Written by: JJ Tan, Founder, Jelly | Last updated: 25 July 2026
Key Takeaways for UK Restaurant Margins
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Food-cost percentage uses VAT-exclusive revenue: (Cost of Ingredients Sold ÷ Net Food Revenue) × 100, with UK benchmarks between 28–38% by sector.
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Accurate GP% depends on stripping VAT from all revenue figures before calculations, because gross figures can understate food cost by up to 5.7 percentage points.
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Prime cost, calculated as (Food + Beverage + Labour) ÷ Net Sales, is the clearest efficiency metric, with targets of 60–65% for casual dining and below 60% for pubs.
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Recipe costing must include yield adjustments and every ingredient, or plate costs on proteins and produce will be significantly understated.
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Track live GP% on every dish with Jelly’s restaurant food cost calculator UK and see how real-time margin insights work for your menu.
Core formulas for calculating restaurant food costs
Every UK operator needs two levels of calculation: period-level food cost and per-dish plate cost.
Period-level food cost %
Use the formula: (Opening Stock + Purchases − Closing Stock) ÷ Net Food Revenue × 100. A venue with £8,000 opening stock, £12,000 in purchases, £7,500 closing stock, and £40,000 gross weekly revenue must handle VAT first. Net revenue is £40,000 ÷ 1.20 = £33,333. Cost of food used is £12,500. Food cost % is 37.5%, which sits above the casual dining red-flag threshold.
Per-dish plate cost %
Use the formula: Total Ingredient Cost ÷ VAT-Exclusive Menu Price × 100. A dish with £8.00 ingredient cost on a £28.00 menu price has a net price of £28.00 ÷ 1.20 = £23.33. Food cost % is £8.00 ÷ £23.33 × 100 = 34.3%, not the 28.6% you get by dividing by the VAT-inclusive price, which creates a 5.7-point understatement.
GP % formula: GP % = (Net Revenue − Food Cost) ÷ Net Revenue × 100. A 34.3% food cost yields 65.7% GP.
For mixed-rate revenue, net revenue equals (standard-rated gross ÷ 1.20) plus zero-rated gross. Every calculation should strip VAT before running the formula, because using gross till takings overstates GP%.
GP and prime cost benchmarks for UK restaurants
UK hospitality typically targets 65–70% GP on food as the standard accounting convention. Pub operators often achieve a higher blended GP because wet sales carry stronger margins than food.
GP alone gives a partial view of performance. Prime cost, calculated as (Food Cost + Beverage Cost + Labour Cost) ÷ Net Sales × 100, provides the most complete picture of direct operating efficiency. Casual dining groups should target 60% to 65% prime cost, while bars and pubs should aim to keep prime cost below 60%.
The 2026 operating environment makes these targets harder to hit. Menu prices have risen, but the cost of doing business has risen faster, so operators are absorbing more cost instead of passing it fully to diners.
Even a 2-percentage-point margin drop compounds across significant turnover and can remove a substantial amount of annual profit.
See how Jelly calculates live GP% on every dish and explore how it can support your GP targets.
Costing a full dish, including waste and yield
Yield adjustment protects margins on proteins and produce. A whole chicken purchased at £6.50/kg that yields 65% usable meat has an effective cost of £10/kg. Leaving out the yield percentage column understates true food cost and hides the real impact of trimming and waste.
In Jelly’s Cookbook, chefs build a dish by clicking on ingredients already populated from scanned invoices. Jelly handles unit conversions, yield factors and VAT maths automatically, and what previously required tedious manual costing in spreadsheets now takes three minutes per dish. Ingredient costs update with every new invoice, so GP% on every dish stays live. A red percentage flags a margin drop, while green confirms an improvement.
Food waste can represent a significant share of total food cost, so reducing waste can materially improve food cost percentage. Stock theft also affects many hospitality businesses and can remove a notable share of food revenue each year. Both risks become visible in Jelly’s variance reporting between theoretical and actual food cost.
Menu pricing that hits your target GP
Reverse-engineering a menu price from a target GP uses a simple method. Net Selling Price = Ingredient Cost ÷ (1 − Target GP%). VAT-inclusive menu price = Net Selling Price × 1.20.
For example, with ingredient cost of £7.50 and a target GP of 70%, the net price is £7.50 ÷ 0.30 = £25.00. The menu price is then £25.00 × 1.20 = £30.00. A frequent error adds the desired margin percentage directly to cost before adding VAT, which produces a lower actual margin than intended. Adding 30% margin to a £40 cost yields only 23.1% actual margin, not 30%.
Delivery menus need a separate calculation because commission changes the economics. Delivery platform commissions of 25–35% erode margins on off-premise orders and must be modelled separately. Jelly’s Delivery Menu Creation feature duplicates existing dishes and factors in commission overheads automatically, so the GP target holds across every channel. Sushi Revolution uses Jelly to set separate target gross profits on dine-in and delivery menus, accounting for 30% delivery commissions, which results in actual gross profits 2–3% higher on average.
Supplier negotiation powered by cost data
Once you have set the right menu prices, protecting those margins depends on controlling what you pay suppliers. Effective supplier negotiation relies on line-item price history rather than gut feel. UK ingredient costs remain volatile in 2026, with oils, beef and coffee among the fastest risers. Hot drinks rose 14% and burgers 9% in price in February 2026 alone.
Jelly’s Price Alert feature flags every price increase or decrease by ingredient, quantity and supplier the moment a new invoice is scanned. This gives chefs and owners clear evidence to request credit notes, negotiate better rates or switch suppliers, without hours spent cross-referencing spreadsheets. Amber restaurant uses Jelly’s price change insights to make real-time pricing decisions, ingredient substitutions and supplier switches.
