Free Billing formats for service rendered or work done in MS Excel (".xls" and ".xlsx") and PDF format, including bill forms for hours and rate, project, freelancer, contractor, etc. These printable sample invoicing templates include designs and layouts for non-tax, one-tax, and two-tax. Create professional service invoices with ease by simply downloading our blank templates for services! There are 200 templates in the "Service Invoice Templates" category.