Last month, a restaurant owner watched his €2,000 profit vanish when wedding guests consumed twice the expected alcohol at his €25 open bar. Fixed-price unlimited drinking sounds straightforward, but poor calculations destroy margins fast. You need precise risk assessment before offering any open bar deal.
What is an open bar arrangement?
An open bar means guests pay one fixed price (like €25 per person for 3 hours) and drink unlimited from your selected beverages. The danger: when guests consume beyond your estimates, profits disappear.
Success depends on pricing that stays profitable even when guests drink heavily.
Calculate your average consumption per guest
Begin with your venue's actual data. What's the real hourly consumption per guest?
💡 Example:
Friday evening analysis: 100 guests over 3 hours:
- Beer: 2.3 glasses per guest hourly
- Wine: 1.8 glasses per guest hourly
- Soft drinks: 0.5 glasses per guest hourly
Total: 4.6 drinks per guest each hour
Remember: consumption changes dramatically based on your crowd, timing, and event type. Corporate lunches differ vastly from wedding receptions.
Calculate your pour cost per arrangement
Pour cost works like food cost but for beverages. Profitable arrangements require pour costs under 25%.
💡 Calculation:
€30 per person open bar (3 hours), projected consumption:
- 7 beers at €0.85 cost = €5.95
- 5 wines at €1.20 cost = €6.00
- 2 soft drinks at €0.30 cost = €0.60
Total beverage cost: €12.55
Pour cost: €12.55 / €24.79 (excl. 21% VAT) = 50.6%
That's financially disastrous! A 50% pour cost guarantees losses. You're targeting 25% maximum.
⚠️ Note:
Alcoholic drinks carry 21% VAT, not 9%. Always calculate excluding VAT: €30 becomes €24.79 excluding tax.
Limit your risk with smart choices
Most kitchen managers discover too late that beverage selection dramatically impacts profitability. Make your arrangement predictable through strategic choices:
- Restricted selection: 2 beer types, 2 wines, 3 soft drinks maximum
- House brands only: skip premium labels and expensive imports
- Time boundaries: 3-hour limit, then regular pricing kicks in
- No spirits: liquor costs destroy margins quickly
Calculate your break-even point
What's the maximum drink count per guest before you start bleeding money?
💡 Break-even calculation:
€35 per person open bar (excl. VAT: €28.93)
Target pour cost: 25%
Drink budget: €28.93 × 0.25 = €7.23
At €1.00 average cost per drink = 7 drinks maximum
Beyond 7 drinks in 3 hours, you're losing money. That's roughly 2.3 drinks hourly - achievable for many guests.
Monitor during the event
Track consumption actively throughout your open bar:
- Count empty bottles and kegs hourly
- Compare against your projections
- Adjust future pricing based on results
⚠️ Note:
Some groups consume far above average. Build 20% safety margin into all calculations.
Alternatives to open bar
If full open bars feel too risky, try these controlled options:
- Drink tickets: guests get 5 vouchers, pay regular price after
- Happy hour rates: discounted pricing first 2 hours only
- Consumption caps: open bar until €20 per person, then individual tabs
- Beer and wine exclusive: eliminate spirits and premium options
These alternatives provide better cost control while limiting financial exposure.
How do you calculate a profitable open bar arrangement?
Analyze your current consumption data
Review your cash register data from comparable events. Count how many drinks guests consume on average per hour. Break this down by drink type (beer, wine, soft drinks) for an accurate estimate.
Calculate your maximum cost of goods
Determine your desired pour cost (maximum 25%). Multiply your selling price excluding VAT by 0.25. This is the maximum amount you can spend on drink cost of goods per guest.
Assemble your drink selection
Choose drinks that fit within your budget. Use house wines, standard beers, and no premium brands. Limit your selection to 2-3 options per category for better cost control.
Test and monitor your arrangement
Try your open bar first with a smaller group. Count the consumption afterward and compare with your estimate. Adjust your price or selection based on actual results.
✨ Pro tip
Count your empty bottles every 90 minutes during open bar events. If consumption exceeds 2.5 drinks per guest per hour, you're likely operating at a loss and should adjust future pricing immediately.
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
What is a safe pour cost for an open bar?
Target below 25% pour cost for profitable arrangements. Anything above 30% risks serious losses, especially with heavy-drinking groups.
Should I offer premium drinks in an open bar?
Never include premium brands in open bars. House wines and standard beers keep costs manageable while maintaining guest satisfaction.
How do I prevent guests from drinking too much at an open bar?
Set strict time limits (3 hours maximum) and exclude strong spirits entirely. Monitor hourly consumption and ensure substantial food offerings to slow alcohol absorption.
Can I adjust course during an open bar if things get out of hand?
Absolutely - track consumption each hour against your budget. If guests exceed projections significantly, modify your selection or time limits for future events based on actual data.
📚 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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