The eligibility criteria for pursuing a Bachelor of Commerce (B.Com.) degree at Mar Thoma College in India include the successful completion of 10+2 or equivalent examination from a recognized board. Students must have studied Commerce as a main subject or any other subject combination that includes Commerce, such as Business Studies, Accountancy, Economics, or Mathematics. Additionally, candidates should meet the minimum percentage requirement set by the college, which may vary from year to year. Admission is based on merit, and students may need to appear for an entrance examination or interview as part of the selection process.