Robert is correct.
Jason, here's what you do. Log in to the IB Acct Management page. Go to Statements. To the right, you'll see Create Custom Statement. Click that. On the next page, give the statement a name (maybe Commissions and Fees). Under "period," choose Daily. Then, in the "sections" at the bottom, click Commission Details. A check will appear showing you've selected that one. It is the only one you need to select. Next, mark any of the "Section Configurations" you want. You don't have to choose any. Click "continue" at the bottom right. You'll then get to review you choices. Click "create" at the bottom right. Next page, click OK.
Next you'll be taken back to the Statements page. You'll see the custom statement off to the right. Click the little arrow to the right of the statement name. It will run the statement for whatever date is in the field (in the list of fields).
This report will show you the total commission as well as the breakdown of broker charges and third party charges.
Hope that helps!