Selling Price Formula: 3 Methods With Worked Examples
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Do your selling prices truly meet your margin goals?
Let's plan an exchangeDiscover our pricing softwareThe retail price is calculated based on the purchase cost excluding tax:retail price excluding tax = purchase cost excluding tax ÷ (1 − target Gross margin ), or purchase cost excluding tax × multiplier. VAT is then added to arrive at the displayed price including tax, without ever falling below the threshold for selling at a loss.
The Essentials
- The calculation of the selling price is based on the actual purchase cost, after deducting supplier discounts, and never on the list price.
- Using a " Markup " in a formula intended for a " Gross margin " inflates the resulting price.
- It sets a starting price, which is then adjusted by the market, psychological price levels, and the break-even point.
Le calcul du prix de vente expliqué en 1 minute
Lire la transcription de la vidéo
Un produit vous coûte dix euros. À combien le vendre ?
Douze ? Quinze ?
Au doigt mouillé ? Non : on calcule !
On part du coût d'achat hors taxes, et on le multiplie par un coefficient. Dix euros fois un virgule cinq : quinze euros hors taxes.
Et voici le piège classique ! Cinq euros de marge, c'est cinquante pour cent du coût d'achat : le taux de marge.
Mais seulement trente-trois pour cent du prix de vente : le taux de marque.
Ensuite, on ajoute la TVA. À cinq virgule cinq pour cent sur l'alimentaire, nos quinze euros deviennent quinze euros quatre-vingt-trois.
Et attention au plancher : la loi interdit de revendre sous le seuil de revente à perte.
Mais un prix bien calculé n'est pas forcément le bon prix ! Le client, lui, regarde la concurrence.
Avec Booper, vos règles de marge, le seuil de revente à perte et les prix concurrents s'appliquent automatiquement, et l'IA simule l'impact avant de publier.
Calculer, c'est la base. Piloter, c'est mieux.
À retenir !
Selling price calculation explained in 1 minute
Read the video transcript
A product costs you ten euros. What should you sell it for?
Twelve? Fifteen?
A wild guess? No: you calculate it!
Here's the selling price formula: take your cost price before tax and multiply it by a coefficient. Ten euros times one point five: fifteen euros.
And here comes the classic trap! Five euros of profit is fifty percent of the cost: that's your markup.
But it's only thirty-three percent of the selling price: that's your margin.
Then you add sales tax, or VAT. At the standard twenty percent rate, our fifteen euros become eighteen euros.
And watch the floor: in some countries, like France, selling below cost is simply illegal.
But a well-calculated price isn't always the right price! Your customers are comparing you with the competition.
With Booper, your margin rules, price floors and competitor prices apply automatically, and AI simulates the impact before you publish.
Calculating is the baseline. Steering your prices is what wins.
Key takeaway!
In 6 Questions
Convert a purchase cost into a listed price that yields the target margin.
Pricing teams, procurement teams, category managers, and merchandisers.
Every time a product is listed, a supplier raises its prices, or there is a change in strategy.
By reference, then adjusted by store, channel, or region.
Ensure profit margins while remaining in line with the market.
Purchase price excluding tax ÷ (1 − Gross margin), then add VAT.
The 3 Formulas for Calculating a Selling Price
Depending on the target margin you start with, three formulas yield the same result.
| You're leaving from | Formula for Calculating the Sales Price Excluding Tax |
|---|---|
| Target y Gross margin (margin on selling price) | Purchase cost (excluding tax) ÷ (1 − Gross margin) |
| A Target Markup e (margin over cost of goods purchased) | Purchase price (excluding tax) × (1 + Markup) |
| A multiplier coefficient | Purchase cost (excluding tax) × coefficient |
| The price excluding tax, to calculate the price including tax | Sales price (excluding tax) × (1 + VAT rate) |
In retail, targets are most often set using Gross margin : this is therefore the primary formula used on a day-to-day basis. GrossMarkup , expressed as a percentage of the selling price, follows the same logic.
Step-by-Step Example of How to Calculate the Selling Price
A product purchased for €10 (excluding tax), with a 30% Gross margin , and a 20% VAT rate, is displayed as €17.14 including tax.
of the sales price excluding tax: 10 ÷ (1 − 0.30).
unit margin, or 30% of the price excluding tax (and 42.9% of the purchase cost).
Price including tax: 14.29 × 1.20.
The corresponding multiplier is 1.43 (14.29 ÷ 10).
Applying 30% to the purchase cost by mistake would result in €13 (excluding tax): a lost margin of €1.29 on each unit sold. This is the most common source of confusion between Gross margin and Markup.
From the calculated price to the listed price
The price calculated using the formula is just a starting point: three factors adjust it before it appears on the label.
- The market: A price that is significantly higher than competitors' for a comparable product drives customers away.Analyzing competitors' prices shows where to align your pricing and where to maintain your margin.
- Price thresholds: €17.14 will often become €16.99 or €17.49, depending on the psychological pricing strategy and its impact on the margin.
- The law: Resale at a loss is prohibited, and for food products, the threshold for resale at a loss is increased by 10 percent—a provision extended through April 15, 2028, by Law No. 2025-337 of April 14, 2025 (Deloitte Avocats).
On a large scale, these trade-offs are reflected in pricing rules: this is the purpose of retail pricing.
The 3 Common Mistakes in Calculating the Selling Price
Incorrect cost basis, incorrect rate, or VAT omitted from the rounding.
- Calculate based on the supplier's list price: the correct basis is the actual purchase price, after deducting discounts and incentives.
