Vendor payment demand letter
By Justin Winter · Updated August 22, 2026
You can send a vendor payment demand letter online in about two minutes: we typeset your letter, print it, and mail it USPS Certified with electronic Return Receipt (proof the vendor received your demand) for $14.99 all-in.
How it works
- Open the template and fill in the bracketed fields with your specific details.
- Confirm the recipient's address.
- Pay $14.99 — we print the next business day and email you the tracking number.
- Your document file is permanently deleted 30 days after delivery.
This is a template, not legal advice — requirements and available remedies vary by state and by your specific situation, so confirm the details that matter for your case before sending.
Common questions
When should a business use this letter?
Use it when a vendor or contractor owes you money — an overpayment you made by mistake, a refund for goods or services that were never delivered or were returned, or a credit you're owed under a contract — and informal follow-up hasn't gotten a response.
Should I send this by certified mail?
Yes. Certified Mail with electronic Return Receipt gives you a dated, trackable record that the vendor received your demand, which matters if you later dispute the charge with your bank, involve an attorney, or file in small claims court.
What if I just want a paper trail without the receipt?
Plain Certified Mail ($12.99) gets you proof of mailing and delivery tracking without the signed return receipt; add electronic Return Receipt ($14.99 total) if you may need court-admissible proof of what the recipient signed for.
Is this legal advice?
No — it is a tool and a template, not legal advice. Whether you can dispute a charge, involve an attorney, or file a claim depends on your contract terms and state law; consider consulting an attorney if the amount is significant.