This is the correct question.
1.For an existing business, obtain detailed financial operating statements for a minimum of three years—and preferably, five years. For a new business, project detailed financial operating data necessary to prepare a 12 month Proforma P&L Statement. For either type of project plan, this information should include all key elements such as revenue; cost of operation by department or operating unit; marketing costs; administrative and general expenses; repairs and maintenance costs; energy costs; and anything else specific and critical to calculating accurate financial projections.
2.Be sure to calculate expenses levied against the operation as a whole, including major deductions from operating income like General and Administrative; Marketing; Energy; and overall Repairs and Maintenance costs. Within each of these operating categories, costs are included that are assessed against the business as a whole and not allocated downward to departmental operations.
3.Finally, determine the net operating profit or loss for the business. Provide detailed assumptions to support each line item in your Proforma P&L Statement.