Does this work?

=SUM(MONTH(B5:B12)=MONTH(B15),C5:C12)

Once entered don't just hit enter, use Ctrl+Shift+Enter and it should
generate an array formula.

Regards,
A


"stuarthow" wrote:


Hi

Need some help with the SUMIF() function on Excel 2003 please:

Im using this function as per example €“

=SUMIF(month(B5:B12),month(B15),C5:C12)

where B5:B12 are regular dates (dd/mm/yyyy), B15 is a €˜month date (mmm
yyyy) and C5:C12 are ordinary numbers.

When entered, I get returned the warning box €˜The formula you typed
contains an error

Help would be gratefully welcome.
Stuart


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