Dynamic MultiColumn SumIF Formula

All,

I'm having trouble with the following (see attached for example problem). I'd like to write a "sumifs-like" formula that can accommodate a multi-column sumrange based upon today's date and month.

For example, if sumifs criteria are met, the formula would sum column 1 through column x (column x's header would be today's month and fiscal year).

Any ideas? The example workbook should provide a more clear description of the problem.

Thanks in advance!