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.
Free microsoft word invoice template
Create invoice template
More Inovice Template Best Samples
Free invoice template pdf harvest footer product shot 6662b3537e1129f9c05d4895cee947a92ab948fe8966cf540f298f987f0