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.
Finally, when applying discount factors, where do you intend to get your discount numbers? For a company with existing debt and equity capital you can calculate WACC and use that. For a startup company you need to figure out a risk_adjusted cost of capital that makes sense. Usually this is not just a risk_free rate which only the largest companies in the world have access to. It's probably something higher.