CAT Form Filling 2026: Complete Step-by-Step Registration Guide
The CAT registration form takes 20 minutes to fill. A single mistake in it can cost you your entire exam cycle. Every year, students lose their CAT attempt because of an incorrect photograph size, a wrong category selection, or a missed fee payment deadline. The CAT form filling process is straightforward if you know what each field expects, but confusing if you are doing it for the first time. This guide walks you through every step of the CAT 2026 form filling process, field by field, with the exact documents you need, the exact fees involved, and the mistakes you must avoid at each stage.
CAT form filling happens online on the official CAT website, typically in August. You need a photograph, signature scan, marksheets (Class 10, 12, graduation), category certificate (if applicable), and a valid photo ID. The process has 6 steps: account creation, personal details, academic details, programme selection, photo/signature upload, and fee payment. Registration fee is approximately Rs. 2,400 (General) or Rs. 1,200 (SC/ST/PwD). Fill it once, correctly. The correction window is limited.
What Documents Do You Need for CAT Form Filling?
The biggest cause of CAT form filling delays is not having documents ready. Students open the registration portal, get halfway through, realise they need a specific marksheet or certificate, and abandon the form. By the time they return, the deadline pressure has increased and mistakes happen. Gather everything before you open the registration page.
| Document | Format | Why It Is Needed |
|---|---|---|
| Passport-size photograph | JPEG/PNG, white background, 10-200 KB | Displayed on admit card and used for identity verification at the exam centre |
| Scanned signature | JPEG/PNG, white background, 4-100 KB | Printed on admit card for verification |
| Class 10 marksheet | Physical or digital copy for reference | Date of birth verification |
| Class 12 marksheet | Physical or digital copy | Academic record verification |
| Graduation marksheets | All available semesters | Aggregate percentage calculation and eligibility check |
| Degree certificate | If graduated; final year students are exempt | Proof of degree completion |
| Category certificate | SC/ST/OBC-NCL/EWS/PwD, issued by competent authority | Fee concession and reservation eligibility |
| Valid photo ID | Aadhaar, passport, PAN, voter ID, or driving licence | Identity verification at exam centre |
The photograph is the most frequently rejected element during CAT form filling. It must be a recent colour photo with a white background, face covering 60-70% of the frame, and no sunglasses, caps, or heavy shadows. Get it right before registration opens. A rejected photo delays your application and adds stress during the correction window.
CAT Form Filling 2026: The 6-Step Process
The CAT form filling process follows a fixed sequence on the official website. Each step must be completed before you can proceed to the next. Here is exactly what happens at each stage, including the fields you will fill and the decisions you need to make. Understanding the complete CAT form filling flow before you start prevents mid-form confusion.
Account Creation and Login
Visit the official CAT website and create a new account using your email address and mobile number. You will receive an OTP for verification. Once verified, set a password and log in. This account is your portal for the entire CAT cycle, from registration through to scorecard download.
- Use a personal email you check regularly, not a college email that may expire
- Save your login credentials immediately after creation
- The registered mobile number receives all CAT-related SMS alerts
Personal Details
Enter your full name (exactly as it appears on your Class 10 marksheet or government ID), date of birth, gender, category (General/SC/ST/OBC-NCL/EWS), PwD status, nationality, and contact address. The name you enter here will appear on your admit card and must match the ID you carry to the exam centre.
- Name spelling must match your photo ID exactly, including middle names and initials
- Category selection determines your fee amount and cutoff eligibility
- OBC candidates must select OBC-NCL (Non-Creamy Layer), not just OBC
Academic Details
Enter your Class 10 board and percentage, Class 12 board and percentage, graduation university, degree type, aggregate marks or CGPA, and expected year of completion (if still studying). The CAT form requires your aggregate percentage across all semesters, not just the final year. If your university uses CGPA, enter the CGPA and the conversion formula will be applied.
