Prime Cost for Restaurants: What Owners Need to Know
Restaurants can generate strong sales and still struggle to make money.
Revenue alone does not tell you whether the business is operating efficiently. Two of the largest costs in most restaurants are food and beverage costs and labor costs. Together, those costs are commonly referred to as prime cost.
Prime cost is one of the most useful numbers a restaurant owner can monitor because it shows how much of each sales dollar is being consumed by the costs most directly tied to producing and serving what the restaurant sells.
What Is Prime Cost?
At its simplest:
Prime Cost = Cost of Goods Sold + Labor Costs
For a restaurant, cost of goods sold generally includes the food and beverages consumed in generating sales.
Labor costs may include:
Wages
Salaries
Employer payroll taxes
Employee benefits
Other payroll-related costs
The exact calculation can vary depending on how a restaurant structures its internal reporting.
What matters is consistency.
If you calculate prime cost one way in January and differently in February, it becomes much harder to determine whether your restaurant is actually improving.
The basic question prime cost helps answer is:
How much does it cost the restaurant to produce and serve what it sells?
A Simple Prime Cost Example
Assume a restaurant has the following results for the month:
Sales: $100,000
Food and beverage cost: $30,000
Labor cost: $32,000
Prime cost would be:
$30,000 + $32,000 = $62,000
The restaurant's prime cost percentage would be:
$62,000 ÷ $100,000 = 62%
That means 62 cents of every sales dollar is being used for food, beverages, and labor before the restaurant pays expenses such as:
Rent
Utilities
Insurance
Credit card processing fees
Software
Repairs
Advertising
Professional fees
Interest
Taxes
In this example, the restaurant's 62% prime cost is slightly above the 55%–60% range generally used as a restaurant benchmark.
That does not automatically mean something is wrong, but it gives the owner a reason to look more closely at food costs, labor costs, pricing, and the restaurant's overall operating model.
What Is a Good Prime Cost Percentage?
Restaurants generally aim to keep prime cost around 55% to 60% of sales.
At 60%, approximately 60 cents of every sales dollar is going toward food, beverages, and labor.
The remaining 40 cents still needs to cover everything else required to operate the restaurant, including rent, utilities, merchant fees, insurance, repairs, marketing, technology, taxes, and ultimately profit.
The appropriate prime cost for a particular restaurant can vary based on its:
Concept
Menu
Service model
Location
Pricing
Labor requirements
So the 55%–60% range should be viewed as a benchmark rather than an absolute rule.
The more useful question is often:
How is our prime cost changing, and what is driving that change?
Managing Food and Beverage Costs
Food and beverage costs can be influenced by several parts of the restaurant's operation.
Owners may want to evaluate:
Purchasing practices
Vendor pricing
Inventory controls
Product handling
Waste and spoilage
Portion sizes
Menu pricing
Menu mix
An increase in food cost does not necessarily mean the restaurant is being poorly managed.
Ingredient prices change. Suppliers raise prices. Menu mix changes. Customers order different products.
The important part is identifying what changed and deciding whether the restaurant needs to respond.
Managing Labor Costs
Labor is the other major component of prime cost.
Restaurant owners may want to monitor:
Staffing levels
Scheduling by daypart
Overtime
Employee training
Employee productivity
Management coverage
Payroll taxes
Employee benefits
Better labor management does not necessarily mean simply cutting hours.
The goal is to align staffing with what the restaurant actually needs to serve customers effectively.
When Prime Cost Is Too High
If prime cost is consistently too high, a restaurant generally has two broad options:
Reduce the costs required to generate sales
and/or
Increase the sales generated from those costs.
Depending on the restaurant, that might involve:
Reducing food waste
Improving purchasing
Adjusting staffing
Reducing unnecessary overtime
Revisiting portion sizes
Changing menu prices
Promoting higher-margin products
Increasing average check size
Improving customer traffic
The purpose of monitoring prime cost is not simply to hit a particular percentage.
It is to identify where food and labor costs are putting pressure on profitability and determine what management can actually do about it.
Why Prime Cost Matters
Food and labor are closely connected to restaurant operations.
If you sell more meals, you generally need more ingredients.
If the restaurant gets busier, you may need more cooks, servers, bartenders, or support staff.
That makes these costs particularly important to monitor.
A restaurant can have strong sales and still produce disappointing results if food and labor costs are consuming too much of that revenue.
Prime cost gives owners a quick way to evaluate how efficiently those major costs are being managed.
Prime Cost Can Help Identify Problems Earlier
Suppose your restaurant's sales are increasing.
That sounds like good news.
But what if food costs are increasing even faster?
Or labor costs are rising because the restaurant is consistently overstaffed during slower periods?
If you only look at revenue, those problems may not be obvious.
Changes in prime cost can prompt restaurant owners to investigate issues such as:
Rising ingredient prices
Food waste
Portion-control problems
Inventory loss
Overtime
Overstaffing
Scheduling inefficiencies
Changes in menu mix
Increased payroll costs
Purchasing practices
The key is not merely discovering that prime cost increased.
