How to set prices and calculate margin in your shop (2026)
A price tag is not a guess, it is a decision about whether your shop thrives or just scrapes by. Once you understand margin, the same products and the same customers can quietly turn into a healthier business.
Why pricing right is the difference between thriving and surviving
Most shops do not fail because nobody walks in. They fail because the prices on the shelf were set on a hunch, copied from the shop down the street, or never touched again after opening day. Sell too cheap and you work harder every month for less and less to show for it. Sell too dear without a reason and customers drift to the next door. The space in between, where the price is fair to the customer and still leaves you real profit, is where a shop actually grows.
The good news is that pricing is not luck or instinct. It is arithmetic you can learn in an afternoon. Once you know your numbers, you stop hoping a busy day will save the month and start knowing, item by item, exactly how much each sale puts in your pocket. That shift, from guessing to knowing, is what separates the shop that thrives from the one that merely survives.
Margin vs markup: the two numbers people confuse
This is the single most common mix-up in retail, and it costs real money. Margin and markup both describe your profit, but they measure it against different things, so the same euros give two very different percentages.
- Markup is your profit measured against your cost. It answers: how much did I add on top of what I paid?
- Margin is your profit measured against your selling price. It answers: of every euro the customer hands me, how much is profit?
Markup = profit ÷ cost · Margin = profit ÷ selling price
An example makes it click. A product costs you 10 and you sell it for 15. Your profit is 5. The markup is 5 ÷ 10 = 50%. The margin is 5 ÷ 15 = 33%. Same five euros, two numbers. Confuse them and you will think you are making more than you are. Many shopkeepers apply a "50% markup" believing they keep half of every sale, when in fact they are keeping a third. Always be clear which one you are talking about, and when you judge the health of your shop, think in margin.
Pricing from cost and a target margin (and VAT)
Once you decide what margin you want, working out the price is a single formula. You do not multiply your cost by the margin, that is the trap. You divide:
Net price = cost ÷ (1 − target margin)
Say a product costs 10 and you want a 40% margin. You divide 10 by (1 − 0.40), which is 10 ÷ 0.6 = 16.67. That 16.67 is your net price, the price before tax. Check it: profit is 16.67 − 10 = 6.67, and 6.67 ÷ 16.67 is indeed 40%. If you had simply added 40% to cost, you would have priced it at 14 and quietly earned a 29% margin instead of the 40% you intended.
Then comes VAT. The net price is what you keep; the shelf price the customer pays is the net price plus VAT on top. With a 21% rate, your 16.67 becomes 16.67 × 1.21 = 20.17 on the tag. The VAT is not yours, it passes through to the tax authority, so always build your margin on the net figure and add tax afterwards. Mixing the two up is how shops accidentally hand a slice of their margin to the taxman.
Never reverse-engineer margin from the tax-included price. If you calculate margin on the price with VAT included, every product looks more profitable than it really is. Strip the VAT out first, then measure. Your real margin lives in the net numbers.
Gross margin per product and per category: what is healthy
Gross margin is simply your selling price minus your cost, expressed as a percentage of the price. Tracking it per product tells you which items genuinely earn their place on the shelf. But the honest answer to "what is a good margin?" is: it depends on the category.
- Fast-moving essentials like fresh food, bread, or drinks often run on thin margins of 15 to 30%. They sell constantly, so volume does the work.
- Household goods, gifts, and specialty items can comfortably reach 50% or more, because customers are buying choice and convenience, not just price.
What really matters is your blended margin, the average across everything you sell. A few low-margin staples are fine if higher-margin items lift the overall number to a level that covers rent, staff, electricity, and every other cost with profit left over. Grouping products into categories lets you see this at a glance: maybe your drinks category runs lean while your gifts category carries the shop. Knowing that, you can protect the categories that pay the bills.
Pricing strategies that actually move the needle
Beyond the arithmetic, a few proven tactics shape how customers perceive and react to your prices. Used with intent, they lift sales without cheapening your shop.
