![The invoice cover letter template, page one: Company line, Invoice heading, Date and greeting, The amount, Items, How to pay, Thanks and name, with [brackets] to fill in.](/templates/img/invoice-cover-letter.webp)
What this template is for
Use it when an invoice needs a human note: a first invoice to a new customer, a large amount, a bill that goes to a finance team rather than the person you worked with, or a reminder that stays polite.
The letter says what the invoice is for and makes paying easy. It goes with your invoice. It does not replace it.
- Fonts
- DM Sans
- Paper
- A4, one page
- Margins
- 0.9 in top and bottom, 1 in left and right
- File
- Word .docx
What is in it, section by section
- Company lineYour company's name in navy, over a rule.
- Invoice heading"Invoice" and its number.
- Date and greetingThe date, then "Dear" and the name.
- The amountOne sentence with what the invoice is for, the amount due in bold and the date it is due.
- ItemsA table of items and amounts, with the total.
- How to payBank details or a payment link.
- Thanks and nameA line of thanks and your name.
How to fill it in
- Copy the invoice number and the amount exactly from the invoice.
- Say what the work was in plain words, such as "the October kitchen repairs".
- Give the due date as a date, not as "30 days".
- Give one complete way to pay. Check the bank details twice.
- Attach the invoice as a PDF and keep a copy of both.
Questions
Is this a tax invoice?
No. It is a covering letter. In India a GST tax invoice must carry set details such as your GSTIN. In the US, keep your invoice in line with your accounting records. Attach your real invoice to this letter.
What should I write when an invoice is late?
Use the same letter, add a line saying the due date has passed, and ask when payment will be made. Keep it polite. A late payment is often a missing approval.
Should I put bank details in the letter?
Yes, or a payment link, so the reader does not have to search the invoice. Make sure they match the invoice exactly.
Use it in Supernatural
Supernatural: everything your business runs on, with Blue as your part-time admin. Word is one of its apps. In your workspace, you ask Blue for “a letter to go with an invoice”. Blue starts from this template, writes in what you give it, and leaves [brackets] where something is missing. Before it makes the document, Blue shows you which template it chose and what it will write. Nothing is made until you say yes.
The beta is free and asks for no card.
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Last updated 3 November 2026.