Profit margin is one of the most cited numbers in business, yet it is regularly confused and misused. Gross margin gets mixed up with net margin. Margin gets mixed up with markup. This guide explains what each metric actually measures, how to calculate them, and what benchmarks you should compare yourself against.
The Three Profit Margins
Gross Profit Margin
Formula: (Revenue minus Cost of Goods Sold) divided by Revenue, multiplied by 100
Gross profit is what remains after subtracting the direct costs of producing your product or delivering your service. For a product business, direct costs (also called COGS: Cost of Goods Sold) include raw materials, manufacturing labour, and packaging. For a service business, direct costs include the time your team spends delivering the service, freelancer fees, and any materials used in delivery.
Example: A software agency invoices £100,000 to clients. The direct costs of delivery (developer time, subcontractors, software licences used per project) total £40,000.
Gross profit = £100,000 minus £40,000 = £60,000 Gross margin = (£60,000 / £100,000) x 100 = 60%
Gross margin tells you how efficiently you produce your product or service. A high gross margin means there is plenty of revenue left to cover overhead and generate profit. A low gross margin means your core business model is tight and overhead leaves little room for error.
Operating Profit Margin (EBIT Margin)
Formula: (Revenue minus COGS minus Operating Expenses) divided by Revenue, multiplied by 100
Operating profit (also called EBIT: Earnings Before Interest and Tax) takes gross profit and subtracts operating overhead: salaries not included in COGS, rent, utilities, marketing, software subscriptions, insurance, and depreciation.
Continuing the example: The agency above has operating overhead of £35,000 (admin salaries, office, marketing).
Operating profit = £60,000 minus £35,000 = £25,000 Operating margin = (£25,000 / £100,000) x 100 = 25%
Operating margin tells you how profitable your core business is before financing costs and taxes.
Net Profit Margin
Formula: Net Profit divided by Revenue, multiplied by 100
Net profit is what remains after everything: COGS, operating expenses, interest payments on loans, and corporation tax.
Continuing the example: The agency pays £3,000 in loan interest and £4,400 in corporation tax.
Net profit = £25,000 minus £3,000 minus £4,400 = £17,600 Net margin = (£17,600 / £100,000) x 100 = 17.6%
Net margin is the "bottom line" figure. It represents the actual percentage of revenue that converts into owner profit or retained earnings.
Margin vs Markup: The Difference Matters
Margin and markup are calculated from different starting points and produce different numbers for the same product. Confusing them leads to underpricing.
Margin is calculated as a percentage of the selling price. Markup is calculated as a percentage of the cost.
Example: You buy a product for £50 and sell it for £75.
- Gross profit = £25
- Margin = (£25 / £75) x 100 = 33.3%
- Markup = (£25 / £50) x 100 = 50%
If you want a 40% margin, you need a 66.7% markup, not a 40% markup. Many businesses discover they have been underpricing for years because they confused the two.
Industry Profit Margin Benchmarks
These are approximate net margin benchmarks. Gross margins vary enormously by business model.
| Industry | Typical Net Margin |
|---|---|
| Software / SaaS | 15% to 30% |
| Professional services | 10% to 25% |
| Retail (online) | 2% to 8% |
| Retail (physical) | 1% to 5% |
| Restaurants / hospitality | 2% to 6% |
| Construction | 2% to 8% |
| Manufacturing | 5% to 12% |
| Healthcare / medical | 5% to 15% |
| Consulting | 12% to 25% |
| Freelance / sole trader | 30% to 60%* |
*Sole traders and micro-businesses often show higher net margins because overheads are minimal, but this does not account for the owner's time which is the main cost of the business.
There is no universally "good" margin. A 5% net margin is excellent for a high-volume grocery retailer and terrible for a boutique consulting firm. Compare yourself to your own industry and track changes over time.
How to Improve Your Profit Margin
There are only three levers available: increase revenue, reduce direct costs, or reduce overhead. The practical options within each lever depend on your business model.
Increase Prices
This is usually the highest-impact and lowest-effort lever, especially for service businesses. A 5% price increase on the same volume of work goes directly to gross profit. Many businesses resist price increases out of fear of losing clients, but price-sensitive clients who leave often free up capacity for higher-value work.
Reduce Direct Costs
For product businesses: negotiate with suppliers, find alternative materials, reduce waste, or redesign the product for manufacturability. For service businesses: improve delivery efficiency so each engagement requires fewer billable hours to complete.
Improve Utilisation
For agencies and professional services: if your team is 60% utilised (billed to clients) and you could improve to 70%, your gross margin improves significantly with no change in headcount. Track utilisation rates.
Review Overhead Regularly
Many businesses accumulate software subscriptions, services, and staff costs without regularly reviewing whether each one still justifies its cost. A quarterly overhead review often identifies meaningful savings.
Mix-Shift Towards Higher-Margin Work
Not all clients or projects deliver the same margin. If you track margin by client, you may find that your highest-revenue client has a lower margin than a smaller client due to complexity, scope creep, or lower rates. Consciously shifting the mix of work towards higher-margin projects improves overall profitability without increasing revenue.
Related Calculations
Understanding your profit margin is more useful alongside these related metrics:
- Break-even point: At what revenue level do you cover all costs? Use our Break-Even Calculator.
- Return on investment: What return are you getting on a specific investment or marketing spend? Use our ROI Calculator.
- Profit margin calculator: Try different revenue and cost scenarios instantly with our Profit Margin Calculator.
EBITDA vs Net Profit
You will sometimes see EBITDA (Earnings Before Interest, Tax, Depreciation, and Amortisation) used as a proxy for operating profitability. EBITDA adds back non-cash charges (depreciation and amortisation) to operating profit. It is widely used in business valuations because it strips out financing structure and accounting policies.
For most small businesses and freelancers, net profit is the more meaningful number. EBITDA becomes relevant when comparing businesses of different sizes or structures, or when preparing for a business sale.
All margin calculations are estimates. Business financial decisions should always be discussed with a qualified accountant.