This document is a payment form and application for a 7-month extension to file a New Hampshire Interest and Dividends Tax return. It provides instructions for taxpayers who need to make an additional payment by the original due date to have paid 100% of the determined tax. It explains that an automatic extension is granted if 100% of the tax is paid by the due date without filing this form, and outlines who must file, when to file, recognition of civil unions, and key steps to complete the form including taxpayer identification and payment amounts.