Work out profit margin, markup, and total profit from cost, selling price, and quantity.
This tool provides estimates for informational purposes only. It is not a substitute for professional advice. Individual results vary based on your inputs and assumptions, so review important decisions with a qualified professional.
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Profit margin is one of the most important metrics in business finance. Whether you run a small e-commerce store, a restaurant, a manufacturing company, or a SaaS platform, understanding your margins determines pricing strategy, viability, and growth potential. This complete guide covers gross margin, operating margin, net margin, the critical difference between markup and margin, industry benchmarks, and how taxes and VAT in the UK and US affect your reported profitability.
The single most common error in business finance is confusing margin and markup. They are calculated from the same numbers but produce very different percentages:
Example: A product costs £40 to make and sells for £100.
The margin (60%) and markup (150%) refer to the same transaction but look completely different. Confusing the two leads to serious pricing errors. If you want a 40% margin, you need a 66.7% markup (not a 40% markup, which gives only a 28.6% margin).
These conversion formulas are essential for pricing:
| Target Margin | Required Markup |
|---|---|
| 20% | 25% |
| 30% | 42.9% |
| 40% | 66.7% |
| 50% | 100% |
| 60% | 150% |
Gross margin measures profitability before overhead costs (rent, salaries, marketing, utilities). It shows how much profit is generated from the direct cost of producing goods or services.
Gross Margin = (Revenue − COGS) ÷ Revenue × 100
Where COGS = Cost of Goods Sold (materials, direct labour, manufacturing costs).
Operating margin (also called EBIT margin) subtracts operating expenses from gross profit:
Operating Margin = Operating Income ÷ Revenue × 100
Operating income = Gross Profit − Operating Expenses (SG&A, R&D, depreciation). This shows the profitability of the core business before interest and taxes.
The "bottom line" — what remains after all expenses including interest and taxes:
Net Margin = Net Profit ÷ Revenue × 100
Net profit = Revenue − COGS − Operating Expenses − Interest − Taxes.
Used in management accounting for product-level decisions:
Contribution Margin = (Revenue − Variable Costs) ÷ Revenue × 100
This shows how much each product contributes to covering fixed costs. Products with negative contribution margins should be discontinued; those with high contribution margins are priorities for growth.
| Industry | Gross Margin | Net Margin |
|---|---|---|
| SaaS / Software | 70–80% | 10–25% |
| Retail (general) | 25–50% | 1–5% |
| Restaurants / Food Service | 60–70% | 3–9% |
| Manufacturing | 20–40% | 5–15% |
| Healthcare / Pharmaceuticals | 50–80% | 10–20% |
| Construction | 15–25% | 2–8% |
| Financial Services | 50–70% | 20–30% |
| Grocery / Supermarket | 20–30% | 1–3% |
Note: Restaurants have high gross margins (food cost is typically only 28–35% of revenue) but very thin net margins due to high labour, rent, and utility costs.
Once you know your contribution margin, you can calculate your break-even point:
Break-even Revenue = Fixed Costs ÷ Contribution Margin%
Example: A business has £30,000/month in fixed costs and a 40% contribution margin. Break-even = £30,000 ÷ 0.40 = £75,000/month in revenue. Below this level, the business makes a loss.
UK businesses registered for VAT (required above the £90,000 threshold for 2024/25) charge 20% VAT on sales and reclaim VAT on purchases. VAT itself is technically neutral for VAT-registered businesses — but it affects cash flow and pricing perception. For businesses selling to consumers (who cannot reclaim VAT), a price including VAT is the competitive price, and margin must be calculated on the ex-VAT price.
UK business rates (a property tax on commercial premises) are a significant fixed cost for physical retailers. Business rates are calculated as: Rateable Value × Uniform Business Rate (UBR, 51.2p for 2024/25 for properties with rateable value above £51,000). A shop with a £100,000 rateable value pays £51,200/year in business rates — directly reducing net margin.
The US federal corporate income tax rate is 21% (post-Tax Cuts and Jobs Act 2017, applicable to C corporations). State corporate taxes add 0–12%, varying by state (Texas and Nevada: 0%; New Jersey: 11.5%). Combined, effective corporate tax rates of 25–30% are common. This directly reduces net margin — a company with 20% operating margin and 25% effective tax rate reports approximately 15% net margin.
Knowing your target margin allows you to price products correctly:
Selling Price = Cost ÷ (1 − Desired Margin)
Example: A product costs £60 to produce and you want a 40% gross margin. Selling price = £60 ÷ (1 − 0.40) = £60 ÷ 0.60 = £100.
This formula is commonly used in retail, hospitality, and manufacturing. It is different from simply adding a markup (£60 × 1.40 = £84, which gives only 28.6% margin, not 40%).
Margin = profit ÷ selling price. Markup = profit ÷ cost price. They are calculated from the same numbers but give different percentages. A product that costs £40 and sells for £100 has a 60% gross margin but a 150% markup. Confusing the two is a common and costly pricing error.
Gross Margin = (Revenue − Cost of Goods Sold) ÷ Revenue × 100. For example, if you sell a product for £100 and it costs £35 to produce, gross margin = (£100 − £35) ÷ £100 = 65%. This measures how much of each pound of revenue remains after covering direct production costs.
It depends heavily on industry. SaaS companies typically have 70–80% gross margins. Restaurants have 60–70% gross margins but only 3–9% net margins due to high overheads. Retailers have gross margins of 25–50% and net margins of 1–5%. A "good" margin is one above the industry average for your sector.
Use the formula: Selling Price = Cost ÷ (1 − Desired Margin%). For a 40% margin on a £60 cost item: £60 ÷ 0.60 = £100 selling price. Note: adding 40% markup to £60 gives only £84 (which is 28.6% margin, not 40%) — this is the margin vs markup trap.
For VAT-registered businesses, VAT is generally neutral because you collect it from customers and reclaim it on purchases. However, it affects your pricing — if your quoted price includes VAT, you only keep the ex-VAT portion. On a £120 (inc. VAT) sale at standard 20% rate, you keep £100 and remit £20 to HMRC. Margin must be calculated on the £100 ex-VAT revenue, not the £120 inclusive price.
Operating margin (EBIT margin) = Operating Income ÷ Revenue × 100. It measures profitability after subtracting all operating expenses (including SG&A, R&D, and depreciation) from gross profit, but before interest and tax. It shows the efficiency of the core business operations, independent of capital structure or tax strategy.
Contribution margin = (Revenue − Variable Costs) ÷ Revenue × 100. It shows how much each pound/dollar of revenue contributes to covering fixed costs and generating profit after variable costs are removed. Products with negative contribution margins lose money on every sale — a common signal that pricing or variable costs need adjustment.
The federal corporate rate of 21% plus state taxes (averaging 5–7%) creates an effective combined rate of approximately 25–28% for most US corporations. A business with 20% operating margin and 26% effective tax rate reports a net margin of approximately 14.8% (20% × (1 − 0.26)). Higher net margins are retained for reinvestment or shareholder returns.