=DATE(YEAR(B3),MONTH(B3)+1,0)
Format to suit.
--
David Biddulph

"Lindy" wrote in message
...
Using Excel 2003. (Australian Date Format).

In Cell B3, I want to type the month and year, eg: April 2008.
In Cell E33, I want to put =B3 so that the result appears as the last day
of
the month, eg: 30/04/2008.

In Cell B3, I put a Custom Date Format of mmmm yyyy.
How do I get E33 to return me the last day of the month entered?

Lindy