I am working with a financial product and am tinkering with a stored procedure of theirs that calculates an IRR. <BR>The string that I pass into the function is the listed below. The first part before the &#039;^&#039; is the dollar amount followed by a date and subsequently followed by another cash flow. <BR>Is there a financial function in T-SQL that can calculate IRR, which I suppose would be the same as the XIRR function within Excel. <BR><BR><BR>-150150^03/12/1997;-136^12/31/1997;-48055^11/18/1999;-1699^04/05/2000;-21029^12/31/2000;375512^12/31/2001