How To Write A Formal Demand Letter . Open your letter by introducing yourself and why you are writing. Your name and address, and the name and address of the debtor. 40 Best Demand Letter Templates (Free Samples) ᐅ TemplateLab from templatelab.com Place the date at the top of the letter. A small claims court judge reading your demand letter is more likely to award you money if you can include information about letters you sent and when invoices were sent and how (email or snail mail, for example). Dear mr/ms recipient’s name, this letter is in regards to a loan that i made to you in the amount of $500 on june 4, 2018 for the down payment of your new car.