Proc LOAN a part of the SAS ETS module may be what you need. I would take this question to the SAS Sales people, they'll want a client and can be very helpful with requirements. If you could provide an example dataset I suspect they would be very helpful. I know that when I bought my house I ran quite a few what if situations on interest rates, prepayment and amortization schedules through Proc Loan. I don't know enough finance specific stuff but SAS/ETS(R) 9.3 User's Guide may give you more information about possibilities.
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