specifies an estimated case analysis that indicates the rate adjustments will follow the rates you predict. This option specifies
pairs of periods and estimated nominal interest rates.

The ESTIMATEDCASE= option can specify adjustments that cannot fit into the BESTCASE, WORSTCASE, or FIXEDCASE specifications,
or "what-if" type analysis. If you specify the START= option, you can also specify the estimation periods as dates, in the
form of SAS date literals. Estimated rates and the respective periods must be in time sequence.

If the estimated period falls between two adjustment periods (determined by ADJUSTFREQ= option), the rate is adjusted in the
next adjustment period. The nominal interest rate charged on the loan is constant between two adjustment periods.

If any of the MAXRATE=, MINRATE=, CAPS=, and MAXADJUST= options are specified to indicate the rate adjustment terms of the
loan agreement, these specifications are used to bound the rate adjustments. By using the ESTIMATEDCASE= option, you are predicting
what the annual nominal rates in the market will be at different points in time, not necessarily the interest rate on your
particular loan. For example, if the initial nominal rate (RATE= option) is 6.0, ADJUSTFREQ=6, MAXADJUST=0.5, and the ESTIMATEDCASE=(6=6.5,
12=7.5), the actual nominal rates charged on the loan would be 6.0% initially, 6.5% for the sixth through the eleventh periods,
and 7.5% for the twelfth period onward.

specifies a fixed case analysis that assumes the rate will stay constant. The FIXEDCASE option calculates the ARM loan values
similar to a fixed rate loan, but the payments are updated every adjustment period even if the rate does not change, leading
to minor differences between the two methods. One such difference is in the way prepayments are handled. In a fixed rate loan,
the rate and the payments are never adjusted; therefore, the payment stays the same over the life of the loan even when prepayments
are made (instead, the life of the loan is shortened). In an ARM loan with the FIXEDCASE option, on the other hand, if prepayments
are made, the payment is adjusted in the following adjustment period, leaving the life of the loan constant.