Restaurant sales can look strong while profitability tells a completely different story. That is why one of the most important numbers for restaurant owners and operators to understand is prime cost. Restaurant prime cost combines your two largest controllable expenses—cost of goods sold and labor—into one number.
Tracking restaurant prime cost consistently can help operators identify rising costs before they consume the bottom line. And the sooner you see the problem, the more time you have to do something about it.
Restaurant prime cost is the combined cost of:
Cost of Goods Sold + Total Labor Cost
Cost of goods sold, commonly referred to as COGS, typically includes the food, beverages, and other products used to generate restaurant sales.
Total labor cost may include:
Together, food and labor generally represent the largest portion of a restaurant's controllable operating expenses.
That makes prime cost one of the most important metrics restaurant operators can monitor.
The basic restaurant prime cost formula is:
Prime Cost = Cost of Goods Sold + Total Labor Cost
To calculate prime cost as a percentage of sales:
Prime Cost Percentage = Prime Cost ÷ Total Sales × 100
For example, imagine a restaurant generates $100,000 in sales during the month.
Its costs are:
The restaurant's prime cost would be:
$31,000 + $30,000 = $61,000
The prime cost percentage would be:
$61,000 ÷ $100,000 = 61%
That means 61 cents of every sales dollar is being used for food, beverage, and labor before the restaurant pays expenses such as rent, utilities, insurance, marketing, maintenance, and other overhead.
There is no single perfect prime cost percentage for every restaurant.
Concept type, service model, menu, staffing structure, location, average check, and other factors all affect what a healthy percentage looks like.
Many restaurant operators use a range of approximately 60% to 65% of sales as a general reference point.
Some highly efficient concepts may operate lower, while others may naturally operate higher because of their business model.
The more important question is not simply:
"Is my prime cost good?"
It is:
"Is my prime cost where it should be for my restaurant, and is it moving in the right direction?"
For example, a restaurant operating consistently at 64% may be performing normally for its concept. But if that same restaurant suddenly jumps to 68%, something may have changed that requires attention. Trends matter.
One of the biggest challenges with a traditional monthly P&L is timing.
Imagine discovering after the month closes that food cost increased significantly during the second week of the month.
By the time you see the result, the opportunity to correct that month's performance is already gone.
Restaurant operators need visibility while there is still time to react.
If food cost begins climbing, operators may need to investigate:
If labor cost begins climbing, operators may need to examine:
Seeing these changes during the month gives managers an opportunity to respond rather than simply explain the results afterward.
Restaurants often manage food cost and labor cost separately.
Operationally, that makes sense.
However, focusing on only one number can sometimes create the wrong conclusion.
For example, a restaurant might aggressively reduce labor to hit a labor target.
But if that decision causes slower service, poor execution, increased comps, or lost sales, the restaurant may not actually become more profitable.
The same principle applies to food cost.
A restaurant could lower ingredient quality to reduce food cost, but if the change damages the guest experience, the savings may ultimately cost the business more.
Prime cost encourages restaurant operators to look at the relationship between their two largest controllable costs instead of managing each number in isolation.
The goal is not simply to cut costs.
The goal is to operate more profitably.
1. Track Actual Results Against a Budget
A percentage means much more when there is something to compare it against.
Restaurant managers should know their expected food cost, labor cost, and prime cost percentages before the month begins.
Actual results can then be measured against those targets throughout the month.
Instead of simply asking:
"How did we do?"
Managers can ask:
"Where are we compared with where we planned to be?"
That creates a much more actionable conversation.
2. Review Food Cost Frequently
Food cost can change quickly.
Ingredient pricing, waste, portions, purchasing, inventory, and menu mix can all affect results.
Waiting until the end of the month to review food cost can allow a small problem to become a significant one.
Frequent monitoring makes it easier to identify unusual movement and investigate the cause.
3. Manage Labor Based on Sales
Restaurant schedules should reflect the sales the business realistically expects to generate.
If projected sales change, labor plans may need to change with them.
Managers who can see labor performance alongside sales have a clearer picture of whether the restaurant is staffed appropriately.
4. Watch Overtime Closely
A few additional overtime hours may not look significant when viewed individually.
Across several employees and multiple weeks, however, overtime can create a meaningful increase in labor cost.
Tracking labor throughout the period allows managers to identify those trends earlier.
5. Improve Invoice Visibility
Invoices play an important role in understanding actual restaurant costs.
If invoice information is delayed, missing, or difficult to organize, operators may be working with incomplete cost information.
A better invoice process helps provide a clearer picture of purchasing and food cost throughout the month.
6. Give Managers Access to the Numbers They Can Influence
Restaurant managers cannot improve a number they never see.
Giving operators visibility into food cost, labor cost, sales, budgets, and profitability helps connect daily operational decisions with financial results.
That is how managers begin thinking more like operators.
Knowing that your prime cost was 64% last month is useful.
Knowing during the current month that prime cost is trending three points above budget is far more valuable.
The difference is timing.
Restaurant financial reporting should help operators answer questions such as:
Those are management questions, not simply accounting questions.
FobeSoft gives restaurant operators clearer visibility into their financial performance throughout the month.
By bringing important operational and financial information together, restaurant owners and managers can monitor metrics such as:
Instead of waiting for a traditional month-end P&L to understand what happened, FobeSoft helps operators see what is happening while there is still time to make adjustments.
That visibility becomes even more valuable for restaurant groups managing multiple locations.
Leadership can quickly identify which stores are performing well and which locations may require additional attention.
Calculating restaurant prime cost is relatively simple.
Managing it is where the real work begins.
A restaurant's numbers should help management make better decisions about purchasing, scheduling, pricing, waste, productivity, and operations.
The most useful financial information is not simply accurate.
It is actionable and available in time to make a difference.
FobeSoft helps restaurant operators move from looking backward at their financial results to proactively managing them throughout the month.
Food cost, labor cost, and prime cost can change quickly.
The earlier restaurant operators can see those changes, the earlier they can respond.
FobeSoft gives restaurant owners and managers a clearer picture of their numbers throughout the month so they can make better decisions while there is still time to affect the outcome.
Restaurant prime cost is the combined total of cost of goods sold and labor costs. These are typically two of the largest controllable expense categories in a restaurant.
The formula is:
To calculate prime cost percentage:
There is no universal target because restaurant concepts have different cost structures. Many operators use approximately 60% to 65% as a general reference range and then establish targets based on their specific concept, menu, service model, and financial goals.
Restaurants benefit from reviewing food cost, labor cost, and prime cost frequently enough to make changes during the operating period.
Weekly or more frequent visibility can be considerably more actionable than waiting for a completed month-end P&L.
Food and labor are two of the largest expenses restaurant operators can actively manage.
Tracking them together helps operators understand whether those costs are consuming too much of their sales and potentially reducing profitability.
From concept developer and restaurant general manager, to corporate chef and marketing director, Murphy has been the lead executive in a number of the country’s most prominent restaurants and bars. Connect with Geordy on geo@cypresshospitalitygroup.com
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