Commerce is a multidisciplinary stream which encompasses the study of Law, Management, Accounting, Finance and Human Behaviour. Commerce education equips students with analytical, communication and problem-solving skills to effectively identify issues and find efficient and practical solutions to everyday business problems. Commerce graduates are employed in industries all over the world, including energy and resources, accounting, financial and insurance services, consulting, information management and marketing and communication. They also gain employment in the public sector in fields such as government administration, education and training, healthcare, transportation, etc.

The Department of Commerce, established in 1973, offers two under-graduate degree courses - B.Com. (Hons.) and B.Com., and teaches one paper of Entrepreneurship and Small Business to the students of BA Programme. As per NEP 2020, value added and skill enhancement courses like Digital Marketing, Statistics with R, Financial Literacy, Personal Financial Planning and The Art of Being Happy, have been introduced by the Department, thereby adding value to the employability skills of the students.

The Commerce Association, Gargi College offers an assortment of opportunities for students to develop holistically while enjoying the learning process. The Annual Commerce Festival “Cascade” is organised on a topical theme, incorporating speaker session and inter-college competitions.  Multiple level-up sessions are organized through the year by The Commerce Association.

Comascent, the bi-annual magazine of the Department, is curated by the Comascent Editorial team. It provides an opportunity for students to express their views on diverse topics and showcase their creativity. The Comascent team also releases its yearbook ‘Reflections’ on the College Day which includes a compilation of the data of the graduating batch. The yearbook is given as a souvenir to the outgoing students. 

To enhance research skills of students, Pathfinder Competition is conducted every year. Participating teams are guided by Faculty Mentors, and the Competition ends with presentations in front of an external jury and winners are awarded prizes.

The Department is celebrating its Golden Jubilee in 2023, and this year the Department's Alumnae Association “Aikyam: The Gargi ComConnect” has also been constituted in June 2023, to maintain and nurture the connection of alumni with their alma mater.