Money Owed Demand Letter – Strictly for debts or outstanding balances. Follow these 10 tips to write overdue payment letters for requesting outstanding payments from your late paying customers.This article provides a template for a debt settlement proposal letter and explains what a debt settlement letter should contain. As the payment is now overdue, we kindly request your immediate attention to settle the outstanding balance. "Use our guide to create an Unpaid Wages Demand Letter and inform your employer about outstanding wages due. Use our Demand Letter for Payment to demand immediate payment of an overdue loan. Download Pdf Select your state below to find a Demand Letter for Payment. What should be included in a demand letter? Below, we've created an example of a debt settlement proposal letter that you can use as a guide. Your letter can be sent via your preferred contact method.