Finance

Profit Margin Example: Step-by-Step Calculation

See a step-by-step profit margin example using revenue, cost, profit, and margin percentage.

Updated June 26, 2026

A profit margin example shows how revenue, cost, profit, and margin percentage work together. Profit margin is the percentage of revenue that remains after costs are removed. This guide walks through a simple example step by step so the formula is easier to understand.

Related toolProfit Margin Calculator

Use the calculator to check your own numbers, then read the guide for formulas, examples, and common mistakes.

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What This Example Will Calculate

This example calculates profit margin from revenue and cost. Revenue is the total amount earned from the sale. Cost is the amount spent to make, buy, deliver, or provide the product or service.

Profit is revenue minus cost. Profit margin is profit divided by revenue, then multiplied by 100.

You can follow the steps manually or use the Profit Margin Calculator to check the same numbers quickly.

Example Numbers

Suppose a product sells for 120. The total cost attached to the product is 75.

The cost may include product cost, packaging, payment processing, shipping supplies, fulfilment, or other direct costs.

The goal is to find how much profit remains and what percentage of the selling price that profit represents.

Step 1: Find Revenue

Revenue is the amount received from the sale. In this example, the revenue is 120.

Revenue should not be confused with profit. A sale of 120 does not mean the business keeps 120.

Costs must be removed before profit margin can be calculated.

Step 2: Find Cost

Cost is the amount spent to provide the product or service. In this example, the cost is 75.

The cost number should be realistic. If payment fees, packaging, discounts, or delivery supplies are part of the sale, they should be included when relevant.

Using too low a cost number can make profit margin look stronger than it really is.

Step 3: Calculate Profit

Profit is revenue minus cost.

In this example, profit is 120 minus 75, which equals 45.

This means 45 remains after the included cost is removed from the sale.

Step 4: Calculate Profit Margin

Profit margin is profit divided by revenue multiplied by 100.

In this example, profit margin is 45 divided by 120 multiplied by 100.

The result is 37.5%. This means 37.5% of the revenue remains as profit after the included cost is removed.

Step 5: Read the Result Correctly

A 37.5% profit margin means the business keeps 37.5% of the selling price as profit before any other expenses that were not included.

It does not mean the product has a 37.5% markup. Markup uses cost as the base, while margin uses selling price as the base.

For that difference, read Profit Margin vs Markup.

How This Connects to the Main Formula

This example follows the same structure explained in the Profit Margin Formula guide.

The main relationship is revenue minus cost equals profit, then profit divided by revenue gives the margin rate.

Once this structure is clear, you can use the same process for products, services, subscriptions, or project pricing.

Common Mistakes in Profit Margin Examples

The first mistake is using revenue as profit. Revenue is only the sale amount, not the amount kept.

The second mistake is forgetting smaller costs, such as transaction fees, packaging, returns, platform fees, or discounts.

The third mistake is mixing up margin and markup. The same sale can have one profit amount but different margin and markup percentages.

Conclusion

This profit margin example confirms that profit margin is based on profit divided by revenue.

In the example, revenue is 120, cost is 75, profit is 45, and profit margin is 37.5%. The calculation is simple, but the result is useful because it shows how much of the sale is actually kept as profit.

Related guides and tools

FAQs

What numbers do I need for a profit margin example?

You need revenue and cost. Profit is revenue minus cost.

How do I calculate profit margin?

Divide profit by revenue, then multiply by 100.

Is profit margin based on cost or revenue?

Profit margin is based on revenue. Markup is based on cost.

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Use the Profit Margin Calculator to calculate your own margin numbers.

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