Menu revisions can dramatically boost restaurant profitability. Most establishments miss out on thousands in potential revenue due to underpriced dishes and inflated ingredient costs. Here's the exact calculation method for measuring total margin profit from menu changes.
What is margin profit in menu revision?
Margin profit represents the difference between your previous and updated profit margin per dish, multiplied by sales frequency. During menu revision, you analyze every dish and calculate additional profit generated through price adjustments or dish replacements.
💡 Example:
You sell pasta at €18.50 (incl. 9% VAT) with ingredient costs of €6.50.
- Original selling price excl. VAT: €16.97
- Original margin: €16.97 - €6.50 = €10.47
- After revision: €21.50 (€19.72 excl. VAT)
- Updated margin: €19.72 - €6.50 = €13.22
Margin profit per portion: €13.22 - €10.47 = €2.75
Gather all necessary data
Accurate calculations require specific information for each dish:
- Current selling price (including 9% VAT from your menu)
- Ingredient costs (all costs that go on the plate)
- Sales volume per week/month (from your POS system)
- Proposed new prices after revision
Missing these figures makes reliable calculations impossible. Many operators estimate these numbers, but that creates flawed decision-making.
⚠️ Note:
Always calculate using prices excluding VAT for margin calculations. Menu prices include 9% VAT for food items.
Calculate margin profit per dish
For every dish, calculate the difference between old and new profit margins. Apply this formula:
Margin profit per portion = (New selling price excl. VAT - Ingredient costs) - (Original selling price excl. VAT - Ingredient costs)
💡 Example calculation:
Steak with fries:
- Original price: €28.00 incl. VAT (€25.69 excl. VAT)
- Revised price: €32.00 incl. VAT (€29.36 excl. VAT)
- Ingredient costs: €9.50
Original margin: €25.69 - €9.50 = €16.19
Revised margin: €29.36 - €9.50 = €19.86
Margin profit: €19.86 - €16.19 = €3.67 per portion
Multiply by sales volume
Next, multiply margin profit per portion by dish sales frequency. This reveals total additional profit per period.
Total margin profit per dish = Margin profit per portion × Sales volume per period
Use actual figures from your POS system. Average the last 3 months for dependable estimates - that's the kind of thing you only learn after closing your first month at a loss.
💡 Calculation:
The steak from the previous example sells 40 times weekly:
- Margin profit per portion: €3.67
- Weekly sales: 40 portions
- Additional weekly profit: €3.67 × 40 = €146.80
- Additional monthly profit: €146.80 × 4.3 = €631.24
- Additional annual profit: €631.24 × 12 = €7,574.88
Add all dishes together
Repeat this calculation for every dish you're revising. Then sum all margin profits for total impact.
Build a summary including:
- Dish name
- Margin profit per portion
- Monthly sales
- Total monthly margin profit
This provides insight into which adjustments generate maximum profit and helps prioritize changes.
⚠️ Note:
Factor in potential sales decline from price increases. Rule of thumb: 10% price increases typically reduce sales by 5-10%.
Use tools for automatic calculations
Manual calculations consume significant time and invite errors. Food cost calculators like KitchenNmbrs instantly show how price adjustments impact profit margins. You input new prices and the system automatically calculates profitability differences per dish.
This enables testing multiple scenarios before finalizing new menu decisions.
How do you calculate margin profit from menu revision? (step by step)
Gather current data per dish
Note for each dish: current selling price, ingredient costs and number of sales per month from your POS system. These figures are the basis for your calculation.
Calculate old and new profit margin
Subtract ingredient costs from both prices (excl. VAT). The difference between new and old margin is your margin profit per portion.
Multiply by sales volume
Multiply the margin profit per portion by the number of sales per month. Add all dishes together for the total margin profit.
✨ Pro tip
Test your revised pricing on 3-4 high-volume dishes for exactly 6 weeks before rolling out full menu changes. This reveals actual sales impact and profit increases, giving you concrete data for the complete revision.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Do I need to include all dishes in the calculation?
Focus initially on your 10 best-selling dishes. They typically represent 70-80% of revenue and create the biggest impact when adjusted.
How do I prevent customers from leaving with price increases?
Increase prices gradually (maximum 10% at once) and communicate added value like premium ingredients or larger portions. Test with select dishes first.
What if my competitor maintains lower prices?
Evaluate your complete value proposition: atmosphere, service quality, food quality. Customers pay premium prices for perceived value. Emphasize your unique selling points.
Can I calculate this for beverages too?
Yes, apply the same method but remember: alcoholic beverages carry 21% VAT instead of 9%. The calculation formula stays identical.
⚠️ EU Regulation 1169/2011 — Allergen Information — https://eur-lex.europa.eu/eli/reg/2011/1169/oj
The allergen information on this page is based on EU Regulation 1169/2011. Recipes and ingredients may vary by supplier. Always verify current allergen information with your supplier and communicate this correctly to your guests. KitchenNmbrs is not liable for allergic reactions.
In the UK, the FSA enforces allergen regulations under the Food Information Regulations 2014.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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