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New product launch case interview, launch it or not, worked

A new product launch case asks whether a company should launch a product and how. Check the market, the customer and how the product fits next to what the company already sells, then work out the volume and market share needed to break even after lost sales of existing products. Recommend launch, pilot or stop, with the plan and the number to watch. Soreno, an AI voice interview practice app for consulting, investment banking and other finance candidates, runs a free growth strategy case with no sign-up, where a product launch is one of the options you rank, and full mock cases with scored feedback.

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The question
Launch, pilot or stop
And if launch, how
The math
Break-even share
Fixed costs over unit margin, then over market size
Often missed
Cannibalization
Lost sales of the client's own products
Worked case
8.3% share, or 3.3% with a packer
Invented coffee pods, every number shown

How do you structure a new product launch case?

A launch case is a yes or no with a plan attached. The structure below covers five areas in the order the decision needs them. Firms publish launch cases of their own: McKinsey's Electro-Light asks about a lower-sugar sports drink, and ZS's practice case 3 asks about a new sunscreen formula. Both move from factors to customers to the numbers.

Market

Big enough and growing?

Size
Units and dollars a year
Rivals
Who leads, how they'd react

Customer and product

Who buys it, and why over the rest?

Fit
A need the range doesn't meet
Overlap
Who would switch from the client's own

Economics

Volume and share to break even.

Margin
Per unit, net of cannibalization
Share
Break-even volume ÷ market

Launch plan

How to get it made and sold.

Supply
Build, or contract out first
Proof
A pilot with a target
Worked example: Copperline Coffee (ours)6 steps

Copperline Coffee, an invented brand, sells ground coffee in bags and holds 9% of that market. It has developed compostable coffee pods. Should it launch them, and if so, how? This case and every number in it are invented by Soreno for practice.

  1. Unit margin

    $2.40 a box, 40%

    A box of 10 pods sells to retailers at $6.00 and costs $3.60 to make on Copperline's own line, so each box earns $2.40.

  2. Fixed costs

    $8 million a year to cover

    The launch needs a $9 million production line and $6 million of launch marketing, $15 million upfront. Spread over a 3-year payback that is $5 million a year, plus $3 million a year to run the line: $8 million a year in all.

  3. Break-even

    3.33 million boxes, 5.6% of the market

    $8 million ÷ $2.40 = 3.33 million boxes a year. The US compostable pod market is 60 million boxes a year, so Copperline needs 5.6% of it.

  4. Cannibalization

    8.3% once lost bag sales count

    Some pod buyers would otherwise have bought Copperline's bags: 0.25 bags lost for every box sold, at $3.20 of margin a bag, or $0.80 a box. Net margin falls to $1.60, so break-even rises to 5 million boxes, 8.3% of the market. That is close to the 9% Copperline holds in bags, a share it took years to build.

  5. Supply choice

    Contract out until volume is proven

    A contract packer makes a box for $4.20, $0.60 more than the own line, with no line to build or run. The line only pays off above 30 million boxes over 3 years ($9 million plus 3 years of running cost, divided by $0.60), about 10 million a year or 16.7% of the market. Below that, the packer is cheaper. With no line, only $2 million a year of marketing is left to cover at $1.00 a box after cannibalization, so break-even drops to 2 million boxes, 3.3% of the market.

  6. Recommend

    Pilot first, build later

    Launch in a 6-month pilot with a contract packer: 1.5 million boxes in two regions, earning $1.00 a box after cannibalization, or $1.5 million before marketing. Go national with the packer if at least 35% of pilot buyers buy again and the run rate points above 3.3% share. Build the line only once volume heads past 16.7%. The main risk: the pod leader cuts its price during the pilot.

The five areas, with the questions to ask5 areas

  1. Market

    Size, growth, who leads

    How big is the category in units and dollars, how fast is it growing, and who holds the share? A shrinking category needs a stronger reason to enter.

    Market sizing, worked

  2. Customer

    Which segment, which need

    Who would buy it, what they use now, and what would make them switch. Pick one segment to win first.

  3. Product

    Fit with the range

    What it does better than rivals, and how much it overlaps with what the client already sells. Notre Dame's 2026 Case Book warns that new product launches can erode existing sales. ZS's sunscreen case, where the client already sells a best-selling product, asks which customer segments to recommend for the new formula.

  4. Economics

    Break-even and payback

    Notre Dame's 2026 Case Book gives break-even volume as fixed costs divided by price minus variable cost per unit. Divide that by the market to get the share needed, and subtract lost sales of existing products from the margin first.

    Break-even analysis examples

  5. Launch

    Supply, channel, price, timing

    Can the client make it, and should it build or contract out first? Which channel and price? A pilot with a clear target is often the best first step.

What firms publish on launch casesOfficial pages

Firm and school pages give practice cases, formulas and general sample frameworks. The five-area structure on this page is ours.

  1. McKinsey

    Electro-Light: what share to break even?

    McKinsey lists Electro-Light among the practice cases on its interviewing page. The case gives a $2.00 price to retailers, a $1.90 cost per bottle and $40 million of fixed costs, and asks what share of the electrolyte drink market it needs to break even. By our math, that is $0.10 a bottle, or 400 million bottles to cover the fixed costs. A later question names a 12.5 percent target share and asks what it would take. Calculators are not allowed.

