Deloitte runs candidate-led case interviews, meaning you control the direction, pace, and depth of analysis from opening question to final recommendation. This is the same format used by BCG and Bain — but distinct from McKinsey’s interviewer-led approach. Based on our analysis of hundreds of Deloitte candidate experiences, the biggest preparation gap isn’t case knowledge — it’s understanding how to drive a 35-minute case when no one is steering for you.
Candidate-Led vs. Interviewer-Led: Why It Matters
A candidate-led case interview is one where the interviewer presents a business problem and then hands control to you. You decide which areas to explore, what data to request, and when to pivot. The interviewer provides information only when you ask the right questions.
| Dimension | Deloitte (Candidate-Led) | McKinsey (Interviewer-Led) |
|---|---|---|
| Who drives the case | You choose the analysis path | Interviewer directs each section |
| Information flow | You request specific data | Interviewer provides data at set points |
| Structure ownership | Your framework guides the entire case | Your framework is acknowledged, then interviewer re-routes |
| Math difficulty | Moderate, 1-2 calculations | Higher, 2-3 layered calculations |
| Recovery from mistakes | You can self-correct and redirect | Interviewer may redirect you |
| Key skill tested | Self-direction and prioritization | Execution within defined scope |
This format rewards candidates who can think several steps ahead. In our experience working with Deloitte candidates, the most common failure mode is not a wrong answer — it’s losing momentum mid-case because you don’t know where to go next.
Anatomy of a Deloitte Case: Minute by Minute
A standard Deloitte case interview lasts 45-60 minutes total: roughly 35-40 minutes of case discussion, followed by 5-10 minutes of behavioral follow-up and 10-15 minutes for your questions. Here is how the case portion typically unfolds:
flowchart TD
A["Opening Prompt\n(2 min)"] --> B["Clarifying Questions\n(2-3 min)"]
B --> C["Present Your Structure\n(3-4 min)"]
C --> D["Drive Analysis — Branch 1\n(8-10 min)"]
D --> E["Quantitative Exercise\n(5-7 min)"]
E --> F["Drive Analysis — Branch 2\n(5-8 min)"]
F --> G["Synthesis & Recommendation\n(3-4 min)"]
style A fill:#0076A8,color:#fff
style G fill:#0076A8,color:#fff
Opening Prompt (2 minutes): The interviewer describes the client situation in 3-5 sentences. You’ll hear a disguised client name, the industry, and a broad business question like “Our client’s profits have declined 15% over two years. What should they do?”
Clarifying Questions (2-3 minutes): Confirm the objective, ask about scope (geography, time horizon, specific business units), and clarify unfamiliar terms. Strong candidates ask 2-4 targeted questions — not a laundry list.
Present Your Structure (3-4 minutes): Lay out your framework with 3-4 branches. Unlike McKinsey where the interviewer may redirect you, this framework is your roadmap for the entire case. State which branch you want to explore first and why — this signals your prioritization ability.
Drive Analysis (two phases, 13-18 minutes total): You explore your framework branches, requesting data as you go. The interviewer shares information — sometimes a data table, sometimes verbal facts. Based on our work with successful candidates, the best performers “close out” each branch with a mini-conclusion before moving to the next.
Quantitative Exercise (5-7 minutes): Expect one calculation — typically a profitability breakdown, market sizing estimate, or break-even analysis. Deloitte cases tend to have cleaner numbers than McKinsey, but you are expected to walk through your logic out loud.
Synthesis & Recommendation (3-4 minutes): Bring together your findings into a structured recommendation. Use the “I recommend X, for three reasons” format and reference specific data points from the case.
Common Case Types by Practice Area
The type of case you receive depends on which Deloitte practice you are targeting. Strategy & Operations (S&O) cases closely mirror MBB-style problems, while other practices lean toward their domain expertise.
| Practice Area | Primary Case Types | Format Notes |
|---|---|---|
| Strategy & Operations | Profitability, market entry, growth strategy | Full candidate-led; closest to MBB difficulty |
| Human Capital | Org design, workforce planning, change management | More qualitative; data often survey-based |
| Technology & Transformation | IT strategy, digital roadmap, system selection | Includes technical trade-off questions |
| M&A / Financial Advisory | Due diligence, valuation, synergy estimation | Heavier quantitative work; spreadsheet-style data |
For a deeper breakdown of how each practice area shapes the interview, see our Deloitte practice area guide.
The Group Case Discussion
Deloitte’s final round often includes a group case discussion — a format you will not encounter at McKinsey, BCG, or Bain. Four to six candidates receive identical case materials and collaborate on a recommendation over 30-45 minutes.
What evaluators look for is not who dominates the room. Based on our analysis of successful candidates, the scoring emphasis breaks down approximately like this:
| Evaluation Criteria | Approx. Weight | What It Looks Like |
|---|---|---|
| Contribution quality | 30% | Insightful points that advance the discussion |
| Active listening | 25% | Building on others’ ideas, referencing teammates’ points |
| Structure and logic | 20% | Organizing the group’s thinking, proposing frameworks |
| Communication clarity | 15% | Concise, confident delivery under time pressure |
| Collaboration | 10% | Inviting quieter members in, managing disagreements constructively |
The group case is explicitly not a competition. Multiple candidates from the same session regularly receive offers. The worst strategy is trying to “win” by talking the most or shooting down others’ ideas.
Five Strategies for the Candidate-Led Format
1. Practice driving, not just solving. In your mock sessions, have your practice partner stay silent after the prompt. The silence is the point — build the muscle of deciding where to go next without being prompted.
2. Build “closing” habits. After each branch of analysis, summarize what you learned and explicitly state your next move: “Revenue looks healthy at 8% growth, so let’s turn to the cost structure.” This prevents the drifting that kills candidate-led performances.
3. Prepare a versatile opening structure. Your initial framework at Deloitte is your roadmap for the entire case. Practice building MECE structures that flex across profitability, growth, and market entry scenarios without sounding formulaic.
4. Budget your time. With no interviewer to pace you, time management is entirely your responsibility. Set a mental checkpoint at the halfway mark — you should be starting your second area of analysis. Spending 15 minutes on a single branch is a common trap.
5. Rehearse the group format separately. The group case discussion tests completely different skills than the one-on-one case. Practice with 3-4 peers and focus specifically on listening and building on others’ ideas — not just presenting your own.
Key Takeaways
- Deloitte uses a candidate-led format where you control the analysis direction, unlike McKinsey’s interviewer-led approach
- A typical case runs 35-40 minutes with you driving from structure through recommendation — no one will steer for you
- Case types vary by practice — S&O cases are closest to MBB difficulty, while Human Capital and Technology cases incorporate domain-specific elements
- The group case discussion in final rounds evaluates collaboration and active listening more than individual brilliance — multiple candidates can receive offers from the same session
- Time management is the most overlooked skill; practice self-pacing so you don’t spend 15 minutes on one branch
- Build “closing” habits between analysis branches to maintain structure and forward momentum throughout the case
Ready to practice Deloitte-style candidate-led cases? Browse Deloitte cases in our case library, or sharpen your skills with our AI Mock Interview — it simulates the candidate-led format where you drive the analysis from start to finish.