Use this guide to prepare for Account Delivery Head interviews, with a focus on commercial / p&l management. Explain your reasoning and connect it to experience you can substantiate.
These preparation themes come from the questions in this role’s bank. They help you organise your examples; individual employers may assess different things.
Commercial / P&L Management
A useful preparation sequence
Choose your experience level and the round you expect.
Answer one question in your own words before opening its guide.
Compare your reasoning, evidence and trade-offs; adapt the answer to your experience.
Practise the follow-up, then revisit one answer you want to improve.
Representative questions and answer guidance
Open any question to read its answer. The complete guidance is included on this page.
Technical · Fresher
1. Why can an account show revenue growth while profit and cash generation weaken?
Answer guide
Revenue, profit and cash move on different clocks. Additional delivery costs, pricing changes, recognition timing and collection delays can each affect them differently. For example, an account may win extra volume at a discounted rate, hire people to serve it, and then wait ninety days for payment, so revenue rises while profit and cash fall. I would reconcile the three views using agreed definitions, starting with the revenue bridge, then margin, then receivables. Revenue growth alone does not establish economic health. The limit is that timing differences can reverse later, so I would look at a few periods, not one month.
What this question explores
Whether you understand that revenue, profit and cash can diverge, and know how to reconcile them using agreed definitions rather than celebrating top-line growth.
Common mistakes
They treat rising revenue as proof the account is healthy without checking margin or collections.
They compare revenue, profit and cash figures built on different definitions and periods, then draw conclusions from the mismatch.
Practise a follow-up
Which of the three would you check first if cash is weak, and why?
How would you explain this divergence to a non-finance sponsor in two minutes?
2. How would you structure P&L accountability when sales, delivery and finance control different drivers?
Answer guide
I would define decision rights, shared measures and escalation routes for trade-offs across the three functions, for instance who can approve a discount or a staffing change. Evidence would be reconciled regularly in a joint review so everyone works from one set of numbers. One named owner needs practical influence and collaboration, not nominal responsibility for decisions others make invisibly, otherwise accountability is a label. I would give the P&L owner a veto or at least a formal say at the points that drive margin, such as pricing and scope. The limit is that no structure removes tension, so the cadence of joint review matters.
What this question explores
Whether you can give P&L ownership real influence by defining decision rights, shared measures and escalation across sales, delivery and finance.
Common mistakes
They name one P&L owner but leave pricing, staffing and cost decisions with others, so accountability is only nominal.
They split responsibility so evenly across functions that nobody can be held to account for the result.
Practise a follow-up
Which decisions would you want the P&L owner to control or veto, and why?
How would you resolve a standing disagreement between sales and delivery about pricing?
3. A fixed-price engagement's estimated total cost rises above expected revenue. What should the P&L owner do?
Answer guide
I would validate the remaining cost and the contractual assumptions first, so that the number is credible, then involve finance and commercial owners early. I would present corrective options such as scope clarification, a change request, resource changes or renegotiation, with their effects. Finance applies the relevant accounting treatment, such as a provision for a loss-making contract, and I would not decide that myself. Hiding the deterioration until completion delays legitimate decisions and usually makes the outcome worse. The limit is that estimates are uncertain, so I would present a range and the assumptions behind it.
What this question explores
Whether you surface a forecast loss early with a validated estimate and options, and involve finance for treatment instead of hiding it.
Common mistakes
They wait until project completion to disclose the loss, hoping that costs will recover.
They change the estimate to avoid a loss without evidence, then present it as the forecast.
Practise a follow-up
What recovery options would you put to the customer if the loss comes from scope growth?
How would you handle it if the sponsor refuses to renegotiate?
4. An engagement has revenue of 100 and defined delivery costs of 72. What is its delivery margin?
Answer guide
The contribution is revenue of 100 minus delivery costs of 72, which is 28, so the delivery margin is 28% of revenue. The important discipline is stating which costs are included, for example direct staff and subcontractors, and which are excluded, such as shared overhead and sales cost. This is a defined delivery-margin example, not necessarily the organization's gross or operating profit measure, so I would label it clearly in any report. Comparing it with another team's figure only makes sense if both use the same cost definition.
