What is the difference between gross profit margin and markup?
GP margin measures profit as a percentage of net sales. Markup measures profit as a percentage of cost. Net sales here means sales excluding any sales VAT. Both can be useful, but they are not interchangeable.
Suppose a dish costs £5 in ingredients and sells for £10 before VAT. The £5 difference is its food gross profit. Divide £5 by the £10 net sale and the GP margin is 50%. Divide the same £5 by the £5 cost and the markup is 100%.
GP % = (net sales − cost) ÷ net sales × 100
Markup % = (net sales − cost) ÷ cost × 100
A zero cost makes markup undefined because its denominator is zero. A zero selling price makes GP margin undefined for the same reason. A selling price below cost produces a negative margin; it is not an error to show a loss.
Margin-to-markup conversion table
The table converts a chosen margin into an equivalent markup, assuming the same cost and sale. It is an arithmetic comparison, not a list of recommended GP targets.
| GP margin | Food cost % | Equivalent markup |
|---|---|---|
| 50% | 50% | 100% |
| 60% | 40% | 150% |
| 65% | 35% | 185.71% |
| 70% | 30% | 233.33% |
| 75% | 25% | 300% |
To convert a margin percentage to markup, divide the margin by 100 minus that margin, then multiply by 100. To convert a markup percentage to margin, divide the markup by 100 plus that markup, then multiply by 100.
For example, adding a 70% markup to £5 produces an £8.50 net selling price. Profit is £3.50, so GP is £3.50 ÷ £8.50 × 100 = 41.18%, not 70%. To achieve 70% GP at £5 cost, the unrounded net selling price is £16.6667; with 20% VAT the customer price is £20.
Food gross profit is not the bottom line
In menu development, a food GP calculation often deducts the ingredient cost from the net menu price. It does not automatically account for chef time, service staff, rent, utilities or finance costs. Company accounts may classify some direct labour and other expenses within cost of sales; use the definition appropriate to your reporting.
That distinction matters when comparing a labour-intensive dish with a prepared or ready-to-serve option. A lower ingredient margin can still be commercially attractive when the whole operating model is considered. The reverse can also be true. Check actual costs rather than assuming one format is always more profitable.
DishLab combines menu development with kitchen implementation. Our bespoke luxury ready-to-serve meals are developed with specialist manufacturing partners and licensed on agreed client terms. Any labour or purchasing benefit must be measured for the particular operation.
Theoretical versus actual GP
Theoretical GP uses the recipe cost, standard portion and assumed selling price. Actual food GP uses the matching net sales and food consumed over a trading period, adjusted for stock movement and any relevant transfers or accounting adjustments.
A useful starting point for food used is opening stock plus purchases minus closing stock. Do not substitute cash paid to suppliers for purchases in the period, or compare one week’s sales with a month’s buying. Establish consistent stock valuations and treatment of waste, staff meals and transfers with the person responsible for your accounts.
To compare recipes across a menu, weight the totals by portions sold. Do not simply average the GP percentages: a low-volume premium dish and a high-volume snack do not contribute equally. Add their net sales and costs first, then calculate the overall margin.
When actual GP differs from the recipe model, check usable yield, portion sizes, stock recording, price changes, promotions and sales mix before changing the menu. Our food-cost percentage guide explains the costing side.
Check your figures without a spreadsheet
Use the free gross profit calculator with VAT to calculate GP and markup from the same figures. Alternatively, enter a target GP to find a selling price or a maximum food-cost allowance.
The calculator retains unrounded values during the calculation and rounds the display to two decimals. Target prices round up to a penny where necessary; maximum costs round down. Set the correct VAT rate and keep costs and sales on the same per-dish or trading-period basis.
For the decisions beyond the percentage, read how to price a menu. No calculator can decide your customers’ willingness to pay or replace a full operating budget.
About this guide
Prepared for DishLab’s food-development and kitchen-implementation website. Examples are illustrative arithmetic, not recommended margins, supplier prices or tax advice. Confirm tax treatment and cost classification for your own operation. Calculations shown here use pounds sterling.