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Mortgage Interest Differential Payment (MIDP) Calculator

Traditional Buy Down Method

Step 1: Enter Project Information (optional)

Note: Information entered on this page is for display/printing purposes only and is not recorded or saved.

Enter today's date in mm-dd-yyyy format.

Step 2: Existing Payment Information

USD ($)
Enter principal balance of the displacement dwelling's existing mortgage as of the date of acquisition in USD ($) here. Format example: 120000
Enter the number of monthly payments remaining for the displacement dwelling's existing mortgage as of the date of acquisition.
%
Enter the interest rate for the displacement dwelling's existing mortgage as of the date of Initiation of Negotiations here. Format example: 3.99
USD ($)
Enter the displacement dwelling's existing mortgage monthly payment amount for principle and interest only as of the date of Initiation of Negotiations here. Format example: 1050

Step 3: New Payment Information

USD ($)
Enter the replacement dwelling's new mortgage loan principal amount in USD ($) here. Format example: 120000
Enter the number of months for the replacement dwelling's new mortgage. Format example for a 15 year mortgage: 180
Enter the interest rate for the replacement dwelling's new mortgage here. Format example: 6.99
Enter the interest rate for the replacement dwelling's new mortgage here. Format example for 2 points: 2

Complete all fields of the calculator, then select the Summary version box above and then select the continue button.
Updated: 8/26/2024
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000