Mark,

You need to convert your date strings to dates:

=SUMPRODUCT((RBS!A2:A9=DATEVALUE("1/4/2008"))*(RBS!A2:A9<=DATEVALUE("31/3/2009"))*(RBS!M2:M9="Directors
Loan")*RBS!L2:L9)

Or use cell references....

HTH,
Bernie
MS Excel MVP


"Mark" wrote in message
...
I am having trouble with the following formula:

=SUMPRODUCT(--(RBS!A2:A9999="1/4/2008"),--(RBS!A2:A9999<="31/3/2009"),--(RBS!M2:M9999="Directors
Loan"),RBS!L2:L9999)

It is giving me a "0" as the result. I know this is not the case.

Column A is the date range
Column M is the description of the item
Column L is the cost for the item

If you should have an answer to the above question please let me have it in
the above format for ease of understanding. Many thanks in advance.

Mark