What is the difference between MBB and Big 4 consulting?

MBB (McKinsey, BCG, Bain) are pure strategy consulting firms. Big 4 (Deloitte, EY, PwC, KPMG) offer consulting alongside audit, tax, and advisory services. MBB is more competitive, more strategy-focused, and generally higher paid. Big 4 consulting offers broader exposure and is slightly less competitive to enter.

Do I need to know case interview frameworks for a spring programme?

Not formally, but a basic understanding helps. Knowing how to structure a profitability question or a market sizing question will make you stand out during workshops.

How competitive are MBB spring programmes?

Very. McKinsey and BCG spring programmes have acceptance rates of 2–5%. Apply early, ensure your CV is strong, and prepare for the online tests.

Updated March 2026

Complete Guide to Consulting Spring Programme Applications 2027

Everything a first year student needs to know about consulting spring programmes — what they are, the application process, case interviews and how spring programmes lead to summer internships at McKinsey, BCG, Bain and others.

Used by students applying to McKinsey, BCG, Bain and 20+ other consulting firms

In this guide

1What a consulting spring programme is
2The 2027 consulting spring programme timeline
3The application
4Free CV checkerFREE TOOL
5Online tests
6Free psychometric practiceFREE TOOL
7The case interview — the defining feature of consulting recruitment
8Free HireVue practiceFREE TOOL
9What happens during the spring programme
10Firms and deadlines
11Frequently asked questions

Section 1

What a consulting spring programme is

A consulting spring programme (sometimes called a spring insight, discovery programme, or early careers programme) is a 1–5 day paid placement at a consulting firm aimed at first year undergraduates. It gives you an introduction to consulting, the firm's culture, and the problem-solving approach that defines the industry.

During the programme you will typically attend presentations, work on a mini case study with other participants, shadow consultants, and network with associates and partners. At McKinsey, BCG and Bain, these programmes are highly structured and competitive — they are the primary pipeline for identifying future summer intern candidates.

The real value of a consulting spring programme is the fast-track it creates. At most top firms, strong spring programme participants are given priority access to summer internship applications — sometimes skipping early screening stages entirely. Some firms make direct summer offers to exceptional spring participants.

Competition varies by firm. McKinsey and BCG spring programmes are extremely competitive (acceptance rates of 2–5%). Firms like Deloitte, Accenture and PA Consulting run larger programmes with acceptance rates of 10–15%.

Who can apply

First year undergraduates

Duration

1–5 days

Pay

Paid at MBB; varies at other firms

When it happens

Easter or early summer 2027

Acceptance rate

2–5% at MBB, 10–15% at Big 4/other

Why it matters

Fast-track into summer internship applications

Section 2

The 2027 consulting spring programme timeline

Consulting spring programmes have earlier deadlines than many students expect. McKinsey and BCG typically close applications by November of first year.

September – October 2026·Research and firm events

Attend consulting firm presentations at your university. Join the consulting or strategy society. Start reading about case interviews and the consulting lifestyle.

October – November 2026·Applications open and close

McKinsey, BCG and Bain open and close spring programme applications quickly — often within a 4–6 week window. Apply as soon as they open. Deloitte and Big 4 firms may have slightly later deadlines.

November – January 2027·Online tests and interviews

Online problem-solving tests (McKinsey uses their own Solve assessment; BCG uses a case-based online test). Some firms conduct a brief phone or video interview.

January – February 2027·Offers

Spring programme offers confirmed.

Easter or June 2027·Spring programme takes place

Case study workshops, team presentations, networking with consultants, and an introduction to the consulting toolkit.

Section 3

How to apply for a consulting spring programme

Your CV

Consulting firms look for academic excellence, leadership, and structured thinking:

Academic record: top consulting firms screen heavily on grades. A strong predicted grade (first or high 2:1) and excellent A-Levels are important at MBB.

Leadership evidence: society president, sports captain, event organiser, any role where you drove outcomes through others.

Structured thinking: maths, economics, engineering, or science backgrounds signal analytical ability. If your degree is in humanities, compensate with quantitative extracurriculars.

Concise, clean formatting. One page. Every bullet point should demonstrate impact.

Cover letter

Consulting cover letters should demonstrate three things:

Why consulting? Show you understand the problem-solving, client-facing nature of the work. Reference specific types of projects that interest you.

Why this firm? Differentiate between MBB firms (their approaches genuinely differ). Reference specific practice areas, industries, or values.

Why you? Evidence of leadership, analytical capability, and the ability to work in teams under pressure.

Application questions

Common consulting application questions:

Problem solving: "Tell us about a time you solved a complex problem." — The answer should show structured, logical thinking.

Leadership: "Describe a time you influenced others to achieve a shared goal." — Consulting is fundamentally about influencing clients without formal authority.

Curiosity: "What business issue are you most interested in right now?" — Show commercial awareness and genuine intellectual curiosity.

Section 4FREE TOOL

Check your CV before you apply

Consulting firms screen CVs for academic excellence, leadership evidence, and structured communication. Check yours below.

