Institute of Cost and Works Accounts of India offers the ICWA course. After b.com you can directly appear for intermediate course of it you will be exempted for the Foundation level. Following are the details of it:

It has following three stages:

Foundation
Intermediate
Final

Eligibility:
The applicant should have cleared 10+2 from recognized board or equivalent qualification. Graduate can skip the foundation level. As you have completed b. com you will be exempted for the foundation level.

Documents required at the time of admissions:
10th & 12th Certificate and Mark sheet
Any Bachelor Degree completion proof