CAT Application Form 2025: Common Admission Test (CAT) is the largest MBA entrance exam for MBA admission in 21 IIMs and other top B-schools. CAT 2025 exam date is November 30, 2025. CAT Application Form filling start date is August 1, 2025 (expected). CAT Application Form Fees is Rs 2500. First step is to visit CAT Website -- IIMCAT.ac.in. Look for section that says ‘New Candidate Registration’. You need to click this button to Register as New User. Once you click ‘Register’, a new page titled ‘Register to get User ID and Password’ page will open.