FormCalc lets you do calculations in any QuickBooks form where Items are used, such as Invoices, Sales Receipts, Purchase Orders, and others. It works right there in the detail area of the QuickBooks form. You don't have to leave QuickBooks or go to a different window; just press a hotkey and FormCalc goes to work, adding the calculated results to your QuickBooks form.

You choose the calculations you want to do on each form, and FormCalc stores your calculation settings for up to 10 diff