CSAB Special 2026: Registration, Allotment & Refund — Explained

Over 7,000 seats across 31 NITs, 26 IIITs, and 38 GFTIs remain vacant after the final round of JoSAA counseling every year. The CSAB Special 2026 round is the final gateway for JEE Main qualified candidates to secure admission in the NIT+ system. If you missed out during JoSAA, or if you want to upgrade your current allotted branch, this special round operates on a completely different set of rules regarding fees, choice filling, and seat conversion.

Unlike JoSAA, participating in the Central Seat Allocation Board (CSAB) Special Round requires a non-refundable processing fee, and making a mistake in choice filling can result in the forfeiture of up to ₹40,000. Here is the exact data, fee structure, and refund policy you need to navigate the CSAB Special Round 2026 successfully.

Who is Eligible for CSAB Special Round 2026?

Eligibility for CSAB is broader than JoSAA. The board categorizes eligible candidates into specific types based on their previous JoSAA participation. You can register for CSAB 2026 if you fall into any of these categories:

• Type 1: Candidates who qualified JEE Main 2026 but did not register for JoSAA counseling.
• Type 2: Candidates who registered for JoSAA but were not allotted any seat in any of the six rounds.
• Type 3: Candidates who were allotted a seat in JoSAA, but the seat was canceled due to non-payment of the Seat Acceptance Fee (SAF).
• Type 4: Candidates who exercised the 'EXIT' option during JoSAA counseling.
• Type 5: Candidates who were allotted a seat, paid the SAF, but their seat was canceled during document verification due to invalid category certificates or other discrepancies.
• Type 6: Candidates who successfully secured a seat in JoSAA, paid both the SAF and Partial Admission Fee (PAF), and have already joined the institute, but want to try for a better branch or college.

CSAB 2026 Participation Fee Structure

The fee structure for CSAB is complex because it adjusts the money you may have already paid during JoSAA. The total participation fee includes a ₹4,000 non-refundable Special Round Processing Fee (SRPF). The remaining amount is the Institute Admission Fee (IAF), which is adjusted against your first-semester college fees.

Candidates must pay this fee online via Net Banking, Credit Card, Debit Card, or UPI during the registration window. Without successful payment, the choice-filling portal will not unlock.

How Does Seat Conversion Work in CSAB?

A major advantage of the CSAB Special Round is the seat conversion rule. During JoSAA, a Home State (HS) quota seat remains restricted to candidates from that specific state. In CSAB, the rules change to maximize seat occupancy.

If a Home State (HS) quota seat remains vacant after JoSAA, it is converted into an Other State (OS) or All India (AI) quota seat during the CSAB Special Round. This means a candidate from Delhi can secure a vacant Home State seat in NIT Warangal during CSAB, which was previously unavailable to them in JoSAA.

However, category reservations (SC/ST/OBC/EWS) are strictly maintained. An unfilled OBC seat will not be converted to an Open (General) category seat. It will remain an OBC seat, just its state quota restriction will be removed.

CSAB 2026 Registration and Choice Filling Process

The CSAB process requires fresh registration. Your previous JoSAA choices are considered null and void. Follow these exact steps to participate:

1. Registration: Log in to csab.nic.in using your JEE Main 2026 Application Number and Password. Update your state of eligibility if required.
2. Fee Payment: Pay the required participation fee based on your JoSAA status category as detailed in the fee table above.
3. Fresh Choice Filling: Select NITs, IIITs, and GFTIs based on the available seat matrix published by CSAB. You can fill as many choices as you want.
4. Order of Preference: Arrange choices strictly in decreasing order of your preference. Do not fill a choice you are not willing to join, as rejecting an allotted seat carries heavy financial penalties.
5. Choice Locking: Lock your choices before the deadline. If you fail to lock them manually, the system will automatically lock your final saved choices at the deadline.

Check the /jee-main-2026-cutoff to understand the closing ranks for various NITs before filling your choices.

Seat Allotment Options: Freeze, Slide, Float, Surrender

When you are allotted a seat in CSAB Special Round 1, you must choose one of the following options online. Failing to select an option will result in the immediate cancellation of your allotted seat.

