There are many options you can opt, It depends on your interest & Career goal. After completing your Graduation with B.com, Some of the options you can opt Chartered Accountancy, Company Secretaryship, Cost Accountancy course. These courses are very much related to the commerce field and all are in very high demand and also give you good career, job profile and pay packages.

The other options you can choose Post Graduation course related your field like M.com, Master's in Finance and Control as an option in the field of Commerce. You can also also go for MBA programme as per desired specialization, If you wish to enter into the corporate world.

Commerce students can also join the Indian Economic Service or Indian Statistical Service. The Union Public Service Commission conducts this entrance exam.

Good Luck!