Three-phase path to implementing Jelly
Jelly is built to generate value within the first week, using a clear three-phase adoption path.
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Invoice capture (Days 1–7): Forward supplier invoices to a dedicated Jelly email address or photograph them via the app. Jelly digitises every line item, including quantity, SKU, price and tax, and Price Alerts activate immediately. A common margin leak at this stage is stale spreadsheet prices that hide live supplier increases.
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POS integration (Week 2): Connect a supported POS system such as Square, Lightspeed, EPOS Now or Toast in around five minutes. Jelly’s Flash Report then delivers daily GP% calculated from live invoice costs against real sales data. A frequent margin leak here is delivery channel underpricing and unrecorded comps.
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Live menu engineering (Weeks 3–12): Build the Cookbook with yield-adjusted recipes. The Sales Mix report highlights which dishes are most popular and most profitable. Menu prices are reverse-engineered to hit target GP, and a common margin leak emerges when high-volume low-margin dishes quietly subsidise the rest of the menu.
Automated costing platforms tie recipes directly to current ingredient costs from invoices, so when prices change, recipe costs and menu profitability data update automatically without manual spreadsheet edits. The contrast with manual methods is significant. Spreadsheet-based costing requires ongoing manual price updates from invoices, and without those updates, stale prices create false confidence and lead to mispriced menu items.
Real results from Amber and Cairn Lodge
Amber, a Mediterranean restaurant in East London run by Chef-Owner Murat Kilic, has used Jelly since 2020. Before Jelly, volatile supplier pricing and manual invoice work eroded margins. After implementing invoice automation, price-change alerts and real-time recipe costing, Amber now saves £3,000–£4,000 per month, which equates to approximately 68× ROI on the platform cost. Murat Kilic says, “Jelly keeps my business alive.”
Cairn Lodge Hotel in Scotland faced a similar challenge, as ingredient price hikes compressed GP with no real-time visibility. After adopting Jelly, Head Chef Stuart Noble gained live dish costs at his fingertips. Stuart Noble says, “Price hikes were crushing our margins, I felt helpless. With Jelly, every dish cost is up-to-date at my fingertips. We slashed food costs by 5% in a month.”
Both operators followed the same three-phase path of invoice capture first, POS integration second and live menu engineering third. Both saw meaningful GP improvement within 12 weeks, which aligns with Jelly’s platform-wide average of 2 percentage points GP improvement in the first three months.
Frequently Asked Questions
Why must UK restaurants use net-of-VAT revenue for food cost calculations?
VAT collected from customers belongs to HMRC, not the business. Including it in the revenue denominator artificially inflates the GP% figure and understates food cost percentage. The calculation example earlier in this guide shows how this can create a 6-percentage-point gap between apparent and actual GP. Every financial decision, from menu pricing to supplier negotiation and budget forecasting, needs to rely on the net figure to stay accurate.
How long does it take to set up Jelly and see the first results?
Most operators see their first Price Alerts within 24 hours of forwarding their first invoice to their dedicated Jelly email address, or within 24 hours of photographing invoices into the app. Connecting a supported POS system takes around five minutes. Full recipe costing and live GP% on every dish typically follow within the first two weeks. Jelly’s customers consistently report meaningful GP improvements within 12 weeks, with an average of 2 percentage points added to gross margins in the first three months.
What is the difference between food cost percentage and prime cost?
Food cost percentage measures only ingredient costs as a proportion of net food revenue. Prime cost adds labour to the equation and uses the formula (Food Cost + Beverage Cost + Labour Cost) ÷ Net Sales × 100. Prime cost offers a more comprehensive measure of direct operating efficiency because labour and food are the two largest controllable costs in most hospitality operations. A healthy prime cost for casual dining sits below 65% of net revenue. Jelly’s Flash Report and Sales Mix reports give operators the food cost and GP% data needed to monitor their contribution to prime cost in real time.
Can Jelly handle delivery menu pricing separately from dine-in?
Yes. Jelly’s Delivery Menu Creation feature allows operators to duplicate existing menu items and factor in delivery platform commission overheads, typically 25–35%, to create a separate, profitable delivery menu. The GP target is set independently for each channel, so a dish priced correctly for dine-in does not automatically become loss-making on a delivery platform. Sushi Revolution uses this feature to maintain actual gross profits 2–3% higher on average across both dine-in and delivery channels.
How does Jelly compare to using a spreadsheet?
Spreadsheets are free and flexible for short menus, but they require manual price updates every time a supplier invoice arrives. Without those updates, stale prices create false confidence and lead to mispriced dishes. A spreadsheet also cannot alert you when a specific ingredient has increased in price or automatically recalculate every recipe that uses that ingredient. Jelly automates the entire flow. Invoices are scanned, ingredient prices update instantly, every recipe and dish GP% recalculates in real time, and Price Alerts flag changes the moment they occur. What takes 28 minutes per dish in a spreadsheet takes 3 minutes in Jelly, which saves operators 10–20 hours of admin every month.
Next step for your UK kitchen
Static spreadsheets and delayed reports cost UK kitchens 2–5% GP every quarter. Jelly’s live invoice-to-POS workflow delivers accurate food-cost percentage and gross-profit margin in real time at a flat rate of £129 per location per month with no per-user charges.
The fastest way to see the impact on your own numbers is to connect your first supplier invoice and watch the Price Alerts activate. From there, POS integration and live dish costing follow within days, not months.