Picture this scenario: you're catering a corporate event with an open bar, and halfway through the night, you realize you've miscalculated beverage costs. Your profit margins are evaporating faster than the ice in those cocktails. Understanding how to calculate total beverage costs accurately prevents these costly surprises.
What are beverage costs for open bar?
Beverage costs for open bar extend far beyond the sticker price of drinks. You'll need to account for:
- Purchase price of alcoholic beverages
- Purchase price of non-alcoholic beverages
- Loss from spilling and over-pouring
- Garnish and mixers (lemons, tonic, etc.)
- Ice and other supplies
Calculate consumption per person
Everything starts with how much each guest drinks on average. This varies dramatically based on several factors:
💡 Example average consumption:
Corporate reception 3 hours, 50 people:
- Beer: 2.5 glasses per person = 125 glasses
- Wine: 1.5 glasses per person = 75 glasses
- Soft drink: 1 glass per person = 50 glasses
- Water: 0.5 glass per person = 25 glasses
From analyzing actual purchasing data across different restaurant types, here are reliable guidelines per person for 3-4 hours:
- Business events: 2-3 alcoholic drinks
- Weddings/parties: 4-6 alcoholic drinks
- Lunch events: 1-2 alcoholic drinks
- Non-alcoholic: always 1-2 per person in addition
Purchase prices and units
Calculate per glass, not per bottle. This approach gives you precise cost per drink:
💡 Example purchase prices per glass:
- Beer (0.25L): €0.85 per glass
- House wine (0.15L): €1.20 per glass
- Soft drink (0.20L): €0.45 per glass
- Water (0.20L): €0.15 per glass
⚠️ Note:
Alcoholic beverages carry 21% VAT, not 9%. Always calculate with the correct VAT for your cost price.
Include additional costs
Don't overlook these costs in your calculation:
- Loss: 5-10% extra for spilling and over-pouring
- Garnish: lemons, olives, ice cubes
- Mixers: tonic, cola, juices for cocktails
- Materials: glasses (if you provide them)
- Staff: bartender costs
Total calculation open bar
The formula for your total beverage costs:
Total beverage costs = (Number of people × Consumption per person × Cost price per glass) + Loss + Additional costs
💡 Example calculation:
Corporate reception 50 people, 3 hours:
- 125 beers × €0.85 = €106.25
- 75 wines × €1.20 = €90.00
- 75 soft drinks/water × €0.30 = €22.50
- Loss 8%: €17.50
- Garnish and ice: €25.00
Total beverage costs: €261.25 = €5.23 per person
Profit margin and selling price
For catering, the standard margin on beverages runs between 60-75%. If your beverage costs are €5.23 per person:
- At 65% margin: €5.23 / 0.35 = €14.94 per person
- At 70% margin: €5.23 / 0.30 = €17.43 per person
Remember to calculate 9% VAT on the selling price (on-site catering).
⚠️ Note:
Make clear agreements beforehand about the duration of the open bar. Each additional hour means 20-30% more consumption.
How do you calculate beverage costs for open bar? (step by step)
Determine consumption per person
Calculate how many glasses each guest drinks on average based on event type and duration. Use 2-3 alcoholic drinks per person for business events, 4-6 for parties. Always add 1-2 non-alcoholic beverages per person.
Calculate purchase costs per glass
Divide the purchase price per bottle by the number of glasses you get from it. A bottle of wine (0.75L) yields 5 glasses of 0.15L. A crate of beer (24 bottles) yields 24 glasses. Calculate with the correct VAT: 21% on alcohol.
Add loss and additional costs
Calculate 5-10% extra for spilling and pouring over. Add garnish, mixers, ice and any material costs. Multiply the number of people by consumption per person and cost price per glass, plus all additional costs.
✨ Pro tip
Track actual consumption for the first 8-12 events you cater, noting event type and duration. You'll spot patterns that help you estimate much more accurately and avoid costly over- or under-ordering.
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 much does a person drink on average at an open bar?
This depends on the type of event and duration. At business events expect 2-3 alcoholic drinks per person, at parties 4-6. Always add 1-2 non-alcoholic beverages. A 3-hour reception has different consumption than a 6-hour wedding.
Should I include VAT in my beverage cost calculation?
Yes, but pay attention to which VAT rate applies. Alcoholic beverages have 21% VAT, non-alcoholic 9%. For your cost price calculation, you calculate with purchase prices including VAT. On your selling price to the customer, an additional 9% VAT applies (on-site catering).
How much loss should I calculate for an open bar?
Calculate 5-10% extra for spilling, over-pouring and unfinished glasses. With inexperienced bartenders or busy events, this can go up to 15%. It's better to buy slightly too much than to run short during service.
What is a realistic margin on beverages in catering?
Standard margins range between 60-75% on beverages. This is higher than on food because beverages have longer shelf life and require less labor. At €5 beverage costs per person, you can charge €14-20 per person depending on your desired margin.
📚 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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