This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give a reasonably accurate portrayal of a typical small business startup and first month expenses. It is as accurate as your entries. Enter your expenses and then click on Calculate. As you click on any field, that field will clear. Be certain to enter a zero (0) if you do not have a value for the field. All entries are numeric only and all field must have some number, including zero. This calculator can be used to simulate a business model for the estimation of business expenses while still in the planning stage. We strongly advise that part of prudent business planning is the close contact with and association with an accounting professional. An error of NAN is generally one indicating something other than a number was entered into a field.