Gross Margin vs. Markup: Use the Right Formula to Set a Price

“Add 35%” sounds clear until two people use different starting points. One adds 35% to cost. The other expects 35% of the selling price to remain after the cost of the item. Those are different prices, even though both people are discussing the same product.

The difference matters when you set prices. Dividing by the wrong amount in a spreadsheet can leave you with less gross profit than planned.

The difference is what you divide by

Markup measures gross profit relative to cost. Gross margin measures gross profit relative to revenue. For a single item, gross profit is selling price minus the cost assigned to that item. Sales tax collected from the customer is excluded from selling price in these calculations.

The difference between markup and gross margin

Measure	Formula	Question answered
Markup	(Price − cost) ÷ cost	How much was added relative to cost?
Gross margin	(Price − cost) ÷ price	What share of revenue remains after that cost?

Both percentages can be useful. Just do not confuse them. Label each one clearly and state which costs you include. Use the same costs when comparing products or time periods.

A 35% target produces two different prices

In this original hypothetical example, a maker assigns a cost of $26 to a ceramic serving bowl. The calculation deliberately excludes sales taxes and assumes that $26 is the relevant item cost for the comparison.

The difference in selling price is $4.90 per bowl. At 80 bowls, that is $392 in revenue and gross profit difference if quantity and item cost remain unchanged. It is not a prediction that customers will buy the same quantity at either price.

To convert a target margin into a price, divide cost by one minus the margin expressed as a decimal. Do not divide by the margin itself. A target margin of 100% cannot be reached with a positive item cost under this formula.

Check the discount and the cost definition

Suppose the $40 bowl is discounted by 10%. The new price is $36, while cost remains $26. Gross profit becomes $10 and gross margin becomes about 27.78%. A 10% price reduction does not simply subtract ten percentage points from the original 35% margin.

Then question the $26. Does it consistently include the relevant materials and production costs? Are recoverable sales taxes excluded where appropriate? Have shipping costs been treated consistently? A precise formula cannot repair an inconsistent cost base.

For a service, first decide what you are pricing: an appointment, a billable hour or a fixed-fee project. Each has different costs. Remember that time you could sell but do not sell also affects your ability to cover the business's total expenses.

Do not simply average product margins. Consider the sales mix: how much of each product you sell. A high-margin item that rarely sells may not make up for a popular low-margin item.

A short pricing check before you approve

• Label every percentage as markup or margin, not simply “profit.”
• Specify whether prices are before sales tax and which costs are included.
• Test the formula with one item whose dollar amounts you can follow.
• Recalculate after discounts, supplier changes and product-mix changes.
• Compare the result with overhead, capacity and customer demand.

Gross margin is not net profit, which is what remains after all expenses. Rent, administration and other costs may still need to be paid. Use margin to help set a price, but also consider customer demand and what the business can deliver. The formula does not guarantee a profit.