  2. ZS

    A second sunscreen

    ZS's practice case 3 is about a consumer goods company planning to launch a new sunscreen formula. It asks which factors to consider, which segments to target, what profit to expect and which marketing and sales channels to use.

  3. Accenture

    Break-even in three steps

    Accenture's case workbook sets out the break-even in three steps (margin per unit, fixed costs, divide), then asks for the market size and the share needed, and whether the client can realistically reach it.

From McKinsey: Electro-Light practice case, McKinsey: Interviewing, ZS: Practice case 3, Accenture: Case Interview Workbook (PDF) and University of Notre Dame: 2026 Case Book (PDF).

What do interviewers listen for in a launch case?

In our experience, candidates lose launch cases on the numbers, not the ideas. These are the moves we listen for.

  • A goal for the launch

    Profit, share, defending against a rival or reaching new customers. Ask the goal, the timeline and the budget before you structure. The goal decides what counts as success.

  • Cannibalization in the math

    Ask how many buyers would have bought the client's existing product, and take that margin off before computing break-even.

  • Share, not just units

    Turn break-even volume into a share of the market and compare it with shares the client or rivals already hold.

  • Can it be made and delivered

    Capacity, a new line or a partner, and the time it takes. A product nobody can make on time has no launch date.

  • Launch, pilot or stop

    End with one of the three, the plan, and the number that would change your mind.

7 practice questions on launching a product

Each one asks whether to launch and how. Under each is what a strong answer does.

Launch or not

One product, one decision.

  1. A consumer goods company is deciding whether to launch a premium pet food line. How would you structure the decision?

    Sizes the premium segment, checks how many buyers would come from the client's own standard line, and finds the share needed to break even. Practice it, see a model answer

  2. A beverage company wants to launch a lower-sugar sports drink. What market share does it need to break even?

    Computes margin per bottle, divides fixed costs by it, turns the volume into a share and compares it with the current leaders.

  3. A carmaker is launching an electric pickup that may take sales from its own gas pickup. How would you account for that?

    Estimates how many buyers switch from the gas model, takes the lost margin off each electric sale and reruns the break-even.

  4. A coffee chain is opening a new store. How many cups a day does it need to sell to break even?

    Separates the one-time opening cost from yearly fixed costs, divides by margin per cup and converts the result to cups a day. Practice it, see a model answer

How to launch

The yes is close. Price and supply are the questions.

  1. A pharmaceutical company is about to launch a new drug. How would you set the price?

    Anchors on the value to patients and payers, checks rival treatments and the cost floor, then tests how volume changes with price. Practice it, see a model answer

  2. A software company is launching a new analytics add-on for its existing customers. How would you set the price?

    Prices from the value to each customer segment, and checks how many existing customers would buy at each price. Practice it, see a model answer

  3. A manufacturer is deciding whether to build a second factory. How would you evaluate the investment?

    Checks that demand will fill it, compares building with contracting out, and works out payback or NPV on the cash flows. Practice it, see a model answer

Common mistakes in new product launch cases

These are the ones we hear most in practice cases.

  • Leaving out cannibalization

    In our worked case it raises the share needed from 5.6% to 8.3%. Ignore it and a weak launch looks safe.

  • Mixing one-time and yearly costs

    A production line is paid once, running it is paid every year. Say how you spread the one-time cost before dividing.

  • Stopping at break-even volume

    5 million boxes means nothing until you compare it with a market of 60 million boxes and the share rivals hold.

  • A marketing checklist instead of a decision

    Product, price, place and promotion can fill the time without ever saying launch or not. Use them after the yes.

  • Assuming the client can make it

    Ask about capacity and suppliers. A contract packer or partner can test the market before the client builds anything.

  • Ignoring how rivals respond

    A leader with a large share can cut prices or copy the feature. Say what happens to your break-even if it does.

Decide the launch out loud

Soreno's AI interviewer runs a full case, gives you the cost and market data when you ask, checks your break-even and scores the session. Start your free week.

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Questions people ask

What is a new product launch case interview?

A case where a company has a new product and wants to know whether to launch it and how. You look at the market, the customer, how the product fits the range, the economics and the plan.

What framework should I use for a product launch case?

Market, customer, product, economics and launch plan, in that order, with break-even share as the number that ties them together. Build it around the client's goal rather than reciting a memorized list.

How do you calculate break-even in a product launch case?

Divide fixed costs by margin per unit to get break-even volume, then divide by the size of the market to get the share needed. Spread one-time costs over a payback period you state out loud.

What is cannibalization in a case interview?

Sales of the new product that come at the expense of the client's existing products. Take the margin lost on those sales off the new product's margin before you compute break-even.

How is a product launch case different from a market entry case?

A launch case puts a new product into a market, often one the client already serves. A market entry case takes existing products into a new market, such as a new country. The math is similar, but cannibalization matters more in a launch.

What is McKinsey's Electro-Light case?

A practice case on McKinsey's interviewing page about launching a lower-sugar sports drink. It asks for key launch factors, then the market share needed to break even from a $2 price, a $1.90 unit cost and $40 million of fixed costs.

Should I recommend a pilot in a launch case?

When the break-even share is close to what the client has achieved elsewhere, or when a big investment hangs on unproven demand. Say what the pilot must show and what you would do if it misses.

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