You could use another formula to achieve the same result

=sum(ipmt(5%/12,row(indirect(A1&":"&B1)),360,-100,000))
where A1 is the start period and B1 is the end period
Array enter it (ctrl+shift+enter)


"Steve @ Keane" <Steve @ wrote in message
...
The CUMIPMT function returns #NAME, even though the Analysis ToolPak is
loaded. I am using Excel 2000, SP3. Any ideas? Thanks ...