Hello,

The minimum education requirement to be eligible for IIT JAM 2021 is Bachelor's degree in the relevant field. Candidates who have passed in the exam or currently in the final year of the qualifying exam are eligible to apply for IIT JAM. So yes, you can apply next year if you are in final year of the qualifying exam or already passed in the qualifying exam. To check the program wise eligibility click the link below

https://university.careers360.com/articles/jam-eligibility-criteria