What this question explores
Whether you can calculate delivery margin correctly and are careful to state which costs are in and out, so the figure is not misread as total profit.
Common mistakes
They quote 28 percent as the company's profit without saying which costs were included in the 72.
They divide the contribution by cost instead of revenue and report a different percentage.
Practise a follow-up
How would the margin change if shared overhead of 10 were allocated to this engagement?
How would you compare this margin with another engagement that uses a different cost definition?
5. At revenue 100 and cost 80, a 10% price discount is proposed with unchanged cost. What happens to margin?
Answer guide
After a 10% discount, revenue becomes 90 and cost stays at 80, so contribution is 10 and margin is about 11.11%. Before the discount, contribution was 20 on 100, a 20% margin. A 10% price cut therefore halves the contribution. To keep the original contribution of 20 at a lower price, volume would need to double, assuming cost is fully variable. I would examine credible volume or cost benefits separately rather than assume a small price percentage has a small profit effect. The check is whether the customer's commitment is firm and cost really falls.
What this question explores
Whether you calculate the margin effect of a discount correctly and understand why a small price cut can remove a large share of profit.
Common mistakes
They assume a 10% discount reduces margin by about 10 percent, ignoring that cost stays fixed.
They accept the discount because of promised future volume with no evidence or commitment behind it.
Practise a follow-up
How much extra volume would be needed to recover the lost contribution?
What would you ask the customer to give in return for the discount?
6. A large account loses money despite repeated local cost reductions. What strategic options should be compared?
Answer guide
I would compare options such as repricing, narrowing scope, changing the operating model, renegotiating the contract, investing to fix the structure, or exiting, through the authorized owners. I would examine the customer's value to us, such as strategic reference, and our obligations, since exit has costs and notice terms. Local efficiency may be insufficient when the commercial structure itself is unsustainable, and repeated small cuts can damage service without changing the economics. I would present the options with the financial effect and risk of each and a recommendation. The limit is that every option has a cost, including the relationship, and I would say so plainly.
What this question explores
Whether you step back from repeated cost cuts and compare structural options such as repricing, renegotiation and exit, with the effect and risk of each.
Common mistakes
They keep cutting cost locally even after it is clear the commercial structure is unsustainable.
They jump to exit without assessing contractual obligations and the strategic value of the customer.
Practise a follow-up
What would make you recommend exiting the account instead of renegotiating?
How would you open a renegotiation with a customer who values the current price?
7. A service costs 80 and sells for 100. How do markup and margin differ?
Answer guide
Profit is 100 minus 80, which is 20. Markup divides that profit by cost, so 20 over 80 is 25%. Margin divides it by revenue, so 20 over 100 is 20%. They describe the same profit but use different denominators, and people often mix them up when setting targets. A team told to add a 20% markup will earn only about 16.7% margin, which can surprise a manager with a margin goal. I would always name the denominator before comparing targets or pricing across teams.
What this question explores
Whether you can calculate markup and margin correctly, explain why they differ through the denominator, and avoid confusion when targets are discussed.
Common mistakes
They use the words markup and margin interchangeably, so a pricing target is misunderstood by sales and finance.
They divide profit by cost and call the result margin, giving 25% instead of 20%.
Practise a follow-up
If management wants a 25% margin on cost of 80, what price is needed?
How would you convert a markup target into the equivalent margin?
8. If defined cost is 70 and the target margin is 30%, what price meets that target?
Answer guide
For a target margin on revenue, price equals cost divided by one minus the margin. So 70 divided by 0.70 gives 100, and the margin check is 30 over 100, which is 30%. The common shortcut of adding 30% to cost gives 91, and the margin on that is only 21 over 91, about 23%, so it misses the target. I would also confirm the cost basis and assumptions, such as whether the 70 includes shared costs or contingency, since a change in cost changes the price needed.
What this question explores
Whether you can derive a price from a target margin using the right formula, and avoid the markup shortcut that understates the price.
Common mistakes
They add 30% to cost and quote 91, which delivers a lower margin than the target.
