CAT 2026 Form Correction: Expected Late September, Editable Fields and How to Edit

The CAT 2026 Form Correction Window has not yet been officially announced. IIM Indore, which is conducting the Common Admission Test (CAT) 2026 on November 29, 2026, is expected to activate the correction portal at iimcat.ac.in in late September or early October 2026 — shortly after CAT 2026 registration closes on September 15, 2026. As of today (August 14, 2026), registration is open (August 3 – September 15, 2026), and the form correction facility will be announced separately by IIM Indore.

The correction window is a brief, one-time opportunity to fix specific errors in your submitted application. You are expected to be able to update your photograph, signature, and test city preferences — the same fields editable in past CAT cycles. Name, date of birth, category, and other personal details are locked after submission and cannot be changed through the portal. IIM Indore charges no additional fee for making corrections in the CAT form.

Source — iimcat.ac.in (Official CAT 2026 Website, IIM Indore)

• The CAT 2026 correction window is expected in late September or early October 2026 at iimcat.ac.in — exact dates to be announced by IIM Indore after registration closes on September 15.
• You can edit your photograph, signature, and test city preferences during the correction window, based on IIM Indore’s consistent policy across recent CAT cycles.
• Name, date of birth, application number, and category are permanently locked — they cannot be changed through the correction portal under any circumstances.
• The correction window is completely free of charge — IIM Indore does not levy any additional fee for making corrections in the CAT application form.
• CAT 2026 is scheduled for November 29, 2026; based on past cycles, the correction window is expected to last only 3–4 days.
• This is your only chance to fix errors in the submitted form — no corrections are permitted after the window closes, and IIM Indore does not provide extensions.

The Application Form Correction Facility is a one-time opportunity for registered students to rectify specific errors in their submitted CAT form. Students are advised to make corrections carefully within the stipulated window, as no further changes will be permitted once the deadline passes. — Official CAT 2026 Information Bulletin, IIM Indore

What is CAT Correction Window 2026?

The CAT 2026 Form Correction Window is an official, time-limited facility provided by IIM Indore that lets registered students revisit and correct specific fields in their submitted application. It is activated on the official CAT portal, iimcat.ac.in, for a brief period — typically 3–4 days — after the close of registration. The window is separate from the registration process and requires no additional payment.

The correction window is your only opportunity to fix errors in your submitted CAT form — no changes are possible after it closes. IIM Indore does not provide any alternate correction route, extension, or exception for students who miss the deadline. If you discover a critical error in a locked field such as date of birth or category, you must contact the CAT helpdesk directly, and a resolution is not guaranteed.

The window is especially important for students who uploaded a poor-quality photograph or signature, or those who want to reconsider their test city preferences. CAT 2026 will be held in approximately 170 cities across India on November 29, 2026 — selecting a convenient test city reduces exam-day travel stress and ensures you arrive composed.

CAT Correction Window 2026: Dates

IIM Indore has not yet announced the official CAT 2026 correction window schedule as of August 14, 2026. In CAT 2025, the correction window ran from October 4 to October 7, 2025 — approximately 19 days after registration closed on September 15, 2025. Since CAT 2026 registration also closes on September 15, 2026, and accounting for a similar gap, the correction window is expected in late September to early October 2026. The official announcement will be made at iimcat.ac.in; check the portal regularly after the registration deadline passes.

Note — Correction window dates above are projections based on historical CAT patterns (CAT 2025: October 4–7, 2025) and have not been confirmed by IIM Indore. The official schedule will be published at iimcat.ac.in — that is the only binding source for 2026 dates.

How to Edit the CAT Application Form?

Once the CAT 2026 correction window is live at iimcat.ac.in, log in and navigate to the correction section of your dashboard. Before you begin, review the list of editable and locked fields below — locked fields will not appear as editable even after login, and trying to change them through the helpdesk yields uncertain results.

What Can Be Edited in CAT 2026 Application Form?

Based on IIM Indore’s consistent policy across CAT 2024 and CAT 2025, the following fields are expected to be editable during the CAT 2026 correction window:

What Cannot Be Changed in CAT 2026 Application Form?

Name, date of birth, and application number cannot be changed under any circumstances. The fields listed below are permanently locked the moment you submit the CAT 2026 registration form. If any of these contain a genuine error, contact the CAT helpdesk at cat2026_helpdesk@iimidr.ac.in immediately with supporting documentary proof.

Step-by-Step Guide to Edit CAT 2026 Application Form

Follow these steps once the CAT 2026 correction window is live at iimcat.ac.in. Complete all corrections before the window closes — partial edits that are not saved will not be applied.