- Apply a " Markup " instead of a " Gross margin": the resulting price is too low, and the actual margin is below the target.
- Rounding the price (including tax) without recalculating the margin: changing the price from €17.14 to €16.99 (including tax) results in a loss of €0.13 in margin (excluding tax) per unit.
Frequently Asked Questions
Short answers to the most frequently asked questions about calculating the selling price.
Selling Price Formula: Margin, Markup and the Trap to Avoid
To calculate a selling price, start with the purchase cost excluding tax and the target margin: selling price excluding tax = purchase cost excluding tax ÷ (1 − Gross margin). For a product purchased for €10 excluding tax with a target margin of 30% Gross margin, the result is €14.29 excluding tax, or €17.14 including tax at a 20% VAT rate. This calculated price is then adjusted to market conditions, psychological price points, and the break-even point. Be careful with the basis for the rate: applying 30% to the purchase cost would result in €13 (excl. tax) and an actual margin lower than the target.
What is the formula for calculating the pre-tax selling price?
The formula for the pre-tax selling price depends on the target margin. Based on a “ Gross margin ” (margin-based pricing): pre-tax selling price = pre-tax purchase cost ÷ (1 − Gross margin). Based on a “ Markup ” (cost-based pricing), set on the cost: pre-tax selling price = pre-tax purchase cost × (1 + Markup). Based on a multiplier coefficient: selling price (excl. tax) = purchase cost (excl. tax) × coefficient. All three methods yield the same result if the rates are consistent; in retail, the first method is the most commonly used, since targets are set in Gross margin.
Selling Price Formula: Margin, Markup and the Trap to Avoid
To calculate a selling price using a multiplier, multiply the purchase cost (excluding tax) by that multiplier: a product purchased for €10 (excluding tax) with a multiplier of 1.43 sells for €14.30 (excluding tax). The multiplier coefficient is the ratio of the selling price to the purchase cost; it is equal to 1 ÷ (1 − Gross margin). A coefficient of 1.43 therefore corresponds to approximately 30% of Gross margin, while a coefficient of 2 corresponds to 50%. The coefficient is useful for applying a uniform rule to an entire product line, but it is best applied by category rather than across the entire catalog.
How do you convert a sales price excluding tax to a price including tax?
To convert a sales price excluding tax to a price including tax, multiply the price excluding tax by (1 + VAT rate): × 1.20 for a 20% VAT rate, × 1.055 for a 5.5% VAT rate on most food products, × 1.10 for a 10% VAT rate. Conversely, price excluding tax = price including tax ÷ (1 + VAT rate). Example: €14.29 excluding tax equals €17.14 including tax at a 20% VAT rate. If the price including tax is then rounded to €16.99, the margin excluding tax must be recalculated: the rounding results in a loss of approximately €0.13 excluding tax per unit.
Can you sell something for less than what you paid for it?
No, you cannot sell below the purchase price: reselling at a loss is prohibited in France, except in cases provided for by law, such as sales, liquidations, or perishable goods at risk of spoiling. The threshold is calculated based on the actual purchase price—after deducting discounts and supplier benefits—plus taxes and shipping costs. For food products, this threshold is further increased by 10%, a provision extended through April 15, 2028, by Law No. 2025-337. Any price calculation must therefore verify this minimum threshold before publication.
What is the difference between the selling price and the suggested retail price?
The selling price is set freely by the retailer; the suggested retail price, or SRP (manufacturer's suggested retail price), is merely a recommendation from the supplier. The retailer is never required to follow it: they may sell at a higher or lower price, and a supplier that imposes a minimum price would be subject to penalties for anti-competitive practices. The suggested retail price remains a useful benchmark for determining market positioning. For legal details, see MSRP and suggested retail price.
Should the markdown be included in the calculation of the selling price?
Yes, for categories that are structurally subject to markdowns: fresh produce, seasonal items, and fashion. A price calculated without allowing for markdowns reflects a theoretical margin that the category will never actually achieve. The standard practice is to factor an expected markdown rate into the cost of goods sold, calculated by product category based on historical data.
Key Takeaways
- Selling price (excluding tax) = purchase cost (excluding tax) ÷ (1 − Gross margin).
- Always use the actual purchase price as the starting point and specify the basis for the rate.
- The calculated price is then adjusted based on market conditions, price thresholds, and the threshold for selling at a loss.
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In France, a suggested retail price (SRP) is never binding on the retailer: the retailer remains free to sell at a higher or lower price, with the only lower limit being the sale at a loss. What the law prohibits is imposing a minimum resale price, either directly or indirectly, and a retailer who accepts such a system may also be subject to penalties.
The MSRP reflects the margin the manufacturer intends for its entire distribution network, not the role of the product as a benchmark on your shelf. Adjusting it may be justified for products that customers compare; otherwise, it’s a margin decision to be made category by category, rather than a legacy setting.
Setting a selling price depends on three key factors (costs, demand, and competition), but in retail, the challenge lies elsewhere: a legal minimum price (SRP+10 for food products through April 15, 2028) and up to 40,000 SKUs in a hypermarket, which must be tailored to each individual store.
Pricing then becomes a set of rules: target prices, minimum and maximum prices per retail location, automatic legal checks, limited variations, and clearly defined exceptions. These safeguards ensure that every price is justifiable and are verified over time by comparing them to control stores.
The margin, the Gross margin , and the Markup do not measure the same thing, and confusing them distorts all the resulting pricing decisions.
Once the formulas are in place, the challenge becomes operational: tracking a margin that fluctuates weekly, item by item, and assigning each category its own target rather than a single rate recalculated once a quarter.