A partial list of my data is below. A2 - A3800 are dates, B2 - J3800 is the
data. I need a total by month, so I need to know the total for July, August,
etc. Sumproduct works if the data is in 2 columns but not with the dates in
a column and the data in a range.

Your help is appreciated.

A1 B1 C1 D1
Date Acct 1 Acct 2 Acct 3
7/1/09 $56.00 $34.00 $130
7/10/09 $57.00 $76.00 $230
7/13/09 $95.00 $33.00 $630
8/12/09 $78.00 $0.00 $270
8/16/09 $39.00 $79.00 $830
8/31/09 $87.00 $3.00 $278