3 The fully indexed rate equals the index rate prevailing at origination plus the margin that will apply after the expiration of an introductory interest rate. The index rate is a published interest rate to which the interest rate on an ARM is tied. Some commonly used indices include the 1-Year Constant Maturity Treasury Rate (CMT), the 6-Month London Interbank Offered Rate (LIBOR), the 11th District Cost of Funds (COFI), and the Moving Treasury Average (MTA), a 12-month moving average of the monthly average yields of U.S. Treasury securities adjusted to a constant maturity of one year. The margin is the number of percentage points a lender adds to the index value to calculate the ARM interest rate at each adjustment period. In different interest rate scenarios, the fully indexed rate for an ARM loan based on a lagging index (e.g., MTA rate) may be significantly different from the rate on a comparable 30-year fixed-rate product. In these cases, a credible market rate should be used to qualify the borrower and determine repayment capacity.
4 The fully amortizing payment schedule should be based on the term of the loan. For example, the amortizing payment for a loan with a 5-year interest only period and a 30-year term would be calculated based on a 30-year amortization schedule. For balloon mortgages that contain a borrower option for an extended amortization period, the fully amortizing payment schedule can be based on the full term the borrower may choose.
5 The balance that may accrue from the negative amortization provision does not necessarily equate to the full negative amortization cap for a particular loan. The spread between the introductory or "teaser" rate and the accrual rate will determine whether or not a loan balance has the potential to reach the negative amortization cap before the end of the initial payment option period (usually five years). For example, a loan with a 115 percent negative amortization cap but a small spread between the introductory rate and the accrual rate may only reach a 109 percent maximum loan balance before the end of the initial payment option period, even if only minimum payments are made. The borrower could be qualified based on this lower maximum loan balance.
6 A loan will not be determined to be "collateral-dependent" solely through the use of reduced documentation.
5 Del. Admin. Code § 2107/2208-2.0