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Section 5

The online tests — McKinsey Solve, BCG case tests and more

Consulting online assessments are different from banking ones. They test problem-solving ability rather than speed on standard psychometric questions.

McKinsey Solve (Imbellus)

60–70 minutes

Providers: McKinsey proprietary

A game-based ecosystem simulation that tests your ability to make data-driven decisions. You manage a virtual ecosystem by analysing species data, food chains, and environmental factors. There is no way to "study" for this — but doing it once removes the novelty.

BCG Online Case

45–60 minutes

Providers: BCG proprietary

A digital case study where you analyse data, build charts, and answer strategic questions. Tests the same skills as a live case interview but in a written format.

SHL / numerical + verbal

20–40 minutes

Providers: SHL

Used by Big 4 and non-MBB consulting firms. Standard numerical and verbal reasoning format.

Preparation tips

For McKinsey Solve: the game is easier when you approach it systematically. Take time to understand the data before making decisions.

For BCG Online Case: practise case interview frameworks. The online version tests the same analytical skills.

If applying to Big 4 firms, practise standard SHL numerical and verbal tests.

Section 6FREE TOOL

Practice a psychometric test

Consulting online tests are different from banking psychometrics — they test problem-solving and strategic thinking rather than speed. Familiarise yourself with the general format below before facing the real thing.

Psychometric Tests

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Section 7

The case interview — the defining feature of consulting recruitment

The case interview is what makes consulting recruitment fundamentally different from banking or law. In a case interview, you are given a business problem — "Our client's profits have declined by 20%. What should they do?" — and asked to solve it live, out loud, with the interviewer.

This is not a test of business knowledge. It is a test of structured thinking, communication, and composure. You are expected to break the problem into components, ask clarifying questions, analyse data when provided, and arrive at a recommendation — all while thinking out loud.

At MBB firms, you will face 2–4 case interviews during the recruitment process. Each lasts 30–40 minutes. The interviewer is assessing your problem-structuring ability, your analytical rigour, your communication clarity, and your ability to synthesise findings into a clear recommendation.

Common question types

Profitability

"Our client, a UK retailer, has seen profits decline by 15% over the past two years. Why, and what should they do?" — Start by separating revenue and cost. Then dig into each.

Market entry

"Should our client, a European bank, enter the Indian market?" — Structure around market attractiveness, competitive landscape, client capability, and potential entry modes.

Market sizing

"How many coffee cups are sold in London per day?" — Break it into components: population, working population, coffee drinkers, cups per person per day. Show your working.

Fit / PEI

Personal Experience Interview (at McKinsey): "Tell me about a time you led a team through a difficult situation." — The structure is similar to banking competency questions but with deeper probing.

How firms score your answers

Problem structuring — Can you break a complex problem into logical components?

Analytical rigour — Can you work with data, make calculations, and draw accurate conclusions?

Communication — Can you think out loud clearly? Do you explain your reasoning as you go?

Creativity — Can you generate hypotheses and consider non-obvious angles?

Synthesis — Can you pull your findings together into a clear recommendation?

Section 8FREE TOOL

Practice a HireVue question

While case interviews are the main assessment, many consulting firms also use video interviews for initial screening. Practising on camera builds the communication and structuring skills that transfer directly to live case interviews.

HireVue Practice

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Your question

30s preparation 2 min recording Camera + mic

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Section 9

What happens during the spring programme

Consulting spring programmes are shorter than banking spring weeks but packed with content:

Case workshop

2–3 hours

A structured workshop teaching you how to approach business problems. You will work through a case study as a group, guided by a consultant. This is both educational and evaluative.

Team presentation

2–4 hours

Work with other participants on a business challenge and present your recommendations. Assessors evaluate your analytical contribution, team skills, and presentation quality.

Networking

Throughout

Informal sessions with associates, engagement managers, and partners. Ask about their project experience, the firm's culture, and what they look for in candidates.

How to stand out during the week

Prepare basic case interview frameworks before the programme. Even a surface-level understanding of profitability trees and market sizing approaches will help during workshops.

Ask thoughtful questions that show commercial curiosity. "What is the most interesting project you have worked on recently?" opens good conversations.

Be collaborative during group exercises. Consulting is a team sport — the best candidates build on others' ideas rather than pushing their own.

Section 10

Spring programme deadlines by firm

Consulting spring programme windows are short — often just 4–6 weeks from open to close.

Firm	Programme	Opens
McKinsey	Spring Programme	October 2026	Get alerted
BCG	Spring Insight	October 2026	Get alerted
Bain	Spring Insight	November 2026	Get alerted
Deloitte	Spring Into Consulting	October 2026	Get alerted
EY	Spring Programme	November 2026	Get alerted
KPMG	Launch Pad	November 2026	Get alerted
Oliver Wyman	Discovery Programme	November 2026	Get alerted
Accenture	Spring Insight	December 2026	Get alerted

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