Sum Values in a Table Matching Specific Row and Column Values

Hey everyone! I've been coming here for quite a while and I can say that I've learned a lot just by reading other posts, so first let me say thanks to everyone that contributes! I'd love to contribute to the forums myself as I gain experience. Now, for my question/problem that I've come here today for:

I have a workbook with multiple tabs that contain various tables full of data from different sources. I'm summarizing everything on the first tab in different columns depending on what I need to show. I'm breaking things down by month and each cell pulls in data from somewhere to summarize the activities. I have one tab containing the information I need and right now it's all included in my monthly breakout where this formula is used:

=IF(IFERROR(SUM(INDEX('Report'!$G$2:$V$20000,,MATCH("001/2014",'Report'!$G$2:$V$2,0))),0),SUM(INDEX('Report'!$G$2:$V$20000,,MATCH("001/2014",'Report'!$G$2:$V$2,0))),SUM('Annual Plan'!$B$22+'Annual Plan'!$B$23))

The data on the Report sheet has different information in columns A through F and then G through V give the dollar amounts by period. What I want to do is to isolate a few of the items where the value in column A is a specific value and then also exclude them from the cells where the above formula is being used.

So, just as an example...on my summary view I have E1:E12 showing January through December and the total values for that month. Let's say that right now, E1 shows $100,000 but includes $10,000 that I want to isolate in F1:F12 (depending on the month). So now, E1 would show $90,000 and F1 would show $10,000. Hope that all makes sense! I attached an example with the Report tab showing random data in the layout that I get from my reports and the Summary tab showing a simplified view of what I'm doing on my summary tab.

If you need more information on anything, let me know.

I really appreciate any input and look forward to your suggestions/solutions!

Dustin