I want to "sumifs" a column matches a criterial AND another column matches a certain date

I have a lists of amounts, with dates, with two different names.
For example:

A B C
Doug $100 6/3
Doug $300 5/3
Larry $200 6/1
Larry $100 5/4
Doug $400 5/3
Larry $40 6/7

So...I know =sumif(a1:a6,"Doug",c1:c6) That is how much Doug makes. $800

I want to know how much each person totals in each month.

BUT...If column A=Doug and column c is < or = 5/31 what is the total of column B? Meaning Doug made $700 is May....then I want to know what he made in June....which would be $100

How the heck do I do that?

PERFECT! This is exactly what I needed! Thanks so much
You are a lifesaver ~

Originally Posted by benishiryo

hi kathyp, welcome to the forum. assuming column C are real dates, try:
=SUMIFS(B1:B6,A1:A6,"Doug",C1:C6,"<="&"31May2013")

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