry showcase what happens when standards aren't upheld. Dishonest behavior always comes back to bite the firm. An honest, upright consultant is a huge asset; a dishonest one is a liability.

7. Humor. At the end of the day, we're all human. In an environment with high pressure and long hours, a good sense of humor is invaluable. Whether it's to lighten the mood, get the creative juices flowing, or bond with the team — good-natured, witty people make the job infinitely easier. It's more highly valued than most candidates realize.

How Firms Actually Assess Personal Fit

Personal fit is assessed both officially and unofficially. On the official side, firms dedicate a full section of the interview to personal fit questions. On the unofficial side, your CV already gives a glimpse into your fit (achievements, leadership experiences), and how you interact with the interviewer throughout the entire interview matters too.

McKinsey, on one extreme, has a very stringent way of assessing personal fit within the dedicated interview slot. Smaller firms rely more on the unofficial, "vibe" component. We'll focus on the official part, because that's where you can make the biggest difference with dedicated preparation.

The Three Types of Questions

Classic HR questions. Tell us about yourself. What are your biggest strengths and weaknesses? Where do you see yourself in 5 years? You can prepare a canned 30-second or one-minute answer for each of these and practice them until you sound natural. They're more of a warm-up, but since they're also your first impression, you really don't want to mess them up.

The two most important HR questions are "Why consulting?" and "Why this firm?" These you need to nail.

For "Why consulting?" — you'll probably get away with generic answers like the steep learning curve and the inspiring colleagues. Just avoid talking about salary and exit opportunities. You don't want to give the impression that you're in it for the money, or that the firm is a stepping stone. A much stronger answer involves a personal experience: maybe you interacted with consultants during an internship, or attended a recruiting event that genuinely impressed you.

For "Why this firm?" — this is the trickier one. The firms are often not dramatically different, and it almost feels like you have to make something up based on what you read online. "Oh Bain, I'm so impressed by your Private Equity practice." Unless your prior experience screams PE, you can imagine this isn't the strongest answer — especially if five other candidates gave the same one that day. A better answer is connected to a genuine personal experience. That's why attending recruiting events and networking matters so much. Any brief, authentic talking point will be stronger than a rehearsed generic answer.

Behavioral questions. These go deeper: How do you deal with a difficult co-worker? How do you prioritize in a stressful environment? How do you handle setbacks? The best way to answer these is with concrete examples from your past — which effectively turns them into experience questions.

Experience questions (the most important type). These aren't even questions — they're prompts for you to share stories:

Tell me about a time when you had a challenging leadership situation.Tell me about a situation when you had to convince someone of your idea.Tell me about a time when you exceeded everyone's expectations.

You cannot answer these hypothetically. The only way to nail them is to come up with actual stories from your past where you exhibited whatever quality the prompt implies. The basic idea: the best predictor of future behavior is past behavior.

The most important thing here is to highlight your contribution. Not your team's, not your manager's — yours. You cannot keep saying "we did this, we did that, I was on a team that organized something." Having been in the room while other people did something amazing doesn't make you amazing. Don't tell them you were "part of a grand project." Tell them you were responsible for one of the key workstreams within that project, and how you overcame the critical obstacles that made it successful. Yes, it's a smaller battle — but you fought it.

The McKinsey Difference: One Question, Twenty Minutes

Among all the firms, McKinsey is the one where personal fit prep matters most. In the personal fit portion of a McKinsey interview, each interviewer asks you just one question. That means 20 minutes of an entire interview are dedicated to a single story.

So you need a story that can fill 10 minutes and still remain interesting and relevant. On top of that, expect the interviewer to interrupt you repeatedly with detailed follow-up questions. They'll dig into your thought process, your motivations, the specific actions you took, and whether the outcome was as rosy as you're making it sound.

This is why McKinsey PEI prep is fundamentally different from prepping for generic behavioral interviews. You can't survive on polished two-minute answers. You need stories with real depth — stories where you remember specific conversations, specific decisions, specific turning points. The interviewer will probe, and if the story is fabricated or embellished, they'll find the cracks.

How to Build Stories That Actually Work

First, think about what your stories should demonstrate. The seven qualities listed above are a good starting point. You can also check the McKinsey careers website, which explicitly lists the qualities your stories need to cover.

Then go through your past experience and identify your strongest moments. Ideally from work — an internship, a part-time job, a meaningful professional experience. Extracurricular activities like sports or charitable work can also work well. Student-life stories (the impossible group project, the last-minute thesis submission) are emergency backup only. These aren't high-stakes situations, and every candidate has one — don't expect any interviewer to get excited about it.

Match stories to qualities. One strong experience can cover multiple qualities. Your leadership story probably involved convincing someone of something, so it can double as a persuasiveness story if needed. This flexibility is key — depending on the exact questions you get, you can shift emphasis between stories without repeating yourself across multiple interviewers.

Structure your stories using STAR (or any framework):

Situation — brief description of the environment. Was it an internship? A prior job? Who were the key people? What was the major problem?

Task — what were you asked to do? What made it difficult? What were the complications?

Action — what did you do to resolve the situation? What were you thinking? What were your options? How did you decide? Who did you involve? Who did you have to convince?

Result — what was the outcome? Ideally with a tangible or measurable impact. By how much did you reduce costs? How many units were sold? Was it a complete success, or a partial one?

If you prepare your stories this way, you'll be able to crush personal fit interviews. A well-structured 2–3 minute story can concisely and convincingly explain why you'd make a great consultant, backed by evidence from your past.

And one last thought: the entire personal fit part is much easier if you have genuinely good stories in the first place. Your Olympic gold medal or the $100 million IPO of your startup will be well-received no matter how you structure them. But for the rest of us, a good framework ensures that all the important elements are there. Much like a Hollywood movie or an old Greek epic, a great PEI story has a narrative arc: an interesting setting, a conflict, a hero (that's you), a buildup, a boss fight, and a happy ending. If you can make the interviewer pull out the popcorn, you did well.

The Bottom Line

Personal fit is not an afterthought — it's half of the interview. If you walk in with polished case skills and weak personal fit stories, you're gambling with a coin flip. If you walk in with both, you're giving yourself the best possible chance.

The case interview side is where our Case Interview Mastery course on Udemy comes in. We walk you through 7 full McKinsey-style cases with detailed solutions, so you can focus your remaining prep time on building the PEI stories that will complete the picture. Taught by us — two former McKinsey interviewers who've seen both halves of the interview from the other side.

For a full overview of the end-to-end process, see our article on the recruting process as McKinsey, BCG, and Bain.

Related posts you might find useful:

• The Culture at McKinsey, BCG & Bain — Is There a Difference?

• Consulting Salary at McKinsey, BCG & Bain

• Work-Life Balance at McKinsey, BCG & Bain

  
  

Related video:Watch our YouTube video: Secrets of the Personal Fit Interview:

https://www.youtube.com/watch?v=RDSdJXg0Hh0