Last Updated: September 16, 2026
If you’ve already submitted your CAT 2026 application and just noticed a blurry photograph, a shaky signature scan, or a test city you’d rather change, don’t panic — IIM Indore opens a short CAT 2026 form correction window for exactly this purpose, right after registration closes. This guide covers the expected correction window dates, exactly what you can and can’t edit, the fee (spoiler: there isn’t one), and a step-by-step walkthrough so you’re ready the moment the portal goes live.
If you haven’t submitted your form yet and want to avoid needing this window at all, our 7 mistakes to check before you submit your CAT 2026 form guide is the better starting point — it covers pre-submission checks in detail. This guide picks up right after that: what to do once your form is already in.
Quick Summary: CAT 2026 Correction Window at a Glance
| Detail | Information |
|---|---|
| CAT 2026 registration closes | September 22, 2026, 5:00 PM (extended from September 15) |
| Correction window opens (expected) | Early to mid-October 2026 (tentative — not yet officially announced) |
| Correction window duration (typical) | 3–4 days |
| Correction fee | Nil — free for all categories |
| Editable fields | Photograph, signature, test city preference |
| Non-editable fields | Name, date of birth, category, email ID, mobile number, academic details |
| Number of correction attempts | One-time window, usually allows multiple edits within the open period |
| Where to correct | Official CAT 2026 login portal at iimcat.ac.in |
| CAT 2026 exam date | November 29, 2026 (Sunday), 3 slots |
Keep this table bookmarked — we’ll update it the moment IIM Indore releases the confirmed schedule.
What Is the CAT 2026 Form Correction Window?
The CAT form correction window is a short, one-time facility that opens after the registration deadline closes. It exists because, out of the lakhs of candidates who apply, a fair number end up with a photo that doesn’t meet the size specification, a signature that’s too dark or too light, or a test city they want to reconsider. Instead of making candidates start over, IIM Indore reopens the login portal for a few days, allowing them to correct these specific details before generating the admit card.
It’s worth being clear about what this window is not: it isn’t a second chance to re-fill your entire form. The form locks your name, date of birth, category, email address, and mobile number as soon as you submit it, and you cannot change these details during the correction window. Think of it as a narrow repair window for a handful of fields — not a form reset.
Since CAT 2026 registration was extended by a week (from September 15 to September 22, 2026), the correction window is also expected to shift slightly later than in a typical year. IIM Indore hasn’t confirmed exact dates yet, but based on how the last few cycles played out, here’s what the pattern tells us.
Check the extended last date and latest updates here: CAT 2026 Last Date Extended: What Aspirants Need to Know
CAT 2026 Correction Window: Expected Dates
Important: IIM Indore has not officially announced the CAT 2026 correction window dates as of this update. What follows is a data-backed estimate based on the last five CAT cycles — always cross-check the live schedule on iimcat.ac.in before you make plans.
| CAT Year | Registration Closed | Correction Window | Gap After Registration |
|---|---|---|---|
| CAT 2022 | Mid-September 2022 | September 23–26, 2022 | ~9 days |
| CAT 2024 | September 13, 2024 | September 27–30, 2024 | ~14 days |
| CAT 2025 | September 20, 2025 (extended) | Opened October 4, 2025 | ~14 days |
| CAT 2026 | September 22, 2026 (extended) | Expected early–mid October 2026 | ~10–14 days (projected) |
The pattern is fairly consistent: IIM Indore typically activates the correction facility 10 to 14 days after registration closes, and keeps it open for 3 to 4 days. Applying that same gap to this year’s extended deadline of September 22 puts the most likely window somewhere in the first two weeks of October 2026 — but treat this strictly as an estimate until the official notice drops.
What Details Can Be Edited in the CAT 2026 Application Form?
This is the part candidates get wrong most often — the correction window is a narrow, specific fix, not a full re-edit. Here’s the breakdown based on how the facility has worked in every recent CAT cycle.
| Category | Fields |
|---|---|
| Editable during correction window | Photograph, signature, test city preference (order/choice) |
| Locked — cannot be edited | Name, date of birth, category (General/OBC-NC/EWS/SC/ST/PwD), email ID, mobile number, academic qualification details |
| Requires helpdesk/query route (not the correction portal) | Genuine, provable errors in name or date of birth |
If your photograph doesn’t meet the required pixel size or your signature scan looks smudged, use the correction window to re-upload the correct files and fix them. Same goes for test city: if you want to reorder your preferences or swap one city for another (subject to seat availability), you can do that here too.
Step-by-Step Process: How to Correct Your CAT 2026 Application Form
Once the correction link goes live, here’s the process you’ll follow. It takes most candidates under 10 minutes if their new photo/signature files are ready in advance.
- Visit the official CAT 2026 website at iimcat.ac.in — this is the only legitimate portal; don’t trust third-party “correction” links shared on social media.
- Click on “Registered Candidate Login” and sign in using the User ID and password you created during registration.
- Locate the “Application Form Correction” link, which will only be visible once the window is officially active.
- Edit the permitted fields — upload a new photograph or signature if needed, or update your test city order.
- Double-check every change before saving. There’s no confirmation SMS reminding you to review, so this step matters.
- Click Save, then Submit the corrected form.
- Download and print the updated confirmation page for your records — you may need it at your exam center or for future reference.
A tip that saves a lot of last-minute stress: get your new photograph and signature scans ready before the window opens, in the exact specifications mentioned in the CAT 2026 information bulletin (usually JPEG format, specific pixel dimensions and file size limits). That way, you’re not scrambling to scan documents in the final hours of a 3–4 day window.
Is There a Fee for CAT 2026 Form Correction?
