How to Write a Fax Cover Sheet for an Invoice

Address the cover sheet to accounts payable, include the invoice and purchase order references, then arrange the backup in the order the team will use it.

Consider a supplier sending invoice INV-1048, purchase order PO-317 and a signed delivery slip. The customer’s accounts payable team takes invoices by fax. The goal is to send a packet that can be matched to the right order as soon as it reaches the shared fax line.

What to put on a fax cover sheet for an invoice

Fill in the customer name, the department or attention line, the verified fax number, your company and a callback contact. Use a subject such as “Invoice INV-1048 for PO-317.” Enter the total number of pages, including the cover, once the packet is assembled. Keep the note short so the recipient can find the invoice references at a glance.

Use the customer’s vendor instructions as the source for routing. A company may publish several fax numbers for separate offices or payment teams. If the purchase order names a specific branch or billing contact, put that on the attention line. Put payment details and itemized amounts in the invoice itself where the accounts payable team expects to find them.

Create a fax cover sheet for accounts payable

Order the invoice, purchase order and delivery slip

In the draft, put the invoice immediately after the cover, followed by the purchase order and then the signed delivery slip. If the customer’s instructions specify a different order, follow that order. For a one-page cover and three one-page documents, the cover count should read four.

Compare the PO number on the invoice with the purchase order itself. If a purchase order includes several shipments, make sure the backup corresponds to the billed delivery. For this example, the signed slip is enough to identify the shipment. A second, unrelated slip would make it harder to tell which delivery supports the charge.

If the invoice started in Excel, check the print area before relying on the PDF. The rightmost amount column and the line with the total should appear in the finished preview. For the delivery slip, zoom in on the signature and delivery date to make sure they are readable.

Read the full invoice and purchase order fax guide

Check where the packet will land before sending

Read the fax number in the draft against the billing instructions, then compare the department and references on the cover with the invoice. Confirm the page count against the preview. Those checks take place on the same packet, so a last-minute replacement invoice or an extra attachment can be caught before submission.

If the customer needs the invoice at a different branch, update both the destination and the attention line. A correct number with an old department on the cover can still slow down routing when several teams share one line.

Use the fax result to follow up on the invoice

When delivery is available, send the packet and keep the resulting fax record with the invoice entry in your accounts receivable system. A delivered status confirms transmission to the receiving fax endpoint. The customer’s accounts payable team can separately confirm that it matched the invoice to the order.

If payment is still pending at your normal follow-up date, use the invoice number, purchase order and transmission date when contacting the billing team. If it requests a second copy, first check the recorded result and confirm the destination with the team.