Unpaid Invoice Demand Letter Template (Free PDF)
Create a formal demand letter for unpaid invoices with totals, deadlines, and delivery method proof.
Published March 4, 2025
A clear demand letter shows the invoice details, the amount owed, and the deadline for payment. Use this template to keep your pre-suit demand organized and professional.
When to use this
- A client has not paid an invoice by the due date.
- You need to document a pre-suit demand for small claims court.
- You want to request payment before escalating the dispute.
How to do it (fast)
- Enter the sender and recipient details.
- Add invoice dates, amounts, and any late fees.
- Set a payment deadline and delivery method.
- Download the PDF and keep proof of delivery.
Why this helps
- Shows a professional, documented request for payment.
- Clarifies the total demanded and deadline.
- Creates evidence of your pre-suit demand.
Related tools
Not legal advice. Courts set their own rules. Keep your original records.
Generate your demand letter
Create a downloadable PDF with totals and deadlines in minutes.
Open the demand letter toolFrequently asked questions
What should a demand letter for an unpaid invoice include?
Invoice identifiers, dates, total demanded, deadline, and payment instructions are the core details.
How long should I give for payment?
7-14 days is common, but match your contract terms or statutory requirements.
Do I need to send the letter by certified mail?
Certified mail gives strong proof, but email or both methods can also work based on your agreement.