CAT registration is conducted online through the official CAT website. The registration process typically begins in early August and continues until September. Candidates must create a login ID, fill in personal, academic, and work experience details, select test cities, upload scanned photographs and signatures, and pay the application fee. The application fee is usually higher for General, EWS, and NC-OBC candidates and lower for SC, ST, and PwD candidates. Fee payment can be made via debit card, credit card, or net banking.