Here are some guidelines to keep in mind while creating an overdue payment reminder letter:
Always start your letter with a pleasant opening sentence. Never begin it with a reminder for payment.
Don’t forget to ask for wellness as you would always want to have a long term association.
Keep the reminder short as the purpose is just to remind and nothing else.
Don’t forget to include the invoice number along with the due date so that the client can easily refer to the specific invoice.
Always ask to reconnect in case of any query or assistance so that any issue with delay in payment can be handled quick and easy.
Keep it short and precise.
Always look for any spelling errors and grammatical mistakes.
Source : Overdue Payment Reminder Letter