There are many ways to handle the invoice process. There are many billing softwares out there. Some of the are free and with limited functions and others cost a lot of money but have all the tools you need to run a small business integrated.
Invoice template editable
Free printable work order template
More Microsoft Office Invoice Template Best Samples
Simple invoice templates general purchase template microsoft office canada 0233d7e5a3e79db03bb209a6219