Posted by Randy (SD) on April 14, 2004 at 12:30:31:
I use TValue for Windows, it can do any cash flow calculation imaginable. I believe it is available on this web site for around $149.
http://www.creonline.com/catalog/s-102.html
Or just do a google search for TValue for Windows.
I just played with a step calculation, $100,000 at 8% interest payments starting at $500 and increasing $50/month the loan was fully amortized in 235 months instead of a typical thirty-year/360 months. Tvalue for Windows can do it all.