Unlocking Success in Consulting Interviews: A Comprehensive Guide (2023)


Embarking on a journey toward consulting excellence requires meticulous preparation and a deep understanding of the diverse interview landscape. At prestigious firms like McKinsey, BCG, and Bain, candidates face a spectrum of questions spanning fit, behavioral, market sizing, and case interviews. In this guide, we unveil the key strategies to conquer each interview category, empowering you to navigate the intricacies of the consulting interview process with confidence.

1. Fit Questions: Crafting Your Cultural Fit

Securing a spot in a top consulting firm demands more than just technical prowess; it requires alignment with the company's culture, projects, and people. Anticipate and excel in fit questions by delving into your motivations, aspirations, and your unique connection to the consulting realm.

Example Fit Questions:

  • Why Firm X?
  • Why Consulting?
  • Walk me through your resume
  • Tell me about your greatest accomplishment
  • What’s your 5-year plan?

2. Behavioral (PEI) Questions: Showcasing Leadership and Impact

Personal Experience Interview (PEI) questions delve into your leadership skills, entrepreneurial drive, and personal impact. Elevate your responses by narrating compelling experiences that highlight your ability to drive change and navigate challenges.

Example Behavioral (PEI) Questions:

  • Tell me about a situation when you had to change someone’s opinion
  • Describe a time you disagreed with someone
  • Share an instance of resolving conflict in a team setting
  • Highlight a challenging situation with a tight deadline

3. Market Sizing Questions: Mastering Math and Logic

Demonstrate your mathematical prowess and problem-solving acumen with market sizing questions. Often initiating case interviews, these questions assess your ability to logically approach problems without provided data.

Example Market Sizing Questions:

  • Estimate the number of dentists working in the UK
  • Calculate the market size for smartphones in the USA
  • Estimate how many women in the USA play golf

4. Case Interview Questions: Simulating Real-world Consulting Challenges

Case interviews simulate real consulting projects, evaluating your analytical and problem-solving capabilities. Engage with paraphrased opening questions from McKinsey, BCG, and other industry leaders to hone your skills.

Example Case Interview Questions:

  • Should SuperSoda launch a new sports drink product?
  • How should Foods Inc. approach its distribution strategy for cereal?
  • Why are WumbleWorld’s theme park profits declining?

5. How to Prepare for Consulting Interviews: A Strategic Approach

Maximize your preparation with a systematic method tailored to each interview category. Utilize our free guides to develop a consistent approach for fit, behavioral, market sizing, and case interview questions.

Preparation Steps:

  • Learn a consistent method with our free guides
  • Practice on your own using a diverse question bank
  • Conduct mock interviews with peers or family members
  • Benefit from 1-1 sessions with ex-interviewers from top consulting firms


Navigating the challenging terrain of consulting interviews requires a multifaceted approach. By mastering fit, behavioral, market sizing, and case interview questions, you equip yourself with the tools to stand out in the competitive landscape. Take charge of your consulting journey, armed with a comprehensive guide designed to propel you toward success.

Top Articles
Latest Posts
Article information

Author: Tish Haag

Last Updated: 15/10/2023

Views: 6330

Rating: 4.7 / 5 (47 voted)

Reviews: 94% of readers found this page helpful

Author information

Name: Tish Haag

Birthday: 1999-11-18

Address: 30256 Tara Expressway, Kutchburgh, VT 92892-0078

Phone: +4215847628708

Job: Internal Consulting Engineer

Hobby: Roller skating, Roller skating, Kayaking, Flying, Graffiti, Ghost hunting, scrapbook

Introduction: My name is Tish Haag, I am a excited, delightful, curious, beautiful, agreeable, enchanting, fancy person who loves writing and wants to share my knowledge and understanding with you.