Visit the official CAT website when registration opens
Create a new user account using your email ID and mobile number
Log in with your registered credentials
Fill in the CAT application form with personal, academic, and contact details
Upload the required documents in the prescribed format
Select your preferred exam cities
Pay the application fee online
Review all details carefully before submission
Submit the application form
Download and save the confirmation page or application receipt
Check your email and SMS for registration confirmation and updates