- Check your CAT eligibility: General needs 50%, SC/ST/PwD needs 45%
- Use the aggregate across all semesters, not best semester or final year
- Final year students select "Appearing" and enter marks available so far
Students enter their CGPA in the percentage field or vice versa. If your university uses a 10-point CGPA scale, enter the CGPA value and select the CGPA option. Do not manually convert to percentage and enter that in the percentage field. IIMs apply their own conversion formula during shortlisting.
Programme and IIM Preferences
Select which IIM programmes you want to apply to. You can choose multiple IIMs and programme types (PGP, PGPX, etc.). You will also select up to 6 test city preferences in order of priority. The CAT exam assigns your test centre based on these preferences, so choose cities where you can comfortably reach the centre on exam day.
- Select all IIMs you are interested in. There is no extra fee per IIM selection
- Your first test city preference gets highest priority for centre assignment
- Choose cities with good exam infrastructure to avoid remote/poorly connected centres
Already know which IIMs you want? Check if your score is competitive.
See your predicted CAT score range →Photograph and Signature Upload
Upload your photograph and signature scan as per the specifications given in the CAT bulletin. The system validates file size and format on upload. If your file is rejected, resize it before re-uploading. Both images appear on your admit card and are used for identity verification at the exam centre, so ensure they are clear and recent.
- Photo: recent, colour, white background, JPEG/PNG, 10-200 KB
- Signature: black ink on white paper, scanned or photographed, 4-100 KB
- Preview both uploads before proceeding to payment
Fee Payment and Final Submission
Pay the registration fee online using credit card, debit card, net banking, or UPI. The payment must be completed within the registration window. An incomplete payment means your CAT form filling is not complete and your application will not be processed. After successful payment, download the confirmation page and save the transaction ID.
- Keep a screenshot of the payment confirmation
- The confirmation page is your proof of successful registration
- You will not receive a physical acknowledgment. Everything is digital.
Do not fill the CAT form on the last day of registration. Server traffic peaks on deadline day, causing timeouts and payment failures. Complete your CAT form filling in the first week of the registration window when the servers are least loaded and you have time to fix any issues.
CAT 2026 Registration Fee and Payment
The CAT registration fee is category-dependent. The fee covers your exam registration across all IIM programmes you select. There is no additional charge per IIM or per programme. Once paid, the fee is non-refundable, even if you do not appear for the exam.
| Category | Registration Fee (Approx.) | Payment Methods |
|---|---|---|
| General / EWS / OBC-NCL | Rs. 2,400 | Credit card, debit card, net banking, UPI |
| SC / ST / PwD | Rs. 1,200 | Credit card, debit card, net banking, UPI |
The fee amount is GST-inclusive. It may change slightly from year to year, but the structure (half-fee for reserved categories) has been consistent. Ensure your payment method has sufficient balance and is enabled for online transactions before you begin the CAT form filling process.
If your payment fails mid-transaction, do not attempt multiple rapid retries. Wait 30 minutes for the banking system to release the hold, then try again. If money was debited but the CAT portal shows payment as incomplete, keep the transaction ID and bank statement screenshot. Contact the CAT helpdesk with these details. Most failed-payment issues are resolved within 3-5 working days, but only if you have documentation.
CAT 2026 Expected Registration Dates
While the official CAT 2026 notification has not been released at the time of writing, the registration timeline follows a consistent pattern every year. Based on the CAT 2024 and 2025 cycles, here is the expected CAT 2026 schedule. Bookmark these dates so you do not miss the CAT form filling window.
| Event | Expected Date (CAT 2026) |
|---|---|
| Official notification | Third/fourth week of July 2026 |
| Registration opens | First/second week of August 2026 |
| Registration deadline | Second/third week of September 2026 |
| Correction window | 3-5 days after registration deadline |
| Admit card download | First/second week of November 2026 |
| CAT 2026 exam | Last week of November 2026 |
If you miss the registration deadline, there is no late registration or extension. The portal closes permanently at the stated time. Students who miss the window by even a few hours lose their entire CAT attempt for that year. Set a calendar reminder for the first day of registration and complete the process that same week.
