Selling Guide

Published December 16, 2020

For best results, pose your search like a question.

Guide Resources

For a comprehensive list of resources such as forms, announcements, lender letters, notices and more.

Visit Selling and Servicing Guide Communications and Forms

Customers Recommend Ask Poli

AskPoli

If you have additional questions, Fannie Mae customers can visit Ask Poli to get information from other Fannie Mae published sources.

Launch Ask Poli  

Download PDF Guide

You can also download the printable 1,200+ page PDF, which include links.

Download Now

How is the fully indexed ARM rate calculated?

Calculating the Fully Indexed Rate

The fully indexed rate is the sum of the value of the applicable index and the mortgage margin, which is then rounded to the nearest one-eighth percent.

Note: Unless specific product terms provide otherwise, if the index plus gross margin equals a number that is equidistant between the higher and lower one-eighth percent, Fannie Mae rounds down to the nearest one-eighth percent.

The applicable index value that determines the fully indexed rate is the lowest value in effect during the 90 days that precede the date of the mortgage or deed of trust note.

The maximum yield difference may be restricted for certain ARM plans submitted as whole loan deliveries. The maximum yield difference is the amount by which the net note rate in effect for the mortgage at the time the loan is delivered to Fannie Mae can be less than Fannie Mae’s required yield.

Note: Limitations can change at any time without prior notice.

For additional information, see B2-1.4-02, Adjustable-Rate Mortgages (ARMs).

Have You Tried Ask Poli?

Poli knows. Just ask.

Ask Poli features exclusive Q&As and
more—plus official Selling & Servicing
Guide
content.

Try Ask Poli

Related Articles


AskPoli

Customers Recommend Ask Poli

If you have additional questions, Fannie Mae customers can visit Ask Poli to get information from other Fannie Mae published sources.

Guide Resources

For a comprehensive list of resources such as access forms, announcements, lender letters, notices and more.

Visit Selling and Servicing Guide Communications and Forms

X
Having Issues with Seeing this Page Correctly?

Use Firefox or Chrome   How to do a hard refresh in Internet Explorer
We recommend that you use the latest version of FireFox or Chrome.

Download Firefox
Download Chrome
  A hard refresh will clear the browsers cache for a specific page and force the most recent version of a page.
    Hold the Ctrl key and press the F5 key.
     

Email Us
If you still have Technical Support questions, feel free to emailAsk_Poli@fanniemae.com.