CAT 2026 Registration Form Closing Tomorrow: Apply on iimcat.ac.in & Avoid These Common Mistakes

The CAT 2026 registration form is closing tomorrow, i.e., 15 September 2026 (5:00 PM). Candidates shouldn’t have to wait for the deadline to fill the CAT exam form; instead, they should be attentive now only to complete the CAT registration form with correct information.

Filling out the CAT 2026 registration form in the last minutes comes with several technical issues, such as server errors which restrict the loading of a form because many applicants will be filling out the application form, and that leads to a site crash, maybe you will upload incorrect information in urgency, etc.

Candidates have to visit the official portal iimcat.ac.in to complete the form before the deadline of 15 September 2026 (5:00PM). This blog gives you the comprehensive idea about how to fill out the CAT 2026 registration form, mistakes to avoid while filling the form, and what all documents you require. Candidates will get all the required information about CAT 2026 on this page.

Join iQuanta’s diversified student community for free and prepare with other 4.1L+ peers. Get access to 24*7 doubt-solving, mentorship, free webinars, etc., all at one single platform.

CAT 2026 Registration: Important Dates

This section covers all the important events related to the CAT 2026 registration form. The CAT application form 2026 was opened on August 03, 2026, and is approaching the end deadline, which is 15 September 2026 (5:00 PM). The CAT exam date is 29 November 2026 (Sunday), and the rest of the events are specified in the table given below.

Events	Date
CAT 2026 Notification Release Date	July 25, 2026
Registration Start Date	August 03, 2026 (10:00 am)
CAT 2026 Registration Last Date	September 15, 2026 (5:00 pm)
Form Correction Window	September 24 – 27, 2026 (Expected)
Admit Card Release Date	November 4, 2026
CAT Exam Date 2026	November 29, 2026 (Confirmed)
Answer Key Release Date	December 2026
CAT Result Date	December 2026

Documents Required For Filling CAT 2026 Registration Form

Candidates have to use these documents to fill out the CAT 2026 registration form.

Document	Required Dimensions / Format	Other Requirements
Scanned Passport Size Photograph	200 × 1200 pixels	Format: JPG/JPEG Age: Not more than 6 months old File size: Up to 80 KB Resolution: Less than 150 px/inch
Scanned Signature	80 mm × 35 mm or 8 cm × 3.5 cm	Format: JPG/JPEG Background: White File size: Up to 80 KB Resolution: Less than 150 px/inch
NC-OBC/SC/ST Certificate	PDF document	Download the certificate from the CAT website, enter the required details, self-attest and upload the scanned copy.
PwD Certificate	PDF document	Download the certificate from the CAT website, fill it, self-attest and upload the scanned copy.
Final Year Certificate	PDF document	It must be issued on the college/institution’s letterhead and certify the required marks criteria.

How To Fill CAT Registration 2026 Form?

The CAT 2026 registration will start on 03 August 2026 at 10:00 AM (Tuesday) online on the official website iimcat.ac.in. Candidates should follow these steps to complete the CAT Registration 2026 form before the missing deadline (15 September 2026, 5:00 PM (Tuesday)).

1. Go to the official IIM CAT 2026 website, iimcat.ac.in.
2. Visiting the homepage, candidates should click on the “Register” button.
3. Fill out the details for completing the new registration. Upon successful completion, candidates will get the respective “User ID” and “Password”.
4. The next step is to log in to the CAT 2026 Registration form by filling out the required fields.
5. Enter information under required fields such as personal details, academics, work experience, test city, and submit the CAT Registration 2026 after declaration.

Why Shouldn’t You Wait For The Deadline To Fill CAT Registration 2026 Form?

The last date for filling out the CAT 2026 registration form is tomorrow (15 September 2026, 5:00 PM). There are several drawbacks if you are not filling out the CAT registration form on time.

1. Candidates who are filling out the CAT 2026 registration form at the last minute face several technical issues, such as high web traffic, the official portal iimcat.ac.in may crash due to the high volume of traffic, and login access will shut down for you and not get extended after 5:00 pm. These technical issues will restrict you from filling out the CAT registration form on time, and there will be a probability you will miss the deadline. So you don’t have to wait for tomorrow to fill out the registration form for CAT 2026.
2. Rushing increases the risk of uploading blurry photos or incorrect category certificates. Most fields in the CAT Registration form cannot be edited later, meaning mistakes could permanently impact your CAT 2026 application.

What Should I Do if the Payment Fails During CAT Registration 2026?

Approximately 300,000+ aspirants every year for the CAT exam. The online registration process of the CAT exam is simple but consumes a lot of time. Thus, you should prioritise staying updated about the entire registration procedure, the CAT Exam Fees, etc. So far, we have given you an update about the registration fees for all the categories, i.e., General/EWS/NC-OBC/SC/ST/PwD, modes of payment and payment procedure. If by chance, you face a payment error, then here is the complete list of solutions for your understanding and reference. 

• Try again after 30 minutes: If no money is deducted, i.e., it is for at least 30 minutes before the next attempt. Carefully enter the card details and follow the on-screen instructions to make the payment. 
• Re-check your internet connection: Cross-check if there’s any kind of network issue. Staying connected to a poor network will disrupt your CAT exam fee payment procedure. During such errors, you can also try with other modes of payment. 
• Reach Out to Bank/CAT Helpdesk: If the transaction is complete and you still haven’t received any confirmation, then connect with the bank authorities. Also, address this issue to the CAT Helpdesk. 
• Collect Necessary Evidence: Take a screenshot if the payment was complete, but there was no confirmation message on the screen. This will act as a valid proof of support. Send an email to the CAT Helpdesk and the respective bank with supporting evidence. 
• Don’t Try Multiple Times: Trying to pay the fees multiple times despite initial failures can lead to double deductions. If you ever come across such instances, then you must wait for some time and try again. 
• Opt for a Different Payment Method: Prefer switching to a different payment method if there’s a constant error with the existing payment mode. The second time, enter the payment details carefully, cross-verify and then try to pay the fees for the CAT exam online. 

CAT Registration 2026 Form Fees

All the candidates have to pay the CAT registration fee as per their categories. Without successful payment of the fee, the application will not be accepted for further stages. The fee is non-refundable and has to be paid in online mode. The category-wise CAT registration fee is stated below in the table. 

Category	CAT Exam Fee
General, EWS and NC-OBC	Rs. 2,700
SC, ST and PwD	Rs. 1,350

CAT Registration 2026: Conclusion

Filling out the CAT 2026 registration form is an important step which candidates should complete if they are sitting for the CAT 2026 examination. The last date to register for the CAT exam 2026 is 15 September 2026 (5:00 PM). It is crucial that candidates should fill out the CAT registration form on time without facing any last-minute hassle.

CAT 2026 Registration FAQs