The major demand associated with the aviation industry is to reduce the total drag and to increase the CLmax of the wing. The tapered wing was found to have lesser pressure drag but it also has a pitfall of formation of span wise flow which is a major drawback. Obstructing the span wise flow plays a challenging part in the tapered wing which can be done with addition of boundary layer potential fences. The attachment of wing fences disrupts the span wise flow which results in improved aerodynamic efficiency of the aircraft. In this experimental investigation we interpret the installation of single and double fence with different dimensions on 2 different taper ratio wing. From results, we infer that the attachment of single fence was effective in increment of CLmax and installation of double fence were effective in the total drag reduction. Employment of single fence in tapered wing shows an 9% (approx) increment than the base models investigated in this paper. Thus, the wing fence is a very potential passive device that can provide major aerodynamic performance and can improve the efficiency of civil aircrafts.