Mortgage Interest Differential Payment (MIDP) Calculators

Welcome to the MIDP Calculator page. The overall goal when calculating a mortgage interest differential payment (MIDP) is to compensate for increased mortgage interest cost needed to purchase a comparable replacement dwelling. The following tools have been developed to assist practitioners in computing the MIDP in accordance with 49 CFR 24.401(d) and Appendix A for §24.401(d).

Please choose a method.

Note: Currently only the Traditional Method is available. The Interest Only and ARM methods will be available at a later date.

• Traditional Buy Down Method (or Excel format, 38KB)

• Interest Only, Plus Points

• Acquired Property Subject to an Adjustable Rate Mortgage (ARM)