DU CSAS Phase 1 2026 registration is open on ugadmission.uod.ac.in until June 30, 2026 — CUET UG 2026 students must complete this step before the window closes to be eligible for seat allotment.
Delhi University’s Common Seat Allocation System (CSAS) is the only online gateway to undergraduate admission at DU. Phase 1 of DU CSAS 2026 covers registration, document upload, and registration fee payment. You can complete Phase 1 even before CUET UG 2026 results are declared — the portal fetches your scores automatically via DigiLocker once results are out. Students who miss Phase 1 cannot participate in seat allocation under any circumstances.
- DU CSAS Phase 1 2026 registration last date: June 30, 2026.
- Official portal: ugadmission.uod.ac.in — log in with your CUET UG 2026 application number and date of birth.
- CUET UG scores are auto-fetched via DigiLocker — no manual entry of scores is required.
- Registration fee: Rs. 250 for General/OBC-NCL/EWS and Rs. 100 for SC/ST/PwBD.
- Students awaiting Class 12 results can register provisionally and update marks later.
| Direct Link — DU CSAS Phase 1 2026 Registration Portal (OPEN) — ugadmission.uod.ac.in |
DU CSAS Phase 1 2026 Important Dates
DU CSAS Phase 1 2026 registration opened on June 17, 2026, and closes on June 30, 2026. Mark these dates carefully — there is no grace period after Phase 1 closes.
| Event | Date (2026) |
|---|---|
| DU CSAS Phase 1 Registration Opens | June 17, 2026 |
| DU CSAS Phase 1 Registration Last Date | June 30, 2026 |
| CUET UG 2026 Results (expected) | First week of July 2026 |
| DU CSAS Phase 2 — Programme Preference Filling | After CUET UG results (to be announced) |
| DU CSAS First Allocation List | To be announced |
Eligibility for DU CSAS Phase 1 2026
You must meet these conditions to register for DU CSAS Phase 1 2026.
- You must have appeared in CUET UG 2026 conducted by NTA.
- You must have passed Class 12 or equivalent from a recognised board with a minimum of 45% aggregate marks (40% for SC/ST/PwBD students).
- Students who are awaiting Class 12 results can register provisionally and submit final marks after the result is declared.
- You must have appeared in the CUET UG 2026 subjects relevant to the programme you intend to apply for in Phase 2.
- Reserved category students (SC/ST/OBC-NCL/EWS/PwBD) must hold valid supporting certificates issued by the competent authority.
- There is no upper age limit for most DU undergraduate programmes.
Documents Required for DU CSAS Phase 1 2026
Scan and keep these documents ready before you start the registration process. Uploading unclear or wrong documents is the most common reason applications are flagged during verification.
| Document | Format and Size Limit |
|---|---|
| CUET UG 2026 Application Number (for login) | Reference only — scores fetched via DigiLocker |
| Class 10 Marksheet and Passing Certificate | JPG or PDF, max 500 KB |
| Class 12 Marksheet or Provisional Marksheet (if awaited) | JPG or PDF, max 500 KB |
| Recent Passport Size Photograph | JPG, max 50 KB, white background |
| Scanned Signature | JPG, max 20 KB, white background |
| Category Certificate — SC/ST/OBC-NCL/EWS (if applicable) | JPG or PDF, max 500 KB |
| PwBD Certificate (if applicable) | JPG or PDF, max 500 KB |
| Transfer or Migration Certificate (for students from boards outside Delhi) | JPG or PDF, max 500 KB |
How to Register for DU CSAS Phase 1 2026 — Step-by-Step Process
Follow these steps carefully on ugadmission.uod.ac.in to complete DU CSAS Phase 1 registration before the June 30, 2026 deadline.
- Visit the official DU CSAS 2026 portal at ugadmission.uod.ac.in and click on the CSAS UG 2026 link on the homepage.
- Click "New Registration" on the login page. Use this option only if you are registering for the first time.
- Enter your CUET UG 2026 Application Number and Date of Birth. The system will verify your identity with NTA and auto-fetch your name, category, and CUET subject scores via DigiLocker.
- Verify all auto-fetched details carefully — name, date of birth, category, and CUET UG scores. If any detail is incorrect, contact the DU admission helpdesk before proceeding further.
- Create your DU CSAS login credentials. Set a secure password and make a note of your User ID (your CUET UG application number) for future logins.
- Fill in personal and contact details — home address, parent or guardian names, and an active email and mobile number. You will receive all future communications here.