The CAT form filling window is typically 4-5 weeks long. This sounds like plenty of time, but students routinely wait until the last 2-3 days. Early registration means you get first priority on test city preferences and avoid server crashes on deadline day. Aim to complete your registration within the first week.
Common CAT Form Filling Mistakes to Avoid
The CAT form filling process is not technically complex, but the consequences of mistakes are severe. A wrong category selection can disqualify you from reserved seats. A name mismatch between your form and your ID can deny you entry to the exam centre. Here are the most common errors and how to prevent them.
- Name mismatch with ID: Your name on the CAT form must exactly match the name on the photo ID you will carry to the exam. Check for spelling differences, middle name presence, and initials. If your Aadhaar says "Rahul Kumar" but you enter "Rahul K", you may face issues at the centre.
- Wrong category selection: OBC candidates must select OBC-NCL (Non-Creamy Layer). Selecting just "OBC" or "General" when you have an NCL certificate means you lose the reservation benefit. This cannot always be corrected after submission.
- Incorrect aggregate percentage: Students enter their final year percentage instead of the cumulative aggregate across all semesters. The CAT form asks for the overall aggregate. Check your university transcript carefully before entering.
- Photo rejected: Using an old photo, a selfie, a photo with coloured background, or a file that is too large or too small. Follow the specifications exactly as stated in the CAT bulletin.
- Payment failure on deadline day: Server crashes and bank gateway timeouts are common on the last day. If your payment fails, your registration is incomplete. Start your CAT preparation and registration early.
- Not saving the confirmation: After successful payment, download and save the confirmation page. This is your only proof of registration until the admit card is released weeks later.
Some fields cannot be changed even during the correction window. Category selection and programme choices are often locked after initial submission. Double-check these critical fields before clicking submit. Treat the submission button as final.
After Submission: Correction Window and Admit Card
Once your CAT form filling is complete and payment is confirmed, IIM opens a correction window 3-5 days after the registration deadline. During this window, you can edit specific fields like personal details, test city preferences, and upload a new photograph or signature. However, not all fields are editable. Category, programme preferences, and academic details may be locked after initial submission.
The admit card is released approximately 2-3 weeks before the exam date, typically in the first or second week of November. Download it from the same portal where you registered. Verify that your name, photograph, exam centre, slot timing, and other details are correct. If there is a discrepancy, contact the CAT helpdesk immediately. The admit card, along with your photo ID, is the only document you need on exam day.
With registration done, shift your focus entirely to preparation. You have roughly 3 months between the registration deadline (September) and the exam (November). Use this time for mock tests, revision, and section-wise improvement. Explore CAT previous year questions to build exam-day readiness.
Registration is step one. Preparation is what decides your score.
See the CAT 2026 preparation roadmap →The Registration Checklist
- Gather all documents before opening the form. Photo, signature, marksheets, category certificate, photo ID. Have them scanned and ready.
- The CAT form filling process has 6 steps: Account creation, personal details, academic details, IIM preferences, photo upload, fee payment.
- Registration fee: Rs. 2,400 (General/EWS/OBC-NCL) or Rs. 1,200 (SC/ST/PwD). Non-refundable.
- Fill the form in the first week of registration. Avoid deadline-day server crashes and payment failures.
- Triple-check name spelling, category, and aggregate percentage before submission. Some fields are locked after submit.
- Save your confirmation page and transaction ID. This is your only registration proof until the admit card arrives.
- After registration, focus on preparation. The 3 months between registration and exam day decide your score.
Registration Opens Soon. Be Preparation-Ready.
The form takes 20 minutes. The preparation takes months. Start building your CAT strategy now so you are not scrambling after registration.
Get Ready Before CAT 2026 Registration Opens