It is determining why it increased.
Understanding the Costs Behind Prime Cost
Prime cost is only as useful as the numbers going into the calculation.
That makes consistent food-cost and labor-cost accounting important.
Food Cost Is More Than What You Pay Vendors
A common mistake is assuming food cost simply equals the amount paid to vendors during a particular month.
That does not necessarily reflect the cost of the food actually consumed.
A more complete cost-of-goods calculation may consider:
**Beginning Inventory
Purchases
− Ending Inventory
= Cost of Goods Sold**
For example:
Beginning inventory: $20,000
Purchases: $35,000
Ending inventory: $22,000
Cost of goods sold would be:
$20,000 + $35,000 − $22,000 = $33,000
Consistent inventory accounting can therefore make the prime-cost calculation more meaningful.
Labor Cost Needs a Consistent Definition Too
Labor can be calculated differently depending on the restaurant.
Some businesses may look primarily at wages.
Others may include items such as:
Employer payroll taxes
Health insurance
Retirement contributions
Workers' compensation
Bonuses
Other employee benefits
For internal reporting, the important point is to define the calculation and apply it consistently.
If employer payroll taxes are included one month but excluded the next, comparisons between periods become much less meaningful.
Using Prime Cost to Manage Your Restaurant
Prime cost becomes particularly useful when it is reviewed over time and broken into its individual components.
Prime Cost Should Be Reviewed as a Percentage of Sales
The dollar amount matters, but the percentage provides important context.
Suppose prime cost increases from $50,000 to $60,000.
That sounds negative.
But if sales increased from $80,000 to $110,000 during the same period, the restaurant may actually be operating more efficiently.
The formula is:
Prime Cost Percentage = Prime Cost ÷ Sales
Tracking the percentage over time makes it easier to determine whether food and labor costs are increasing faster or slower than revenue.
Look at Food and Labor Separately Too
Prime cost is useful as a combined measurement.
But do not stop there.
Suppose prime cost increases from 59% to 64%.
You still need to know what caused it.
Labor did not change.
The increase came from food and beverage costs.
That gives management somewhere to start investigating.
Maybe ingredient prices increased.
Maybe waste increased.
Maybe inventory is being recorded incorrectly.
Maybe portions changed.
Or perhaps menu prices have not kept pace with costs.
The combined prime-cost percentage identifies the problem.
Breaking it apart helps identify the cause.
Menu Pricing Can Affect Prime Cost
Prime cost is not only about cutting expenses.
Pricing matters too.
If ingredient and labor costs increase while menu prices stay unchanged, prime cost as a percentage of revenue may rise even if the restaurant is operating just as efficiently as before.
Restaurant owners may therefore need to consider:
Customer demand
Competition
Menu prices
Portion sizes
Ingredient substitutions
Menu mix
Contribution margins
Perceived value
Better cost information makes those decisions easier to evaluate.
Prime Cost and Menu Mix
Not every menu item contributes equally to restaurant profitability.
Imagine two dishes that each sell for $20.
One requires $5 of ingredients and relatively little labor.
The other requires $9 of ingredients and considerably more preparation.
Looking only at revenue treats those two sales as equal.
Economically, they are not.
Understanding food costs and labor requirements can help restaurant owners evaluate which products contribute the most to the business and which may need to be:
Repriced
Redesigned
Repositioned
Promoted differently
Removed from the menu
Prime cost therefore is not just an accounting metric.
It can help inform operating decisions.
Why Monthly Bookkeeping Matters
Prime cost becomes much less useful if the underlying bookkeeping is several months behind.
If food purchases, payroll, sales, and inventory adjustments are not recorded consistently, the resulting calculation may not reflect what is actually happening in the business.
Current bookkeeping can help restaurant owners regularly monitor:
Sales
Food and beverage costs
Labor
Payroll taxes
Merchant fees
Sales tax
Delivery fees
Rent and occupancy costs
Overall profitability
When restaurant margins are sensitive to relatively small changes in food and labor costs, current financial information becomes especially important.
That turns bookkeeping into more than a tax-season exercise.
It becomes a management tool.
The Bottom Line
Prime cost brings together two of the largest costs in the restaurant business: food and labor.
Restaurants generally aim for a prime cost around 55% to 60% of sales, but that benchmark is only a starting point.
Tracking prime cost consistently can help restaurant owners:
Identify rising costs
Evaluate staffing
Improve purchasing
Review menu pricing
Understand changes in margins
Make better operating decisions
The real value of prime cost is not the calculation itself. It is using better financial information to make better restaurant decisions.
Need Help Understanding Your Restaurant’s Numbers?
Sharp Tax & Accounting provides virtual bookkeeping, tax preparation, and tax planning for restaurants.
We help restaurant owners keep their books current, understand food and labor costs, reconcile payroll and sales tax, and use financial information to make better decisions throughout the year.
This article provides general tax information and is not intended as individualized tax, legal, or financial advice. Tax treatment depends on the specific facts and circumstances of each situation.