
The National Testing Agency (NTA) has kept the application correction window for the Graduate Aptitude Test in Biotechnology (GAT-B) 2026 and the Biotechnology Eligibility Test (BET) 2026 open only until tonight — April 13, 2026, at 11:50 PM. Candidates who registered for either exam and need to fix errors in their application form must act right now. There will be no extension, no second window, and no exceptions after the deadline passes.
NTA has explicitly warned: this correction facility is a one-time, exceptional measure. Once 11:50 PM tonight passes, your application form is locked permanently.
The GAT-B (Graduate Aptitude Test — Biotechnology) is conducted by NTA on behalf of the Department of Biotechnology (DBT), Ministry of Science and Technology, Government of India. It is the national-level gateway for admission to M.Tech/M.E. biotechnology programmes at premier institutes across the country. The BET (Biotechnology Eligibility Test) qualifies candidates for DBT-funded Junior Research Fellowships (JRF) and Research Associateships in biotechnology.
Both exams are scheduled on May 17, 2026 (Sunday) and will be conducted in Computer-Based Test (CBT) mode, in English only.
Errors in competitive exam application forms — a wrong date of birth, misspelled name, incorrect category — can lead to disqualification, admit card mismatches, or rejection of results. NTA has opened this window specifically so candidates can fix genuine mistakes. Missing this deadline means living with those errors for the entire exam cycle.
Frequently Asked Question (In-Article): Can I change my exam city to a different state? No. The exam city correction is restricted to cities within the same State or Union Territory (UT) where you originally applied. Inter-state city changes are not permitted.
| Event | Date / Time |
|---|---|
| Application form open | March 19, 2026 |
| Application close | April 9, 2026 (5:00 PM) |
| Fee payment deadline | April 9, 2026 (11:50 PM) |
| Correction window opens | April 11, 2026 |
| Correction window closes | April 13, 2026 (11:50 PM) — TODAY |
| Exam date | May 17, 2026 (Sunday) |
| GAT-B exam time | 9:00 AM – 12:00 Noon |
| BET exam time | 3:00 PM – 6:00 PM |
| Exam duration | 180 minutes (3 hours) |
| Exam mode | Computer-Based Test (CBT) |
| Language | English only |
Not every field is open for editing. NTA has clearly specified which sections candidates can and cannot modify.
Personal Details — Only ONE field editable (choose carefully): You can change only one of the following: Candidate Name, Father's Name, Mother's Name, Photograph, or Signature. This is a strict single-edit limit within this category.
Academic Details — All fields editable: Class 10 / Equivalent details, Graduation details, and Post-graduation details can all be corrected.
Other Details — All fields editable: Date of Birth, Gender, Category, PwBD status, and sub-category can all be updated. Note: Changes to Category or PwBD status may attract an additional fee. No refund will be issued for excess payment.
Exam City: Change is permitted, but only within the same State or Union Territory. You cannot move to a different state.
Even within the correction window, the following details are frozen and cannot be modified under any circumstances:
Frequently Asked Question (In-Article): I entered the wrong mobile number during registration. Can I fix it in the correction window? No. Mobile number and email address are non-editable fields. NTA does not allow changes to contact credentials through the correction window. If you face difficulties, contact NTA directly.
Follow these steps precisely before 11:50 PM tonight:
Step 1: Go to the official NTA GAT-B/BET exam portal: exams.nta.nic.in/gat-bet/
Step 2: Log in using your Application Number and Password/Date of Birth.
Step 3: Click on the Correction Window / Edit Application link on the dashboard.
Step 4: Make the required edits carefully. Remember — personal details allow only one change. Review everything before saving.
Step 5: If your correction involves a category change or PwBD status update, pay the additional fee through the payment gateway.
Step 6: After submitting, download and save the updated confirmation page for your records.
Do not close the browser or refresh mid-payment. Always download the final confirmation page as proof of correction.
You get only one shot at this. NTA has been unambiguous: there is no second correction window, no extension, and no individual exceptions after the deadline. Double-check every field before you submit. If you correct your name but later realize you also need to fix your father's name, you will not be able to make that change — the personal details category allows only a single edit total.
Also verify your photograph and signature meet NTA's specifications (format, file size, background). An incorrect photo can cause issues at the admit card and exam centre stages.
Frequently Asked Question (In-Article): Will I get a refund if I paid extra after a category change? No. NTA's official notification clearly states that no refund will be processed for excess fee payment resulting from corrections.
If you encounter technical difficulties or need clarification while making corrections, reach NTA through these official channels:
Contact NTA well before 11:50 PM tonight — do not wait until the last hour hoping to get resolution. Helpline lines can be congested close to deadlines.
Q1. What is the last date for NTA GAT-B BET 2026 correction window? The last date to make corrections in the GAT-B and BET 2026 application form is April 13, 2026 (today), and the window closes at 11:50 PM sharp.
Q2. How many times can I edit my GAT-B 2026 application form? Only once. The correction facility is a one-time service. Once you submit your corrected form, no further changes are permitted.
Q3. Can I change my exam city in the GAT-B 2026 correction window? Yes, but only to another city within the same state or Union Territory. Cross-state exam city changes are not allowed.
Q4. What documents do I need to make corrections in the NTA GAT-B form? You need your application number, login credentials, and supporting documents for the fields you are correcting (e.g., marksheet for academic corrections, ID proof for date of birth, passport-size photo for photograph update).
Q5. Is there an extra fee for making corrections in BET 2026 application? Corrections to Category or PwBD status may attract an additional fee. For other fields, no fee may be required. However, any excess payment will not be refunded.
Q6. When is the NTA GAT-B BET 2026 exam date? Both GAT-B and BET 2026 will be held on May 17, 2026 (Sunday). GAT-B runs from 9:00 AM to 12:00 Noon; BET runs from 3:00 PM to 6:00 PM.
Q7. What is the official website to make corrections in NTA GAT-B BET 2026? The official portal is exams.nta.nic.in/gat-bet/. Candidates can also check nta.ac.in for updates.
Q8. Can I change my mobile number or email in the GAT-B correction window? No. Mobile number, email address, and address fields are permanently locked and cannot be changed through the correction window.
Q9. What happens if I miss the GAT-B BET 2026 correction window deadline? NTA has confirmed there will be no further correction opportunity. Your original application details — including any errors — will be considered final for all subsequent stages including admit card issuance and result processing.
Q10. Who conducts GAT-B and BET exams? The National Testing Agency (NTA) conducts both GAT-B and BET on behalf of the Department of Biotechnology (DBT), Government of India.