No. IIM Indore does not charge any additional fee for the form correction facility, and this applies uniformly across all categories — General, EWS, NC-OBC, SC, ST, and PwD. You’ve already paid your registration fee (₹2,700 for General/EWS/NC-OBC, ₹1,350 for SC/ST/PwD); the correction window doesn’t add to that.
What If You Have an Error in a Locked Field?
If you spot a genuine mistake in a field the correction portal doesn’t let you touch — say, a typo in your date of birth that doesn’t match your official documents — the correction window itself won’t help. In such cases, IIM Indore generally expects you to raise a query through the official candidate grievance/query facility on the portal, along with supporting documents. There’s no guarantee of resolution, so the real fix is prevention: cross-verify every entry against your original certificates before you submit the primary form, not after.
CAT 2026 Correction Window vs Registration Window
Candidates often mix up these two stages, so here’s a direct comparison.
| Aspect | Registration Window | Correction Window |
|---|---|---|
| Purpose | Submit your CAT 2026 application for the first time | Fix limited errors in an already-submitted form |
| Who can access it | Any eligible candidate | Only candidates who already submitted a form and paid the fee |
| Fields you can touch | Entire form (personal, academic, city, documents) | Only photograph, signature, test city preference |
| Fee | ₹2,700 / ₹1,350 depending on category | Nil |
| Dates | August 3 – September 22, 2026 (extended) | Expected early–mid October 2026 (tentative) |
| What happens if you miss it | You cannot apply for CAT 2026 this cycle | Your form stays as originally submitted — no further edits possible |
Common Mistakes to Avoid During the Correction Window
- Waiting until the last day. A 3–4 day window closes fast, and server load typically spikes in the final hours.
- Uploading a non-compliant photo/signature again. Check the exact pixel and file-size specification in the CAT 2026 bulletin before re-uploading — a second rejected file wastes your limited attempts.
- Assuming academic details can be fixed here. They can’t; this window is strictly photograph, signature, and city preference.
- Not downloading the updated confirmation page. Always save a fresh copy after any correction — don’t rely on the older one.
- Trusting unofficial correction links. Only iimcat.ac.in is authentic; report suspicious links to the official CAT helpdesk.
What Happens If You Miss the CAT 2026 Correction Window?
If the window closes and you haven’t made your changes, your original submitted form becomes final — there’s no second correction opportunity, no late window, and no exception process for candidates who simply missed the deadline. The authorities will generate your admit card using the details you submitted before the correction window closed. Set a calendar reminder as soon as IIM announces the official dates on iimcat.ac.in.
How to Prepare While You Wait for the Correction Window
There’s no reason to lose exam-prep momentum while you wait for the official announcement. If you’ve already registered, this is a good stretch to lock in a study routine — you can check where past scores have historically landed candidates or start practicing daily with CATMOCK’s free daily practice sets and CAT previous year question papers. For the complete registration-to-result timeline in one place, see our CAT 2026 complete guide.
Summary
- CAT 2026 registration closed (extended) on September 22, 2026, 5:00 PM.
- The correction window has not been officially announced yet — based on the last few cycles, expect it in early-to-mid October 2026.
- Only photograph, signature, and test city preference can be edited; name, DOB, category, email, and mobile number are locked.
- The correction facility is completely free across all categories.
- Missing the window means your original submitted form becomes final — there’s no further edit opportunity before the exam.
- Always verify dates directly on the official site, iimcat.ac.in, since third-party estimates (including the table above) can shift once IIM Indore’s notice is out.
Frequently Asked Questions
Q1. When will the CAT 2026 form correction window open?
IIM Indore hasn’t announced the exact dates yet. Based on the last five CAT cycles, it’s expected to open roughly 10–14 days after the extended registration deadline of September 22, 2026 — most likely in early-to-mid October 2026.
Q2. What can I edit in the CAT 2026 correction window?
You can update your photograph, signature, and test city preference. All other fields, including name, date of birth, category, email, and mobile number, remain locked.
Q3. Is there a fee for CAT 2026 form correction?
No. The correction facility is free for all categories — General, EWS, NC-OBC, SC, ST, and PwD.
Q4. Can I change my test city during the CAT 2026 correction window?
Yes, you can typically update your test city preference order, subject to seat availability at your chosen centers.
Q5. Can I edit my CAT 2026 application form after final submission but before the correction window opens?
No. Once you submit and pay, the form is locked until the official correction window activates. There’s no interim editing option.
Q6. What happens if I have a wrong date of birth or name on my CAT 2026 form?
These fields cannot be changed through the correction portal. You’ll need to raise a query with the CAT helpdesk along with supporting documents; resolution isn’t guaranteed, so it’s best to verify these details carefully before the original submission.
Q7. How many days does the CAT correction window usually stay open?
Historically, IIM Indore has kept the window open for 3 to 4 days. The exact CAT 2026 duration will be confirmed in the official notification.
Q8. What if I miss the CAT 2026 correction window deadline?
Your application remains exactly as originally submitted. There is no further opportunity to make changes before the admit card is issued.
Q9. Where do I go to correct my CAT 2026 application form?
Only on the official CAT website, iimcat.ac.in, through the “Registered Candidate Login” option. No other website offers a legitimate correction facility.
Q10. Can unregistered candidates use the correction window to apply fresh?
No. The correction window is only for candidates who have already submitted their CAT 2026 application and paid the registration fee.
Conclusion
The CAT 2026 form correction window is short, but it’s your only safety net before your application becomes final. With registration extended to September 22, 2026, the correction window is likely to land in early-to-mid October — so use the coming weeks to get your compliant photograph and signature files ready, double-check your test city choices, and keep an eye on iimcat.ac.in for the official announcement. Once you lock in your form, shift your full focus back to preparation. Explore CATMOCK’s free mock tests and the complete CATMOCK blog for the latest CAT 2026 updates
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