In my report I have a group with data that is in my header table and in the detail portion of the report I have data from my detail table. Header data is a receipt total and Detail data is all the items bought...the problem I'm having is when I sum up my items. The items are in the detail portain (and detail table) and the total is fine, but the sales tax is the header table...so for every detail item the sales tax gets added...is there a way I can calculate this so the sales tax is only input once...maybe a sub-report?...any suggestions?

thanks