• Freeze: You are satisfied with the allotted seat and do not wish to participate in Round 2.
• Slide: You accept the allotted seat but want to be considered for a higher preferred branch within the same institute in Round 2.
• Float: You accept the allotted seat but want to be considered for a higher preferred branch in any institute in Round 2.
• Surrender and Participate in Round 2: You reject the seat allotted in Round 1, but you want to participate in Round 2 for your higher preferences.
• Surrender and Not Participate in Round 2: You reject the seat allotted in Round 1 and want to exit the CSAB counseling process completely.

CSAB 2026 Refund Policy: Will You Get Your Money Back?

The refund policy is the most critical aspect of CSAB. Many students lose up to ₹40,000 because they do not understand the deduction rules. Refunds are processed automatically to the bank account provided during registration, usually taking 2 to 3 months after counseling ends.

Scenario 1: No Seat Allotted

If you register, pay the participation fee (e.g., ₹44,000), but are not allotted any seat in either Round 1 or Round 2, your fee will be refunded after deducting the ₹4,000 Special Round Processing Fee. You will receive ₹40,000 back in your bank account.

Scenario 2: Seat Allotted in Round 1, but Surrendered

If you get a seat in Round 1, but you choose the "Surrender and Not Participate in Round 2" option, CSAB will deduct the ₹4,000 processing fee plus a ₹2,000 seat cancellation fee. Out of your ₹44,000, you will receive a refund of ₹38,000.

Scenario 3: Seat Allotted in Round 2, but Candidate Does Not Join

This is where candidates lose money. If you are allotted a fresh seat in Round 2, or if you retained a seat from Round 1 into Round 2, and you decide not to report to the allotted institute, there will be no refund of the participation fee. The entire amount (₹44,000 or ₹24,000) is transferred to the allotted institute. You will have to contact the specific institute directly for any refund, which is subject to their individual withdrawal policies.

Rule of thumb: Only fill choices in CSAB that you are 100% willing to join. Read our complete guide on the /josaa-counseling-process to understand how to build a safe preference list.

Required Documents for Online Verification

If allotted a seat, you must upload specific documents for online verification. Ensure these are ready in PDF format before August 2026:

• Class 10 Certificate (Proof of Date of Birth)
• Class 12 Mark Sheet and Certificate
• Category Certificate (SC/ST/OBC-NCL/EWS). Note: OBC-NCL and EWS certificates must be issued on or after April 1, 2026.
• Original Certificate for Persons with Disabilities (PwD), if applicable
• Crossed Bank Cheque / Passbook copy (for refund purposes)
• Medical Certificate (as per JoSAA/CSAB format)
• Passport size photograph

Frequently Asked Questions (FAQs)

Does CSAB include IITs?

No, IITs do not participate in the CSAB Special Round. CSAB is exclusively for the NIT+ system, which includes NITs, IIITs, IIEST Shibpur, and GFTIs. IIT admissions conclude completely with the final round of JoSAA.

Do I need to register separately for CSAB if I already registered for JoSAA?

Yes, fresh registration is mandatory for everyone. Even if you participated in JoSAA and paid the Seat Acceptance Fee, you must log in to the CSAB portal, register again, and pay the ₹4,000 Special Round Processing Fee.

What happens to my JoSAA seat if I participate in CSAB?

If you secured a seat in JoSAA, paid the SAF and PAF, and chose to participate in CSAB, your JoSAA seat remains safe. However, if you are allotted a new seat in the CSAB Special Round based on your fresh choices, your previously secured JoSAA seat will automatically be canceled and given to another candidate.

Can I participate in CSAB if my JEE Main rank is very low?

Yes, any candidate with a valid JEE Main 2026 Common Rank List (CRL) score

Related Resources

• JoSAA 2026 Counselling Guide
• JEE Main 2026 Exam
• Top NITs in India: Rankings & Cutoffs

Put this advice into practice

The CSAB Special Round 2026 is a critical final opportunity for JEE Main candidates to secure a seat in the NIT+ system. Understanding the unique rules, fee structure, and strict refund policy is essential to avoid costly mistakes. Carefully review all guidelines on the official csab.nic.in website before proceeding with your registration and choice filling.