How To Apply For CAT 2021 Visit iimcat.ac.in, click on ‘Register’ under ‘New Candidate Registration'. Enter your personal details, submit and generate user ID, password. Now login and fill the application form. Upload documents, pay the exam fee and submit the CAT 2021 registration form. Take a printout of the exam form. “After submitting the application form, candidates will receive a confirmation email. “In the event you do not receive a confirmation email after completion of the application process or have any query or concern, you can connect with the Candidate Help Desk by emai...