It is different for different colleges. You can visit the sites of various colleges offering B.com and then check their fee structure.

Top colleges in Mumbai:

Institute of Distance and Open Learning

University of Mumbai

Amity University, Mumbai

St. Andrew's College of Arts, Science, and Commerce

K.C. Law College

Class                          Fees

F.Y.B.Com.                 Rs. 5,537

S.Y.B.Com.                 Rs. 4,917

T.Y.B.Com.                 Rs. 6,115

T.Y.B.Voc - T              Rs. 6,345

T.Y.B.Voc - SD            Rs. 7,366

Under the Government of India Scholarship scheme for BC students (SC/ST/DT/NT/OBC), certain Scholarships / Freeships are provided to the students who have the certificate issued by the State Government.