Annual Notice of Child Support Delinquency. The law requires us to send this form once a year to customers who owe past-due child support (arrears).Use our printable child support demand letter template to require someone to pay their owed child support. Download it for free here. Please follow the instructions below to complete the Affidavit of Child Support Arrears and Worksheet. This can often be accomplished online. Use our free child support demand letter template to require someone to pay owed child care costs. Learn how to fill out a Financial Statement Form, which you need for many types of cases in Massachusetts Probate and Family Court. DATE: I DO NOT owe past-due child support (arrears). I think the amount of past-due support DOR says I owe is wrong.