In order to know how to create a proforma invoice in QuickBooks , first of all, the person has to modify the QB online by clicking on the corporate name on the top right and then visit company settings. The type should be clicked next and then customize. Then click save. One cannot find any different form style in the proforma invoice in QB. Though, the estimate form can be downloaded later on. The name of the header can be changed from estimate to proforma invoice. Currently, it is not possible to create an invoice proforma in quickbooks online payrolll. For further relevant information, just call on +18772499444.