A growing sales figure can hide an uncomfortable truth: if each sale leaves too little cash behind, growth can make your business busier without making it stronger. Profit margins show what you genuinely keep after the costs of delivering your product or service. For founders making fast decisions on pricing, hiring and investment, they are one of the clearest measures of whether growth is working.
The goal is not to chase the highest possible percentage at any cost. A healthy margin gives you room to pay yourself, invest in marketing, weather slow months and scale with confidence. The right target depends on your business model, sector, growth stage and customer expectations.
What profit margins actually tell you
A profit margin expresses profit as a percentage of revenue. It answers a simple but powerful question: for every £1 your business earns, how much is left after costs?
There are several versions, and confusing them can lead to poor decisions. Gross margin looks at the direct cost of making or supplying what you sell. Operating margin includes the day-to-day overheads required to run the business. Net margin is the final figure after all expenses, including tax and finance costs where applicable.
For most small businesses, gross margin is the first place to look when reviewing pricing, supplier costs and service delivery. Net margin matters when you need the full picture of commercial health. A business can have an excellent gross margin but weak net profit if payroll, premises or marketing spend has grown faster than revenue.
The key formulas
Gross profit is revenue minus direct costs, often called cost of goods sold. Your gross profit margin is:
Gross profit ÷ revenue × 100
Net profit is revenue minus all business costs. Your net profit margin is:
Net profit ÷ revenue × 100
If you sell £100,000 worth of products and their direct costs are £40,000, your gross profit is £60,000 and your gross margin is 60%. If all other costs leave £12,000 in net profit, your net margin is 12%.
Neither figure is meaningful in isolation. Compare margins over time, across product lines, customer types and sales channels. That is where the decisions become clearer.
Start with clean numbers, not assumptions
Many margin problems are calculation problems first. Founders often rely on headline revenue, an old pricing spreadsheet or an estimated delivery cost that no longer reflects reality. Inflation, supplier increases, extra support time and payment fees can quietly erode profitability.
Set up a monthly margin review using actual figures from your accounts. Separate direct costs from overheads consistently. For a product business, direct costs may include materials, manufacturing, packaging, fulfilment and shipping. For a service business, they can include contractor time, software used specifically to deliver the work and the labour cost of the team doing it.
Be careful with founder time. It may not appear as a wage in the accounts, but it still has value. If every new client requires hours of unpaid senior input, the service may be less profitable than it appears. Recording time for a few weeks can reveal where delivery is consuming margin.
Find the leaks before cutting costs
When margins tighten, a blanket cost-cutting exercise is tempting. It can also damage quality, morale or customer retention. Start by identifying the specific source of the pressure.
Look at which products, services and customers create the most gross profit in pounds, not only the highest percentage margin. A low-margin offer with high volume may still contribute meaningfully to overheads. Equally, a popular service may be tying up your best people while barely breaking even.
Common leaks include discounting without a clear strategy, uncharged scope creep, minimum order values that are too low, rising fulfilment costs, poor stock control and sales commissions that are not reflected in pricing. Subscription businesses should also track onboarding effort, support demand and churn. A customer who looks profitable in month one may become costly if they require extensive ongoing support.
Ask better questions of your data
Rather than asking, “How can we reduce costs?”, ask:
- Which offers produce the most cash after direct costs?
- Where are we giving away time, delivery or discounts without a return?
- Which costs rise every time we make a sale, and which are fixed?
- Are our best customers buying our most profitable offers?
These questions lead to focused changes instead of reactive cuts.
Improve pricing before racing for volume
Pricing is one of the fastest ways to improve margins, yet it is often treated as untouchable. Many early-stage businesses set prices low to win customers, then fail to revisit them as their reputation, costs and capability increase.
A price rise does not need to be dramatic or universal. You might introduce a higher-tier package, apply a minimum project fee, charge separately for expedited work or remove inclusions that customers do not value. For service businesses, clearer boundaries around revisions, meetings and turnaround times can protect margin just as effectively as a higher day rate.
The trade-off is real. Higher prices can reduce conversion rates, particularly in price-sensitive markets. But a lower volume of better-fit, higher-value customers can create more profit and reduce delivery strain. Test changes on new proposals, specific packages or a defined customer segment before rolling them out widely.
Price should reflect value, positioning and alternatives available to the customer, not simply your costs plus a modest mark-up. Costs establish a floor. The value you create helps define what the market will pay.
Make delivery more efficient without making it worse
Once pricing is sound, improve how work moves through the business. Efficiency is not about making every interaction automated or stripping out the human service customers appreciate. It is about removing repeatable friction.
Map the journey from sale to delivery. Where does work wait? Where are details re-entered? Which tasks are repeatedly handled by the most expensive person in the team? Standard operating procedures, templates, better onboarding and sensible automation can reduce delivery time while improving consistency.
For example, a marketing agency may find that every project starts with a custom briefing call, scattered documents and unclear approval stages. A structured client intake process and standard approval points can reduce wasted hours. The saved capacity can improve margins, support more clients or give the team space to do higher-value work.
Do not automate a broken process. First simplify it, then decide whether technology genuinely saves time or merely adds another subscription and another workflow to manage.
Protect margin through smarter sales decisions
Not all revenue is equal. A contract that fills the pipeline but requires heavy customisation, long payment terms and constant support may put pressure on cash flow and profit. Your sales team, even if that team is just you, needs clear guardrails around what a good deal looks like.
Set minimum acceptable margins for key offers. Build a simple approval process for discounts, non-standard terms and large custom requests. This does not have to slow sales down. It gives the business a way to say yes with discipline.
It also helps to review customer profitability periodically. Some customers become more valuable over time through repeat purchases and referrals. Others consistently demand more than the agreed scope. Have honest conversations, reset terms where necessary and be willing to stop pursuing work that distracts from your best opportunities.
Track a small margin dashboard each month
A practical dashboard keeps your attention on the measures that drive decisions. Alongside revenue and net profit, track gross margin by offer, average discount, direct delivery cost, payroll as a percentage of revenue, customer acquisition cost and cash collected.
Choose only the measures you will actually review and act on. A founder does not need a finance department’s full reporting pack to make better calls. They need enough visibility to see a trend early and investigate it.
If gross margin falls for two months, identify whether the cause is price, mix, supplier cost or delivery time. If net margin drops while gross margin holds steady, examine overheads and capacity. This distinction prevents the wrong fix.
Build margin into every growth decision
Margin should shape decisions before money is spent, not only after the month-end figures arrive. Before hiring, launching a new service or investing in paid acquisition, model the likely revenue, direct cost, fixed cost and break-even point. Use a cautious scenario as well as an optimistic one.
This is where structured advice can save founders significant time. A finance-focused coach can help turn a vague goal such as “grow profit” into practical actions across pricing, costs, sales and operations. Any Guru is designed to provide that kind of joined-up support, so you can move from figures on a spreadsheet to clear next steps.
Healthy margins are not created by one dramatic cut or one perfect price rise. They are built through regular, commercially honest choices. Measure what each sale truly costs, protect the value you provide and let profitability give your business the freedom to grow on your terms.