- Psychological pricing. A tag of 9.95 reads as noticeably cheaper than 10.00, even though it is five cents. Round, clean prices suit premium items; charm prices ending in .95 or .99 suit everyday value. Match the format to the feeling you want.
- Loss leaders. Price one well-known staple very keenly, even at little or no margin, to pull people through the door. The trick only works if those visits fill a basket with full-margin items. A loss leader that customers buy alone is just a loss.
- Bundles. Selling items together for slightly less than their separate total raises the average basket and shifts slower stock. The customer feels they got a deal; you sell more units per visit and lift overall margin in money terms.
Strategy works on top of solid maths, not instead of it. Know the true margin of every item before you discount it, or a clever-looking promotion can quietly sell at a loss.
A, B and C products: pricing follows turnover
Not every product deserves the same pricing attention, and turnover is the sorting key. Split your catalogue into three groups by how much they sell and earn.
The logic flips the usual instinct: it is your slow C items, not your fast A items, where a generous margin makes the most sense. Fast movers compete on price and reward sharp pricing; rare items reward the margin that makes stocking them worthwhile.
Common mistakes that quietly drain your profit
Even careful shopkeepers fall into the same pricing traps. Watch for these:
- Copying the shop next door. Their rent, their suppliers, and their costs are not yours. Matching a competitor's price without knowing your own margin is how you end up selling at a loss while they make money on the very same tag.
- Ignoring overheads. A product can show a healthy gross margin and still lose you money once rent, staff, electricity, and waste are counted. Your prices have to cover the whole shop, not just the cost of the goods.
- Never reviewing prices. Costs creep up; tags stay frozen. Months later you are selling at a margin you would never have accepted, simply because nobody updated the number when the supplier raised the cost.
The frozen price is the silent killer. A supplier nudges your cost up 5% and you do not notice. Multiply that across hundreds of products over a year and a profitable shop slides into a struggling one, with no single dramatic moment to blame. A regular price review is the cheapest insurance you can buy.
How Bipe helps
Bipe turns all of this from spreadsheet maths into something you see at a glance. For every product you store the cost and the selling price, and Bipe shows you the margin per product automatically, so you always know what each sale really earns, net of VAT, without a calculator.
From there it gets practical. Print clean shelf labels straight from your catalogue when prices change, so the tag always matches the till. The reports rank your items and categories by margin, surfacing your best-earning products and flagging the ones running too lean, which makes your A, B and C sorting effortless. And because purchase costs live in the system, Bipe gives you the cost control to catch supplier increases before they quietly eat your margin.
On the paperwork side, electronic invoicing and Verifactu support are coming soon, so your shop will stay ready for what is ahead without you having to think about it today. The day-to-day job, knowing your margins and pricing with confidence, you can start right now.
Know your margin on every single sale
With Bipe you store cost and price per product and see your real margin instantly, plus reports on your best-earning items. Try it free.
Try Bipe free →Frequently asked questions
What is the difference between margin and markup?
Markup is the profit measured against your cost, while margin is the same profit measured against your selling price. If a product costs 10 and you sell it for 15, the markup is 50% (5 over 10) but the margin is 33% (5 over 15). They describe the same euros from two different angles, so always be clear about which one you mean.
How do I set a price from cost and a target margin?
Divide your cost by (1 minus the margin you want, expressed as a decimal). If a product costs 10 and you want a 40% margin, divide 10 by 0.6 to get a net price of 16.67. Then add VAT on top to reach the shelf price the customer pays. Pricing this way guarantees the margin instead of hoping for it.
What is a healthy gross margin for a shop?
It depends heavily on the category. Fresh food and drinks often run on thin margins of 15 to 30%, while household goods, gifts, or specialty items can reach 50% or more. What matters is your blended margin across everything you sell, and that it comfortably covers rent, staff, and all your other overheads with profit left over.
How often should I review my prices?
At least a couple of times a year, and immediately whenever a supplier raises your cost. Many shops quietly lose money because their selling price stayed the same while costs crept up for months. A quick review each season keeps your margins intact and stops silent erosion.