Business finance
Profit Margin Calculator Guide
Profit margin shows how much of each revenue dollar remains after costs. It is one of the simplest ways to understand whether pricing, costs, or sales mix are moving a business in the right direction.
Open the profit margin calculator and enter revenue plus cost of goods or services. The calculator returns profit, margin, and markup.
Profit Margin Formula
Profit = revenue - cost
Profit margin = profit / revenue x 100
Markup = profit / cost x 100
Worked Example
If a business brings in $12,000 of revenue and the direct cost of delivering that work is $7,200, profit before overhead is $4,800. The profit margin is 40%, and the markup on cost is about 66.7%.
| Metric | Example | Meaning |
|---|---|---|
| Revenue | $12,000 | Total sales before subtracting costs. |
| Cost | $7,200 | Direct cost of goods or services. |
| Profit | $4,800 | Revenue minus direct cost. |
| Margin | 40% | Profit as a share of revenue. |
Margin vs Markup
Margin and markup are often confused. Margin uses revenue as the base. Markup uses cost as the base. That means a 50% markup does not create a 50% margin.
If something costs $100 and sells for $150, the markup is 50%, but the margin is 33.3% because $50 profit is one-third of the $150 selling price.
What Costs Should You Include?
For a quick gross margin estimate, include direct costs such as inventory, materials, payment processing, contractor labor, packaging, shipping paid by the business, and direct software or fulfillment costs. For net margin, also include overhead such as rent, admin wages, marketing, insurance, tax, and professional fees.
Common Mistakes
- Pricing from competitor prices without checking actual costs.
- Forgetting refunds, discounts, merchant fees, and shipping leakage.
- Using markup when the business target is actually margin.
- Looking at average margin while one product line loses money.
FAQ
Not always. A lower-margin product with high volume can still be attractive, but only if cash flow and capacity work.
It depends on the industry, business model, risk, and overhead. Compare against your own history and direct peers where possible.
For true business performance, yes. A business that only works because the owner is unpaid is not showing its full cost.