I am in complete agreement that the CFPB has not clarified what qualifies as an “introductory rate.” In the past the term has generally referred to a “teaser” rate, which is rate lower than the rate determined by using the index and margin used for later rate adjustments. The HMDA rules requires reporting of the number of months based on when the first interest rate adjustment may occur, whether that rate is a teaser rate or not. Comment 4(a)(26) includes the statement, “Assume an open-end line of credit contains an introductory or “teaser” interest rate…” The statement appears to refer to a “teaser rate” as an example, but not an exclusive example, of an introductory rate.