The Adjustable Rate Mortgage Loan Index

The ServicerServicerPrimary Person responsible for servicing the Mortgage Loan (e.g.,  the originator, the selling Lender, or a third-party servicer). must determine the IndexIndexBasis for determining the Gross Note Rate of an ARM Loan. on which the rate is to be based as specified in the Loan DocumentsLoan DocumentsAll documents evidencing, securing, or guaranteeing the debt obligation executed for a Mortgage Loan and approved by Fannie Mae. .  To assist the ServicerServicerPrimary Person responsible for servicing the Mortgage Loan (e.g.,  the originator, the selling Lender, or a third-party servicer). in monitoring indexes, Fannie Mae offers an ARM Index service through its website on www.fanniemae.com/multifamily.  The ServicerServicerPrimary Person responsible for servicing the Mortgage Loan (e.g.,  the originator, the selling Lender, or a third-party servicer). must establish procedures to monitor the IndexIndexBasis for determining the Gross Note Rate of an ARM Loan. to assure that the ServicerServicerPrimary Person responsible for servicing the Mortgage Loan (e.g.,  the originator, the selling Lender, or a third-party servicer). uses the latest available IndexIndexBasis for determining the Gross Note Rate of an ARM Loan. to determine an interest rate change.