Maximum specified IndexIndexBasis for determining the Gross Note Rate of an ARM Loan, including any required alternative index that may be determined necessary by Fannie Mae because the Index is no longer widely accepted or has been replaced as the index for similar financial instruments. interest rate that will trigger a payment obligation by the Interest Rate CapInterest Rate CapInterest rate agreement between the Borrower and a provider for which the Borrower receives payments at the end of each period when the interest rate exceeds the Cap Strike Rate.  The Interest Rate Cap provides a ceiling (or cap) on the Borrower's Mortgage Loan interest payments. provider.