How to Calculate Pour Cost (And Why 20% Is the Wrong Target)

The first beverage director I worked under handed me a clipboard one Sunday and said “the target is 20%.” Six months later I figured out the target was wrong. Not 20% specifically. The idea that one number could measure a bar program with beer, wine, and spirits all priced differently and pouring differently.

This is the version of pour cost I wish somebody had explained the first time I set a target.

The formulas #

There are two pour cost formulas. Operators use them interchangeably and confuse themselves.

Aggregate pour cost:

Pour cost % = Bar COGS ÷ Bar Sales × 100

This is the P&L version. Same structure as food cost. Useful for tracking the whole bar program against a single number.

Per-drink pour cost:

Drink pour cost = (Bottle cost × Pour oz) ÷ (Usable oz per bottle × Drink price)

This is the recipe version. Tells you the cost of one specific drink. Useful for pricing decisions and spec-sheet work.

A 750mL bottle is 25.4 oz. At a 1.5 oz pour spec, that is 16.9 drinks per bottle. Account for spillage and finish-off-pours (usually 1-2 drinks of waste per bottle), call it 15 servable drinks from a 750mL. A 1.75L bottle (59.2 oz) yields about 38 servable drinks at 1.5 oz pour.

A worked example #

A bottle of well vodka costs you $24 from the distributor. Standard 1.5 oz pour. Sell vodka soda for $9.

• Cost per drink: $24 ÷ 15 servable drinks = $1.60
• Pour cost: $1.60 ÷ $9.00 = 17.8%

Healthy on a well drink.

Same bottle, real-world bartender pour: 1.75 oz (industry-average actual pour, Backbar, Sculpture Hospitality). At 1.75 oz, the same bottle yields 14.5 drinks, minus 1 for spillage, 13.5 servable drinks.

• Real cost per drink: $24 ÷ 13.5 = $1.78
• Real pour cost: $1.78 ÷ $9.00 = 19.8%

A 2-point shift on the spec versus actual gap. Multiplied across 80 well-vodka drinks a week, that is $14.40 of margin disappearing into the over-pour. Multiply by every well bottle on the rail and the number gets serious fast.

Why a single 20% target is operator nonsense #

A 20% blended pour cost target makes sense as a back-of-envelope check. It is wrong as an operational target because the three drink categories pour very differently.

Industry targets by category (Backbar, Provi, BinWise):

• Spirits / liquor: 14-18% (highest margin category)
• Beer (bottle): 24-30%
• Beer (draft): 18-24%
• Wine (BTG): 22-30%
• Wine (bottle service): 28-35%
• Cocktails (blended): 18-22%
• Total beverage program: 18-24%

Run a single 20% target against a bar that does 50% beer / 25% wine / 25% spirits and the math is misleading. Each category’s variance against its own target is more diagnostic than the aggregate. A blended 22% pour cost could be 17% spirits (great), 26% beer (bad), 24% wine (slightly hot) and tell you exactly which category needs work. Or it could be 22% across the board (fine) and tell you nothing actionable.

The 1.5 oz pour myth #

Most bars run a 1.5 oz pour spec. Most bartenders actually pour 1.75-2 oz, especially on well drinks and especially when the spec is enforced by free-pour rather than jigger.

Industry-average actual pour (measured studies):

• Free-pour, untrained: 1.85-2.0 oz on a 1.5 oz spec
• Free-pour, trained: 1.6-1.75 oz on a 1.5 oz spec
• Jiggered: 1.45-1.55 oz on a 1.5 oz spec (slight over from the lip)
• Speed-pour spout, free-pour: 1.65-1.85 oz on a 1.5 oz spec
• Speed-pour with portion control device (Berg, Easybar, etc.): within 0.05 oz of spec

The cost of free-pour: typically 8-15% over-pour, which translates to 1.5-3 points of pour cost above what the spreadsheet says. On a $400K annual beverage program, that is $6,000-$12,000 lost to pour technique.

The fix is jiggers. Not portion-control devices (expensive, kill bar flow). Just jiggers, on the rail, with a manager who checks. The first three weeks are painful because the bartenders complain. The fourth week the pour cost drops 2 points and the complaints stop.

A worked example: when 20% on paper costs you 26% in reality #

The same well vodka example, with everything that can go wrong:

• $24 bottle cost
• 1.5 oz spec → 1.85 oz actual pour (free-pour)
• 25.4 oz bottle ÷ 1.85 oz = 13.7 theoretical drinks
• Minus 1.5 drinks spillage and finish = 12.2 servable
• One free pour per bottle (the bartender’s friend at the end of the night)
• 11.2 paid drinks per bottle
• Real cost per drink: $24 ÷ 11.2 = $2.14
• $9 menu price
• Real pour cost: $2.14 ÷ $9 = 23.8%

The spreadsheet said 17.8%. Reality said 23.8%. The 6-point gap is the sum of over-pour, spillage, and a single free drink per bottle. Multiply by 80 bottles a week and you are looking at $500/week in margin that nobody is tracking.

Variance: where the gap actually lives #

When pour cost runs above the category target, the variance lives in one of six places (in rough order of size):

1. Over-pour from free-pouring. The big one. 60-70% of pour cost over-runs trace here.
2. Comps without manager approval. “Buy-back” culture in bars that comp a drink for every 3 sold. Sometimes a deliberate hospitality move, sometimes loose discipline.
3. Free pours / friend pours / industry-pour. Bartenders pouring their friends $0 drinks. Common, often unreported.
4. Spillage and waste during service. 2-4% of bar volume on a well-run bar, 6-10% on a sloppy bar.
5. Wrong glassware. Pouring a 9 oz wine into a 6 oz spec because the only clean glass is a larger one.
6. Inventory and receiving errors. Bottles that show as received but never made it to the bar (theft at the receiving dock, breakage not recorded).

For each leak in detail, see 5 Ways Bar Pour Cost Actually Leaks.

What this looks like in the calculator #

The liquor pour cost calculator on this site runs both formulas, aggregate (for your weekly tracking) and per-drink (for spec work). It includes spillage adjustment, free-pour over-pour modeling, and benchmarks by category so you can see where each part of the program lands against the right target.

What to do today #

Pull last week’s bar sales by category if your POS supports it. Pull last week’s bar invoices. Calculate pour cost separately for beer, wine, and spirits. Compare against the segment targets above. The category that runs furthest above target is where the leak is. Fix it before averaging out the others.

If your POS doesn’t separate bar sales by category, that is the first fix to make. A bar program without category-level visibility is a bar program operating blind.

Sources: Backbar, BinWise, Provi, Sculpture Hospitality, BevSpot.