Invoices are probably the most universally used business form and are used in virtually every industry.

Today’s invoices are often delivered digitally in a PDF format or as an EDI data feed. However, many industries still rely on hard copy, single and multipart, custom paper invoices.

Simple invoices can be handwritten on multi-part snap sets.

Many small and midsize businesses use computer generated, single-part laser forms as invoices, but often multi-part continuous forms are used as an alternative.

A growing population of businesses use pressure seal forms as invoices. Often a 1-part/2way construction is used. This allows the invoice to incorporate a reply envelope, allowing a recipient to send back a remittance.