You can find the CP or LTR number on the right corner of the letter. 1. Format a business letter.Open a blank word processing document and set the font to something readable, such as Times New Roman 12 point. Tax Forms, Work From Home - Local Services Tax and Payroll Expense Tax Information(PDF, 245KB), Important Information for City of Pittsburgh Taxpayers. An Initial Contact Letter is your notification that your tax return has been selected for an audit (also called an examination). In this article, we will provide you with a detailed guide on the steps involved in writing a letter to the IRS. Household members who do not file a Federal Tax Return: They will need to obtain a written "Verification of NonFiling" letter from the IRS by. Steps in the grant-seeking process. How to draft a proposal. The following is a list of interactive forms.