title: "What Is a Par Level and Why Most Bars Get It Wrong" description: "Par levels determine when and how much to reorder. Learn how to calculate them correctly using sales velocity — not guesswork." date: "2026-03-06" author: "BevSync Team" category: "Education" tags: ["par levels", "inventory", "ordering", "glossary"]
A par level is the target quantity of a product you should have on hand at any given time. When your stock falls below par, it's time to reorder. When it's above par, you may be overstocked.
Getting par levels right is the difference between a bar that always has what customers want and one that's constantly running out of popular products or sitting on dead stock.
Most bars get par levels wrong because they set them based on intuition instead of data.
The Par Level Formula
The standard par level calculation is:
Par Level = Average Daily Usage × (Delivery Frequency + Safety Stock Days)
Let's break this down.
Average Daily Usage
This is how much of a product you sell per day, measured in bottles (or fractional bottles). If you sell 3 bottles of Tito's per week, your average daily usage is 0.43 bottles/day.
Where most bars get it wrong: They estimate usage from memory instead of calculating it from POS data or inventory depletion. Estimates are typically off by 15–30%.
Delivery Frequency
How many days between deliveries. If your distributor delivers every 7 days, your par level needs to cover at least 7 days of usage.
Safety Stock
A buffer for unexpected spikes in demand. For most bar products, 2–3 days of safety stock is sufficient. For products with longer lead times or inconsistent delivery, increase this.
Example Calculation
Product: Tito's Vodka Average daily usage: 0.43 bottles/day (3 bottles/week from POS data) Delivery frequency: 7 days Safety stock: 2 days
Par Level = 0.43 × (7 + 2) = 3.87 → Round up to 4 bottles
This means you should always have at least 4 bottles of Tito's on your shelf. When stock drops below 4, place an order.
Why Guessing Doesn't Work
Most bars set par levels by looking at the shelf and ordering "what seems right." This approach has three problems:
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Stockouts on popular products. Without data, you underestimate how fast your best sellers move — especially during busy weekends or events.
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Overstock on slow movers. You order the same amount of everything, regardless of actual sales velocity. This ties up capital in products that sit for weeks.
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No seasonal adjustment. Consumption patterns change with seasons, events, and menu changes. A static par level set in January is wrong by March.
Dynamic Par Levels
The best approach is dynamic par levels that automatically adjust based on recent sales velocity. Instead of setting a fixed number, you let the data dictate:
Dynamic Par = Rolling 4-Week Average Daily Usage × (Delivery Days + Safety Days)
This captures seasonal trends and menu changes automatically. When a product starts selling faster (e.g., rosé in summer), the par level increases. When it slows down, the par level decreases.
Reorder Quantities
Par levels tell you when to order. Reorder quantity tells you how much:
Reorder Quantity = Par Level − Current Stock + Expected Usage Before Delivery
This should also be rounded up to the nearest case size to minimize split case fees. A split case fee of $3–$5 per case adds up quickly if you're ordering partial cases regularly.
How BevSync Handles Par Levels
BevSync calculates par levels automatically using your POS sales data (if connected) or inventory depletion history. It:
- Calculates average daily usage from actual sales, not estimates
- Adjusts for delivery frequency per distributor
- Generates reorder suggestions rounded to case size
- Flags products below par and products significantly above par (potential overstock)
- Updates dynamically as your sales patterns change
You can also set par levels manually if you prefer, and BevSync will alert you when stock drops below your specified minimum.
Want automatic par level management? Try BevSync free — setup takes under 15 minutes.