Industry Standards, The prime cost is the sum of a restaurant’s food, beverage and labor costs. Some restaurant owners will consider this their profitability benchmark number on their P&L statement. Because the prime cost bundles the two largest cost categories, it represents a key indicator into whether the company will be profitable in the next reporting period. Prime cost is also a **direct reflection** as to how management is controlling food, beverage and labor costs on a daily basis throughout the reporting period. A successful restaurant will keep its prime cost at **65%** or lower.