They apply the formula without confirming what the 70 cost includes, so the price rests on a wrong base.
Practise a follow-up
What price would be needed for a 40% margin on the same cost?
What would you do if the customer will only pay 90?
9. Why should a commercial review distinguish engagement contribution from profit after shared overhead?
Answer guide
They answer different questions. Engagement contribution shows whether delivery economics work after direct costs, while profit after shared overhead shows whether the whole business is viable once required costs such as management, tools and sales are paid. I would explain the allocation policy and avoid mixing the two measures in one comparison. A positive contribution may still leave the business unprofitable after other required costs, so teams cannot celebrate contribution alone. Equally, an engagement should not be judged a failure only because an arbitrary overhead allocation pushed it below zero.
What this question explores
Whether you separate delivery contribution from fully loaded profit, explain allocation clearly, and use each measure for the decision it suits.
Common mistakes
They present contribution as if it were the business's profit and ignore the shared costs still to be paid.
They judge an engagement only on allocated overhead, which depends on policy and not on delivery performance.
Practise a follow-up
How would you decide whether a low-contribution account is worth keeping?
How would you handle a dispute between two units about how overhead is allocated?
10. Why should signed backlog not be treated as immediate recognized revenue?
Answer guide
Backlog is future contracted work under defined reporting rules, so it tells me about expected demand, not about what has been earned. Revenue recognition depends on applicable accounting requirements and actual performance, which can span many months. If I counted a twelve-month contract entirely this quarter, I would overstate current results and mislead planning. I would reconcile backlog status with finance rather than convert the entire contract value into current revenue. The limit is that definitions of backlog vary, for instance with cancellation rights, so I would check what the reported number includes.
What this question explores
Whether you understand that signed backlog is contracted future work, not earned revenue, and check recognition with finance.
Common mistakes
They count the whole signed contract value as this period's revenue.
They assume backlog is guaranteed without checking cancellation rights or the reporting definition.
Practise a follow-up
How would you convert a backlog figure into an expected revenue forecast by quarter?
What would change if the contract can be cancelled with short notice?
11. Why does invoicing a customer not by itself prove cash has been received?
Answer guide
An invoice is a billing event and may create a receivable, but collection is a separate event when the customer actually pays. Between them there may be payment terms, queries, approvals or disputes. I would track payment against the invoice, note disputes and agreed terms, and chase early. The accounting treatment should follow finance policy, while cash planning reflects actual and expected receipts. For example, an invoice raised on the last day of the month with sixty-day terms will not help this month's cash at all. I would never plan salaries or supplier payments on invoiced but uncollected amounts.
What this question explores
Whether you separate billing from collection, track receivables and disputes, and plan cash on expected receipts rather than invoices raised.
Common mistakes
They treat an issued invoice as cash in the bank and plan spending against it.
They ignore payment terms and disputes when forecasting when the money will arrive.
Practise a follow-up
How would you forecast collections when a customer often pays late?
What would you do if an invoice is disputed over one line item?
12. What should influence choosing fixed-price rather than time-based pricing?
Answer guide
I would look at how clear the scope is, how much uncertainty remains, whether we control the delivery risks, the incentives each model creates and what the customer actually needs. Fixed price suits well-defined work where the supplier controls the drivers; time-based suits uncertain or evolving scope. I would compare total exposure and authority, meaning who decides changes. A familiar model is not automatically appropriate when the supplier cannot control important cost drivers, such as customer decisions or third-party systems. A hybrid, with fixed price for a defined phase and time-based for discovery, is often a reasonable compromise.
What this question explores
Whether you choose a pricing model from scope clarity, uncertainty, control of risk and incentives, rather than habit or familiarity.
Common mistakes
They default to fixed price because customers like certainty, even when the scope is unclear and uncontrolled.
They choose time-based pricing only to protect margin without considering the customer's need for budget predictability.
Practise a follow-up
How would you structure a hybrid model for a project with an uncertain discovery phase?
What changes would you make if the customer insists on fixed price for unclear scope?
Choose one answer containing an example or practical sequence. Explain what you would actually do, what you would check and when you would ask for help. Keep claims about your experience honest.
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