Tax Audit Report

I think, you can give single report, as you are giving tax audit report for the person than his business (as it a proprietory concern)...

first u shud clear it out whether the total turnover if both the concerns is INDIVIDUALLY above Rs. 40 crores.

 if yes,, then. u shud file the separate tax audit report bcz, other than being a single owner there are many other points affecting the same..

 at the end u hav to disclose the GP , NP & stock turnover ratio  which cnt be same if the sales, closing stock & net profit figure varises from each other

 REGARDS

the propreitory concern should individually have total turnover above 40 lakhs otherwise as abhiram said it is not accurate to find out the gross profit and net profit ratio