I am trying to sum accounts receivable for individual salesmen. I have gotten to the point where I can add if the check box under [Check Received] is marked but I do not know how to sum if a check box is unmarked. So far my formula is returning 0 when it should be returning a over $100,000. This is my formula so far, =SUMIFS([Revenue Amount]1:[Revenue Amount]321, Broker1:Broker321, "Tyler", [Check Received]1:[Check Received]321, "No")