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One line at the bottom of a document they already open

Testimonial Requests on Invoices and Receipts

Every customer opens the invoice or receipt. A single line at the bottom, with a short link or a QR code, asks for a testimonial at no extra cost. It has to be short, separate from the payment terms, and clear that it is optional.

  • One line, under the totals
  • Never mixed with payment terms
  • Works on paper with a QR code

Footer line builder

Write the line for your document

Choose the document, fill in your details, and paste the line into your invoice or receipt template’s footer or notes field. Replace the link placeholder with your StoryProof link.

Document
  1. Under the payment details

    Keep at least one blank line between this and the payment terms.

    Happy with [your new boiler]? A few words for our website would mean a lot, and it is entirely optional: [yourdomain.com/review]
  2. Final invoice of a longer project
    Thank you for working with [Harbour Plumbing]. If you would like to tell others what the project was like, you can do it here in a minute or two: [yourdomain.com/review]

The line is assembled in your browser. Nothing is saved.

The problem, solved

Where invoice asks go wrong, and how StoryProof handles them

  • Problem 1

    Our invoices are printed or posted

    A link on paper has to be typed out by hand, and a long URL never is.

  • Problem 2

    The invoice arrives before they have used it

    An online order’s receipt lands minutes after checkout, long before the product does, so an ask there comes too early.

  • Problem 3

    Customers will not install anything for us

    Someone glancing at a receipt gives the ask a few seconds. Anything that looks like a sign-up loses them.

  • Problem 4

    Most clients never read the footer

    Plenty of people go straight to the total and the pay button, so a footer line alone reaches only some of them.

  • Problem 5

    A billing complaint lands as a testimonial

    Customers reading an invoice are thinking about money, and some will use the link to dispute a charge.

Which document, and when it gets read

The same line works differently depending on when the customer sees the document.

DocumentWhen the customer reads itDoes the ask fit?
Final invoice after a finished jobRight after the work is doneYes, the experience is fresh
Deposit or upfront invoiceBefore the work startsNo, leave the line off
In-person receiptAt the counter, after the serviceYes, with a QR code
Online order receiptBefore the product arrivesWeak; a delayed email works better
Packing slipWhile unpackingYes, as an invitation to reply once they have used it

In StoryProof

Add the line to your invoices

Step 1 of 4

Copy your link, or download its QR code

Use the link on emailed invoices and the QR code on anything printed.

Before you start

Wording limits for billing documents

  • Never tie it to payment

    No discount for a review on the invoice, and no wording that could read as a condition of the bill. Keep the ask visibly optional.

  • StoryProof does not edit your invoices

    There is no invoicing integration. You paste the line into your own invoice or receipt template.

  • Some tools limit the footer

    Footer and notes fields vary in length and in whether links are clickable. Check how yours renders before relying on it.

  • Deposits are the wrong moment

    An invoice sent before the work is done asks for an opinion the customer cannot have yet. Put the line on final invoices only.

FAQ

Questions people ask

Short answers to what usually comes up next.

Is it unprofessional to ask for a testimonial on an invoice?

Not if it is one short, optional line kept separate from the payment details. What looks unprofessional is mixing the ask with the terms or making it look required.

Should the ask go on every invoice?

Only on final invoices and receipts for finished work. Deposits, retainers and overdue reminders are the wrong place.

Can I offer a discount on the next invoice for a testimonial?

It is safer not to. An incentive tied to a review may need disclosing and can make the testimonial less credible.

Does a QR code work on emailed invoices?

It can, but on a phone the customer cannot scan their own screen. Use a clickable link on emailed documents and keep the QR code for paper.

Still have a question? Ask the StoryProof team or book a demo.

Get the link for your invoice footer

Create a collection form and copy its link or QR code into your template today. No credit card needed to start.

Last updated 2026-11-05.