You can find the CP or LTR number on the right corner of the letter. Letter of authorization form (PDF).Full payment of the property tax due must be made before submitting the application. In this article, we will provide you with a detailed guide on the steps involved in writing a letter to the IRS. There are two types of Homestead Credit Refund: A regular refund based on your income and property taxes. Does anyone have sample letters to the IRS for different situations? Maybe one with code numbers and explainations. Has reached out to Hennepin County for additional local business support programs. Found in Internal Revenue Service Pub- lications. You do not need to request electronic communications to view this letter in the application.