One extra glass of wine per guest sounds small, but can increase your annual revenue by thousands of euros. Most restaurant owners focus heavily on food costs while barely tracking beverage performance. Yet that single additional glass can transform your bottom line more than any menu tweak.
The formula for extra beverage revenue
Calculating extra beverage revenue is straightforward, but you need to account for all the variables in play.
💡 Basic formula:
Extra revenue per year = Average wine glass price × Number of covers per year
- Average wine glass price: €6.50
- Covers per year: 100/day × 6 days × 52 weeks = 31,200
Extra revenue: €6.50 × 31,200 = €202,800 per year
Realistic calculation with conversion rate
Not every guest will automatically order that extra glass. You need to factor in a realistic conversion rate.
- Common conversion rate: 40-60% of guests
- With a solid wine list and proper training: up to 70%
- Without beverage focus: often just 25-30%
💡 Realistic calculation:
Assumption: 50% of guests order one extra glass
- 31,200 covers × 50% = 15,600 extra glasses
- 15,600 × €6.50 = €101,400 extra revenue
That's €8,450 extra per month
Impact on your profit margin
Beverages carry a much lower 'pour cost' than food. While food cost typically runs 28-35%, pour cost for wine hovers around 20-25%. From analyzing actual purchasing data across different restaurant types, this margin difference becomes even more pronounced during peak seasons.
⚠️ Note:
Alcoholic beverages fall under 21% VAT, not 9% like food. So factor in higher VAT in your cost price.
💡 Profit calculation:
Glass of wine €6.50 incl. VAT → €5.37 excl. 21% VAT
- Wine cost per glass: €1.30
- Pour cost: (€1.30 / €5.37) × 100 = 24.2%
- Profit margin per glass: €5.37 - €1.30 = €4.07
15,600 extra glasses × €4.07 = €63,492 extra profit per year
Factors that influence the result
Several elements determine how much extra revenue you'll actually capture:
- Season: Summer and holidays boost beverage consumption
- Type of occasion: Business dinners vs. romantic evenings
- Wine list quality: Smart selection increases conversion
- Staff training: Active recommendations make the difference
- Price level: Too expensive scares guests off, too cheap suggests poor quality
Calculate different scenarios
💡 Scenario comparison:
Restaurant with 80 covers/day, 6 days/week = 24,960 guests/year
- Conservative (30% conversion): 7,488 extra glasses = €48,672 revenue
- Average (50% conversion): 12,480 extra glasses = €81,120 revenue
- Excellent (70% conversion): 17,472 extra glasses = €113,568 revenue
Practical tips to stimulate extra beverage revenue
The calculation is one thing, making it happen is another. These tactics actually work:
- Train your staff in wine advice and pairings
- Offer wine by the glass in different price ranges
- Use 'anchor pricing': expensive wine makes mid-range prices attractive
- Create wine-food pairing combinations on your menu
- Offer tastings for new wines
How do you calculate extra beverage revenue? (step by step)
Determine your current figures
Count how many covers you have per day, week, and year. Also calculate your current average beverage price per glass. This forms the basis for your calculation.
Estimate a realistic conversion rate
Determine what percentage of your guests would order that extra glass. Start conservatively with 40-50%, unless you're already actively promoting beverages.
Calculate the impact on revenue and profit
Multiply covers × conversion % × average glass price for extra revenue. Subtract the cost of goods (pour cost) for the profit impact.
✨ Pro tip
Track your wine-by-the-glass sales weekly and identify which bottles move fastest during your first 30 days of service. Replace slow movers immediately - nothing kills momentum like offering a wine that's been open too long.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
Was this article helpful?
Frequently asked questions
What's a realistic conversion rate for extra beverages?
For most restaurants, a healthy conversion rate sits between 40-60%. With a well-curated wine list and trained staff, you can push up to 70%. Without beverage focus, you'll often struggle to hit 30%.
How do I calculate the pour cost of wine?
Pour cost = (cost per glass / selling price excl. VAT) × 100. For wine, this typically runs 20-25%. Remember that alcoholic beverages carry 21% VAT, not the 9% you pay on food.
Should I factor in seasonal differences?
Absolutely, that gives you a more realistic picture. Summer and December often see 20-30% higher beverage consumption. Calculate using your full-year average for reliable forecasting.
What if my wine list prices are too high for extra sales?
Offer wines across different price points. A range from €4.50 to €12.00 per glass gives every guest a comfortable option. Mid-range prices (€6-8) typically convert best.
How do I motivate staff to sell more beverages?
Train them in basic wine knowledge and food-wine pairings. Consider small bonuses per extra bottle or glass sold. Most importantly, let them taste the wines so they can give authentic recommendations.
Does the type of cuisine affect beverage conversion rates?
Yes, significantly. Italian and French restaurants typically see higher wine conversion rates than Asian cuisines. Steakhouses often hit 60-70% conversion, while casual dining might struggle to reach 40%.
What's the minimum wine selection needed for effective upselling?
You need at least 8-12 wines by the glass to create choice without overwhelming guests. Include 2-3 options each in white, red, rosé, and sparkling categories across different price points.
📚 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.
Optimize your wine list and beverage packages
From wine by the glass to cocktail packages — KitchenNmbrs calculates the cost price and margin of every drink on your menu. Try it free for 14 days.
Start free trial →