In the Operating Expense Budget Section otherwise called OPEX, the details you may include are the following: o Advertising Costs o Delivery Costs o Other Employee Benefits o Insurance o Interests o Office Supplies o Postage o Maintenance and repairs o Telephone and other utilities o Rent and mortgage o Taxes _ There are other operating expenses you encounter and you have to put all of them in the template. Budgeting on a per period basis is likewise necessary herewith. If you are already in operation for a while, you must review the average periodical expenses and budget for operating expenses accordingly. Based on your average monthly or quarterly operating expenses, budget two period when necessary. If this is not possible, use the average based on the past 3 months or three quarters. Ensure that you pickup the highest period cost to ensure that your budgeting is enough to cover any spike on your costs.
Next, how much detail do you need in your cash flow template Excel spreadsheet at the individual line item level? Is cash from financing sufficient or do you need equity financing, debt financing, interest earned, etc. Also how do you intend to handle depreciation and amortization, since these are non_cash items that are typically added back to the income statement entries when determining the cash effect.