Revenue may be growing while delivery becomes less profitable. Spending may be below budget because a critical role remains vacant. A strong month may reflect the timing of a project rather than a lasting improvement.

The COO’s task is to connect the numbers to the decisions, processes and behaviours behind them—and decide what needs to change.

Start with a comparable view

Before interpreting a movement, establish what you are comparing. Review the month and year to date against budget, the latest forecast and the comparable period last year. Consider seasonality and the underlying trend.

Work with finance to understand material accruals, revenue timing, one-off items and changes in cost classification. Moving a cost between categories can change a reported margin without changing the economics of the business.

Agree definitions before debating performance. A consistent view makes it easier to distinguish an operating issue from an accounting or timing effect.

Look beneath revenue growth

The first question is what drove the change: price, volume or the mix of products, services and customers.

Growth won through discounting has different implications from growth driven by better pricing. A large contract may bring revenue while demanding more customisation, management attention or delivery capacity than expected.

Ask which work is growing, what it takes to deliver and whether the business wants more of it. The headline P&L will rarely answer those questions alone; customer and product reporting should support the review.

Understand what is happening to margin

Gross profit is revenue less cost of sales. Gross margin expresses that profit as a percentage of revenue. Review both: a larger gross profit can coexist with a declining margin.

Consider an illustrative business whose monthly revenue rises from £500,000 to £600,000 while cost of sales increases from £300,000 to £390,000. Gross profit rises from £200,000 to £210,000, but gross margin falls from 40% to 35%.

The business is doing more work for relatively little additional gross profit. That is a prompt to investigate pricing, mix, supplier costs and delivery performance—not proof of any single cause. Depending on the business, examine overtime, subcontracting, rework, wasted materials or unbilled scope. Confirm where those costs sit in the accounts; delivery labour, for example, is not classified identically in every business.

Test whether growth is creating complexity

Company averages can conceal work that absorbs a disproportionate share of resources. A customer may look attractive until frequent changes, small orders, urgent requests and extended support are considered.

Use a supporting contribution analysis by customer, service or channel. State which costs are included, distinguish traceable costs from allocated overhead and avoid treating a rough allocation as precise evidence.

The operational response may be to change pricing, tighten scope, redesign the service or improve scheduling. Start by understanding the source of the burden before deciding to stop serving a customer.

Read spending alongside capacity

An underspend is not automatically good performance. A vacant role can reduce payroll while increasing delays, overtime or dependence on a few experienced people. Deferred maintenance or training can improve this month’s result while creating future problems.

Equally, higher spending may be an intentional investment ahead of growth. The COO should test whether the capacity was needed, when it should become productive and whether demand still supports the decision.

Pair the P&L with a few relevant operating measures: output per paid hour, utilisation, on-time delivery, error rates or backlog age. Choose measures that explain the economics of the business and check that productivity gains are not coming at the expense of quality.

Check what profit leaves out

Profit is not cash. Sales recognised in the P&L may remain unpaid, while inventory purchases, capital expenditure and loan principal repayments can use cash without appearing as equivalent expenses in that period.

Read the P&L alongside the balance sheet and cash-flow forecast. Ask whether overdue receivables, stock levels, work awaiting billing or supplier payment timing are placing pressure on the business.

The practical question is whether the company can fund the activity required to deliver its plan. A profitable order book does not, by itself, answer that question.

Turn the review into decisions

A useful P&L review ends with a small number of actions. For each material variance, agree the likely cause, the evidence still needed, the accountable owner and the date for a decision or follow-up.

If subcontracting costs have increased, for example, establish whether the cause is a skills gap, poor scheduling or demand above plan. Each explanation calls for a different response. Simply asking the team to spend less may make delivery worse.

Keep finance and operations connected: finance helps establish reliable numbers, while operating teams test the explanations against what is happening in the business.

The most useful question is not simply whether the business made enough profit this month. It is what the result tells you about how the business works, and what you will do with that knowledge.