Last month, I watched three restaurants struggle with their sparkling wine pricing—all making the same costly mistake. They calculated margins using only the bottle's purchase price, ignoring waste, pouring losses, and VAT complications. Here's how to calculate your actual margin on bubbles per glass.
Why calculating margin per glass matters
That €40 champagne bottle seems profitable when you pour 6 glasses at €12 each. But it's misleading. You've got to account for waste from uncorking, customer tastings, and those dregs you can't serve.
⚠️ Note:
Alcoholic beverages carry 21% VAT, not the 9% applied to food. This dramatically impacts your margin calculations.
The essential formula for per-glass margins
Accurate margin calculations need this data:
- Purchase price per bottle (VAT included)
- Actual glasses per bottle (accounting for waste)
- Selling price per glass (with 21% VAT)
- Additional costs (cork removal, foil, tastings)
Use this formula: Margin % = ((Selling price excl. VAT - Cost per glass) / Selling price excl. VAT) × 100
💡 Champagne example:
Champagne bottle €48 purchase, €15 per glass selling price:
- Purchase price: €48.00
- Glasses per bottle: 5 (realistic with waste)
- Cost price per glass: €48 ÷ 5 = €9.60
- Selling price excl. 21% VAT: €15 ÷ 1.21 = €12.40
Margin: ((€12.40 - €9.60) ÷ €12.40) × 100 = 22.6%
Factor in realistic pouring losses
Standard champagne or prosecco bottles (75cl) rarely yield 6 full glasses. From analyzing actual purchasing data across different restaurant types, most establishments get 5 to 5.5 glasses due to pouring waste, tastings, and sediment.
💡 Prosecco example:
Prosecco bottle €12 purchase, €8 per glass selling price:
- Purchase price: €12.00
- Glasses per bottle: 5.5 (with waste)
- Cost price per glass: €12 ÷ 5.5 = €2.18
- Selling price excl. 21% VAT: €8 ÷ 1.21 = €6.61
Margin: ((€6.61 - €2.18) ÷ €6.61) × 100 = 67.0%
Typical margins for sparkling wines
Alcoholic beverages work on different margin structures than food:
- Champagne: 20-35% margin (lower due to premium purchase prices)
- Prosecco: 50-70% margin (higher due to affordable sourcing)
- Cava/Crémant: 40-60% margin (middle tier)
These margins run lower than beer or wine, but absolute profit per glass often beats them due to higher selling prices.
⚠️ Note:
Champagne isn't just about margins—it's about prestige and experience. Lower margins can be justified if they enhance your overall wine program.
Hidden costs that erode margins
Sparkling wines carry additional costs that impact profitability:
- Uncorking spillage: foam often escapes during opening
- Customer tastings: some guests request samples before ordering
- Returns: dissatisfied customers reject the selection
- Breakage: glasses shatter, bottles can slip
Build in an extra 5-10% for these expenses. A €9.60 per-glass cost becomes €10.08-€10.56 after adjustments.
Seasonal pricing fluctuations
Sparkling wine demand creates seasonal margin pressures:
- December: champagne costs spike due to holiday demand
- Summer: prosecco popularity increases, driving volume sales
- Valentine's/New Year: customers accept premium pricing
Adjust your menu prices during peak periods, or temporarily accept thinner margins for increased volume.
How do you calculate the margin on champagne per glass? (step by step)
Determine your real cost price per glass
Divide the purchase price of the bottle by the realistic number of glasses (usually 5-5.5 instead of 6). Add 5-10% here for pouring waste, tastings, and leftovers.
Calculate your selling price excluding VAT
Divide your menu price by 1.21 to get the price excluding 21% VAT. This is crucial because alcoholic beverages have 21% VAT, not 9% like food.
Calculate your margin percentage
Subtract the cost price per glass from the selling price excl. VAT, divide by the selling price excl. VAT and multiply by 100. For champagne 20-35% is normal, for prosecco 50-70%.
✨ Pro tip
Track your champagne margins weekly during December's 4-week peak season. Suppliers often raise prices without notice, especially for Dom Pérignon and Krug labels.
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
How many glasses do I get from a bottle of champagne?
Realistically 5 to 5.5 glasses of 12.5cl from a 75cl bottle. Don't count on 6 glasses due to pouring waste, tastings, and leftovers you can't pour.
Why is my champagne margin so low compared to beer?
Champagne has a high purchase price but customers won't accept a proportional selling price. Margins of 20-35% are normal, compared to 70-80% for beer. The absolute profit per glass can still be higher though.
Should I calculate margins with or without VAT?
Always calculate excluding VAT for accurate margins. Alcoholic beverages have 21% VAT, so divide your menu price by 1.21 to get the VAT-exclusive price for your calculation.
📚 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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