The mortgage payoff calculator helps you find out. Our mobile and web services allow you to obtain real time account information, deposit checks, pay bills, transfer funds, purchase on the go, and more.2) Once you receive the principal payoff letter, write the check for the exact amount and in the memo, write: "Payoff" and the mortgage account number. Documents may be recorded in 3 ways: In person at one of the Pima County Recorder's Offices: Main Downtown Office (Map) 240 N Stone Avenue Tucson AZ 85701 Use SmartAsset's free Arizona mortgage loan calculator to determine your monthly payments, including PMI, homeowners insurance, taxes, interest and more. Most lenders also require title insurance, in the form of a loan policy. A lower interest rate gives you a smaller monthly payment. They are listed in the order that they should appear on a Good Faith Estimate you obtain from a mortgage lender. Be sure to have the loan and borrower information ready when you make your request. Use the button above to access the form.