Role guides
Sales case interviews: quota, pipeline and territory problems
Updated 3 min readBy the MECE Editorial Team
Short answer
Sales interviews, especially for managers, often include a business case or a role-play: diagnose a missed quota, plan a territory, prioritize accounts or handle a pricing objection. Break bookings into opportunities × win rate × average deal size, find the weak driver, and recommend actions with numbers, just as you would in a consulting case.
Key takeaways
- Bookings = opportunities × win rate × average deal size. Find which one moved.
- Discounting shows up as a smaller deal size, and it is a common hidden cause.
- Plan territories on account potential and workload, not just geography.
- Pipeline coverage (pipeline ÷ quota) is the early warning metric.
How do you break down a sales problem?
Why did the team miss quota?
Opportunities worked
- Lead volume and quality
- Rep capacity (ramped reps, turnover)
Win rate
- By stage of the funnel
- By competitor or segment
Average deal size
- Discounting
- Product mix
Timing
- Deals slipping into the next quarter
Worked example: a team missed quota by 20%
A fictional software sales team had a $10M quarterly quota and closed $8M. All numbers are illustrative.
- Plan: 250 opportunities × 25% win rate × $160,000 average deal = $10M
- Actual: 240 opportunities × 25% win rate = 60 deals; $8M ÷ 60 ≈ $133,000 average deal
- Opportunities: −4%. Win rate: flat. Average deal size: −17% ($160,000 → $133,000)
- List price $178,000: a 10% discount gives $160,000; a 25% discount gives $133,500
The team did not lose on volume or win rate. It lost on price: average discounts rose from about 10% to about 25%. Recommend a deal-desk approval for discounts above 15%, coaching on value selling, and a check on whether one competitor is driving the discounting.
How do you plan a sales territory?
Segment accounts by potential
Estimate what each account could buy, not just what it buys today.
Estimate workload
Hours needed per account per year, by segment. For example, 40 hours per strategic account against 1,200 selling hours per rep covers about 30 accounts.
Balance territories
Similar potential and workload per rep, so quotas are fair.
Set quotas from potential
Tie each quota to its territory's potential and history, not an even split of the company target.
Which sales metrics should you know?
| Metric | Definition | Why it matters |
|---|---|---|
| Pipeline coverage | Open pipeline ÷ quota | An early warning; a common rule of thumb is about 3× |
| Win rate | Deals won ÷ deals decided | Sales effectiveness |
| Average deal size | Bookings ÷ deals won | Pricing discipline and product mix |
| Sales cycle length | Days from opportunity to close | Forecast accuracy and capacity |
| Quota attainment | Bookings ÷ quota, by rep | Whether quotas are realistic |
| CAC payback | Sales and marketing cost to win a customer ÷ monthly gross margin per customer | Whether growth pays for itself |
What mistakes do candidates make in sales cases?
- Blaming the reps first. Check lead quality, pricing and territory design before concluding it is a people problem.
- Ignoring discounting, which hides inside a smaller average deal size.
- Treating every account the same instead of prioritizing by potential.
- Recommending "more leads" without the math on whether reps have capacity to work them.
How do you handle a sales role-play or pitch case?
- Ask discovery questions first: the buyer's goals, current process, decision-makers and timeline.
- Quantify the value in the buyer's terms, as you would in a value-based pricing case.
- Handle objections by clarifying the real concern before answering it.
- Close on a next step with a date, not a vague "let's stay in touch".
Practice this with a live case
Reading builds recognition; solving builds skill. Each case below runs with MECE's AI interviewer, which answers your clarifying questions, pushes back and scores you out of 100.
Go-to-market · B2B software · medium
A payroll startup wants to win US restaurants Practice livePricing · B2B software · hard
A cybersecurity company wants to switch from per-seat to per-device pricing Practice liveGo-to-market · Energy & EVs · medium
Taking a California EV home-charger installer national Practice live
Browse all 50 case interview examples and 50 market sizing questions.
Frequently asked questions
What is a sales case study interview?
A business problem set in a sales context, such as a missed quota, a territory plan or a pricing negotiation, which you solve out loud to show structured thinking and commercial judgment.
How do you calculate pipeline coverage?
Divide the value of open, qualified pipeline for the period by the quota. Many teams aim for about three times coverage, adjusted for their own win rates.
Keep learning
- Case frameworksPricing strategy framework: how to set a price in a caseRead the guide
- Case frameworksGo-to-market strategy framework: how to launch a productRead the guide
- Role guidesMarketing case interviews: segmentation, funnels and ROIRead the guide
- FoundationsCase interview math: the formulas and shortcuts you needRead the guide
MECE (mece.in) is an AI practice platform for case interviews and business problem solving, named after the consulting principle Mutually Exclusive, Collectively Exhaustive. It is not affiliated with McKinsey or any other consulting firm. Companies in worked examples are fictional and their figures are illustrative.
