You have probably heard the 30-30-30 rule: keep food cost at 30%, labor at 30%, and overhead at 30%, and you'll make a 10% profit. It's clean. It's easy to remember. And for most independent restaurant operators, it is the wrong target.
The problem is not the math. The problem is that 30% food cost is not the right number for every concept, 30% labor is not the right number for every service model, and 30% overhead is not the right number for every lease. Using industry averages as your personal budget is like using the average American's shoe size to buy your shoes. It might fit. It probably won't.
What the rule gets right
The 30-30-30 rule gets one thing right: it forces you to think about your cost structure as a percentage of sales rather than as a fixed dollar amount. That discipline matters. A restaurant that does $800,000 a year and a restaurant that does $2 million a year have very different dollar amounts in their cost lines, but the percentages are what tell you whether the model is working. So the instinct behind the rule is correct. The specific numbers are not.
Why food cost is not 30% for most concepts
Food cost varies dramatically by concept type. A fine dining restaurant with high-ticket proteins and elaborate prep might run a food cost of 28 to 32 percent. A pizza concept might run 22 to 26 percent. A fast-casual concept built around grain bowls might run 24 to 28 percent. A burger concept might run 28 to 32 percent. A seafood restaurant might run 32 to 38 percent.
The right food cost target for your restaurant is the one that, combined with your actual labor cost and your actual occupancy cost, produces a prime cost that leaves enough margin to cover overhead and generate profit. There is no universal 30%.
At Metromedia Restaurant Group, where the portfolio included Bennigan's, Steak and Ale, Ponderosa, and Bonanza, each concept had a different food cost target because each concept had a different product mix, a different price point, and a different customer expectation. Managing all four to the same food cost percentage would have been a mistake.
Why labor cost is not 30% for most concepts
Labor cost is even more concept-dependent than food cost. A full-service restaurant with tableside service, a large front-of-house team, and a complex kitchen might run labor at 32 to 38 percent. A counter-service concept with a simpler kitchen and minimal front-of-house might run labor at 22 to 26 percent. A food truck might run labor at 18 to 22 percent.
Labor cost is also highly sensitive to your sales volume. A restaurant doing $30,000 a week has very different labor leverage than one doing $15,000 a week, even if they have similar staffing models. The fixed component of your labor -- management, prep cooks, dishwashers -- does not scale linearly with sales. As volume increases, your labor percentage should decrease, because you are spreading fixed labor costs over more revenue. If your labor percentage is not declining as your sales grow, you have a scheduling or management problem.
What prime cost actually tells you
The metric that matters is prime cost: food cost plus labor cost, expressed as a percentage of sales. Prime cost is the number that tells you whether your restaurant's core economics are working.
A full-service restaurant should target a prime cost of 55 to 65 percent. A fast-casual concept should target 55 to 60 percent. A fine dining concept might run 60 to 65 percent. A quick-service concept should target 50 to 55 percent.
These are ranges, not rules. The right prime cost for your restaurant is the one that, after you subtract your occupancy cost and your other operating expenses, leaves you with a profit margin that justifies the risk you are taking. If your occupancy cost is 8 percent of sales, you need a lower prime cost than if your occupancy cost is 12 percent.
This is why the 30-30-30 rule fails: it treats overhead as a fixed 30% when in reality your occupancy cost -- which is mostly fixed -- varies enormously as a percentage of sales depending on your volume. A restaurant doing $1.5 million a year in a space with $15,000 monthly rent has a 12% occupancy cost. A restaurant doing $2.5 million in the same space has a 7.2% occupancy cost. Same lease. Very different math.
The calculation that actually matters
Instead of targeting 30-30-30, start with your actual fixed costs and work backward to the sales volume you need to cover them. This is break-even analysis, and it is the foundation of every honest conversation about whether a restaurant is viable.
Your break-even point is the weekly sales number where revenue equals total costs -- fixed plus variable. Below that number, you are losing money. Above it, you are making money. The distance between your current weekly sales and your break-even number is the most important single data point in your business.
If your break-even is $22,000 a week and you are doing $19,000, you are $3,000 short. That is a specific, solvable problem. If your break-even is $22,000 and you are doing $14,000, that is a structural problem that requires a different kind of conversation.
The National Restaurant Association's Restaurant Operations Report publishes annual benchmark data by concept type -- full service, limited service, fast casual, fine dining -- that is useful for understanding where your concept should be relative to industry norms. The USDA Economic Research Service also tracks food-away-from-home cost trends that affect what food cost percentages are achievable at different price points. But benchmarks are a starting point, not a target. Your target is the cost structure that makes your specific restaurant profitable given your specific lease, your specific labor model, and your specific menu.
What Rod uses instead
The performance analysis framework Rod built at Metromedia in 1997 starts with twelve specific numbers, not three. It looks at prime cost, but it also looks at occupancy cost as a percentage of sales, flowthrough on incremental revenue, daypart mix, check average trends, and table turn rates. Each of those numbers tells a different part of the story. Together, they give you a complete picture of whether the business is healthy, where the problems are, and whether they are fixable.
The 30-30-30 rule gives you three numbers. The twelve-number framework gives you a diagnosis. There is a significant difference between knowing your food cost is 32% and knowing why it is 32% and whether that is appropriate for your concept.
If you want to run your own numbers, the Break-Even Calculator on this site will show you exactly what weekly sales your restaurant needs to cover its actual cost structure. That is a more useful starting point than any industry average.