- Enter your Class 12 academic details — board name, year of passing, roll number, and subject-wise marks. If your results are awaited, select the "Result Awaited" option and update marks once the result is out.
- Upload all required documents in the specified format and within the size limits. Ensure photographs are in colour with a plain white background.
- Pay the registration fee — Rs. 250 for General/OBC-NCL/EWS or Rs. 100 for SC/ST/PwBD — via UPI, net banking, debit card, or credit card. The fee is non-refundable.
- Submit and download your confirmation receipt. Save the transaction ID and the confirmation page as proof of successful Phase 1 registration.
Once Phase 1 is complete, your profile is locked for seat allocation. You will be notified when Phase 2 opens for programme and college preference filling after CUET UG 2026 results are out.
DU CSAS Phase 1 2026 Registration Fee
The DU CSAS Phase 1 registration fee is a one-time non-refundable payment. Verify all your details before making the payment since changes after submission may not be possible.
| Category | Registration Fee |
|---|---|
| General | Rs. 250 |
| OBC-NCL and EWS | Rs. 250 |
| SC and ST | Rs. 100 |
| PwBD | Rs. 100 |
Payment modes accepted on the portal include UPI, net banking, debit card, and credit card. Save your bank transaction reference number and the payment receipt immediately after completing payment.
Common DU CSAS Phase 1 Registration Issues and How to Fix Them
Technical issues are common on the last day due to heavy portal traffic. Register early and refer to these fixes if you face problems.
| Issue | Fix |
|---|---|
| CUET UG Application Number not recognised | Cross-check the number on your CUET UG 2026 admit card. Remove any extra spaces before entering. |
| Name or category mismatch after DigiLocker auto-fetch | Do not proceed. Contact the DU admission helpdesk immediately with your CUET UG application number and supporting documents. |
| OTP not received on registered mobile number | Check if your number is correctly registered. Wait 2 minutes before requesting a new OTP. Also check if your mobile network blocks short code messages. |
| Document upload failing or file size too large | Compress images using a free online tool. Convert marksheets to PDF to reduce file size. Ensure photographs are in JPG format. |
| Payment deducted but registration not confirmed | Wait up to 24 hours for the status to update. If still unconfirmed, contact the DU helpdesk with your transaction ID and bank statement screenshot. |
| Portal loading slowly or timing out | Register during off-peak hours such as early morning. Use a stable broadband connection instead of mobile data. |
DU CSAS Phase 1 2026 Registration FAQs
Ques. What is DU CSAS Phase 1 2026?
Ans. DU CSAS Phase 1 is the first step of Delhi University’s Common Seat Allocation System for 2026 undergraduate admissions. It involves creating an online registration profile on ugadmission.uod.ac.in, uploading required documents, and paying the non-refundable registration fee. Completing Phase 1 is mandatory before you can fill programme and college preferences in Phase 2.
Ques. Can I register for DU CSAS Phase 1 2026 before CUET UG results are out?
Ans. Yes. DU CSAS Phase 1 registration is open before CUET UG 2026 results are declared. You need only your CUET UG application number and date of birth to register. Your CUET scores will be fetched automatically via DigiLocker once results are published by NTA.
Ques. What is the last date to register for DU CSAS Phase 1 2026?
Ans. The last date to register for DU CSAS Phase 1 2026 is June 30, 2026. Students who miss this deadline cannot participate in DU seat allotment through CSAS, even if they have a valid CUET UG 2026 score.
Ques. What is the registration fee for DU CSAS Phase 1 2026?
Ans. The DU CSAS Phase 1 2026 registration fee is Rs. 250 for General, OBC-NCL, and EWS students and Rs. 100 for SC, ST, and PwBD students. The fee is non-refundable and is paid online through UPI, net banking, debit card, or credit card on the portal.
Ques. Can students with pending Class 12 results register for DU CSAS Phase 1 2026?
Ans. Yes. Students awaiting their Class 12 results can complete DU CSAS Phase 1 registration by selecting the "Result Awaited" option in the academic details section. Final marks must be updated on the portal once the result is declared. DU admission will be confirmed only after the final marksheet is submitted and verified.
Ques. What happens after DU CSAS Phase 1 registration is complete?
Ans. After completing Phase 1, your registration profile is locked and ready for seat allocation. Once CUET UG 2026 results are declared, DU opens Phase 2 for programme and college preference filling. You rank your preferred programmes and colleges in order of priority. DU then releases allocation lists based on CUET UG scores and seat availability, and you accept your allotted seat online.
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