1. Visit the official CAT 2026 website: iimcat.ac.in. Look for the "Application Form Correction" or "Edit Application" link on the homepage or in the news/notifications section.
2. Log in using your registered User ID (email or application number) and password. If you have forgotten your password, use the "Forgot Password" option and reset via your registered email or mobile number.
3. From your dashboard, click the correction or edit option linked to your CAT 2026 application form.
4. Review your current application details to identify which fields you want to update — photograph, signature, or test city preferences.
5. To update photograph or signature: click "Upload," select the corrected JPG file from your device, verify it meets the size and format requirements, and confirm the upload.
6. To update test city preferences: select your updated preferred cities from the dropdown menu. Arrange them in priority order — City 1 is your top choice, City 5 is your last fallback.
7. Review all proposed changes on the preview or confirmation screen. Verify that the updated information is accurate before proceeding.
8. Click "Submit" or "Save Changes" to finalize your corrections. Wait for the success confirmation before closing the browser.
9. Download and save the updated application confirmation page or PDF immediately. This is your proof that corrections were successfully recorded by IIM Indore.

CAT Form Correction 2026: Fee

IIM Indore does not charge any additional fee for using the CAT 2026 form correction facility. This policy has remained consistent across all recent CAT cycles, including CAT 2025. Once you save your corrections, there is no payment step — changes are recorded directly. The original registration fee (₹2,700 for General/OBC-NC/EWS and ₹1,350 for SC/ST/PwD) was a one-time payment and remains non-refundable, regardless of whether you use the correction window.

Note — The Nil correction fee is based on IIM Indore’s policy for recent CAT cycles. If the authority announces a revision for CAT 2026, this page will be updated. For the most current fee information, refer to the official information bulletin at iimcat.ac.in.

CAT Correction Window 2026: Errors & Problems

The correction window is short, high-traffic, and non-extendable — technical issues during this period can cost you your only chance to fix errors. The table below covers the most common problems students encounter and the fastest ways to resolve them.

CAT Helpdesk

IIM Indore operates a dedicated helpdesk for CAT 2026 — covering registration, form correction, admit card, exam centre queries, and results. If you encounter any issue you cannot resolve through the portal, contact the helpdesk through the official channels listed below. Do not rely on third-party portals, social media accounts, or coaching institute forums for sensitive correction-related decisions.

Always use only the official channels — iimcat.ac.in, the toll-free helpdesk number (1800 210 0175), and the official email — for all CAT 2026 correction-related queries. Misinformation from unofficial sources can lead to missed deadlines, rejected uploads, or incorrect city selections that cannot be reversed after the window closes.

CAT Form Correction 2026: Important Tips

The correction window is short, non-extendable, and simultaneous for all registered students — thousands of students hit the portal at once. Use the tips below to correct your form smoothly without last-minute panic.

1. Prepare all corrected files before the window opens. Scan, resize, and verify your photograph (JPG, 20–50 KB) and signature (JPG, 10–30 KB) in advance. When the portal goes live, you should only need to upload — not photograph, crop, and compress files under pressure.
2. Act on Day 1 of the correction window. Server load is highest on the last day when students rush the portal. Starting on Day 1 gives you two or three more days to troubleshoot upload failures, login issues, or slow page loads before the deadline.
3. Complete all corrections in a single session. Logging out partway through may not preserve unsaved changes. Update your photograph, signature, and test city preferences — then click Submit — before leaving the page.
4. Download the updated confirmation PDF immediately after submitting. This is your proof that corrections were recorded by IIM Indore. Keep a copy in both digital and printed form in case of any post-exam discrepancy during document verification.
5. Think carefully before revising test city preferences. Choose cities you are certain you can travel to on November 29, 2026. Your first preference has the highest priority in IIM Indore’s allotment algorithm — lower preferences are used only if seats in your top choices are exhausted.
6. If your name or date of birth is wrong, contact the helpdesk immediately — do not wait. These fields are locked in the portal. Email cat2026_helpdesk@iimidr.ac.in with your application number and supporting documents as early as possible. Waiting until the exam day makes the situation unmanageable.
7. Use Chrome or Firefox in incognito/private mode. Stored cookies and cached data from earlier browsing sessions can cause login errors or upload failures. Incognito mode ensures a clean, fresh session each time you access the correction portal.
8. Avoid mobile data and public Wi-Fi for file uploads. An interrupted cellular connection can silently fail mid-upload without a clear error message. Use a stable home or office broadband connection to ensure photograph and signature files upload completely and correctly.