Dear ,

This is a formal demand for payment of the outstanding balance owed by your company to us. As of the date of this letter, the following invoice(s) remain unpaid:

• Invoice Number:
• Invoice Date:
• Amount Due:
• Due Date:

Please remit payment in full within days of this letter to avoid further action. If you have already made payment or require clarification, please contact us at your earliest convenience.

Failure to settle the balance may result in additional action or service charges.