CAT 2024 Registration Closes on September 13, 2024. Check How to Fill CAT Registration Form error free, Preview and Edit Process, required documents, CAT Exam Fees, how to pay CAT Fees, Key dates. Last year 3.30 lakh candidates applied for CAT exam. If you choose to register in last days, it may become difficult as there may be technical glitches and the payment of you registration fee may get stuck. So, it is better to complete the process much before the last date. CAT Registration Fees among other details.