daterng might be $a$2:$a$200 with properly formatted dates
sumrange might be $b$2:$b$200
enter the formula by holding down the ctrl key &the shift at the same time
as you touch the enter key.

--
Don Guillett
SalesAid Software

"Jani" wrote in message
...
Don - Thanks for the quick response but I don't understand the formula.
Would
you explain please?

"Don Guillett" wrote:

modify this to suit your needs and array enter by ctrl+shift+enter

=AVERAGE(IF((MONTH(daterng)=1)*(MONTH(daterng)<MO NTH(TODAY())),sumrange))

--
Don Guillett
SalesAid Software

"Jani" wrote in message
...
Need some quick help! In spread sheets the data is already entered for
2005
by months. I need a formula to average YTD data for a given month end.
For
ex
if current month is April, need to average Jan-April, If cm is May, avg
Jan-Apr, if cm is June, avg Jan-May, etc. I tried an If statement but
apparently Excel won't allow that many IF's. As always, very much
appreciate
your assistance!