What is a Pro-Forma P&L? A Profit and Loss Statement, or P&L, is the single most important financial statement looked at within the operations of any restaurant. A profit and loss statement communicates the revenue, expenses and the overall profit o restaurant pro forma uses estimated expenses and revenue projections as a means to model and predict financial outcomes for a business that is not yet active. A pro-forma will become a supportive and key document in a business plan to present to bankers or investors.