CDS 1 Last Date to Apply 2027: Deadline, Fees and Final Submission Checklist

Every CDS cycle, a number of eligible graduates lose a full attempt for one simple reason: they leave the form for the last evening. UPSC’s online window for the Combined Defence Services Examination is short, the portal closes at a fixed time, and the rules do not allow a correction or withdrawal once the window is over. This article focuses only on the deadline side of CDS 1 2027: the last date to apply, the closing time, the fee payment cut-off, what happens after the window closes, and a final submission checklist you can run through before you press the submit button.

Status as on 13 November 2026: The CDS (I) 2027 notification has not been released yet. The UPSC Programme of Examinations for 2027 schedules the notification for 2 December 2026, the last date for receipt of applications as 22 December 2026 and the written exam for 11 April 2027. The closing time, fee and other rules given below are taken from the official CDS (I) 2026 notice and are marked as expected for 2027. UPSC states that the dates in its programme are liable to alteration if circumstances so warrant, so the CDS (I) 2027 notice will be the final word. This page will be updated once it is out.

CDS 1 Last Date to Apply 2027: Quick Overview

CDS 1 2027 Last Date and Closing Time

For CDS (I) 2026, the official notice stated that online applications could be filled up to 6:00 PM of 30 December 2025. The window had opened with the notification on 10 December 2025. The CDS (II) 2026 window, which opened on 20 May 2026, closed on 11 June 2026 after a short extension from the original date of 9 June 2026.

For CDS 1 2027, the last date in the UPSC calendar is 22 December 2026. If UPSC keeps the same closing time, the portal will stop accepting CDS (I) 2027 applications at 6:00 PM on 22 December 2026, not at midnight. Treat the afternoon of the last day as the real deadline, and treat the evening as already gone.

The CDS (II) 2026 extension was an exception, not a rule. UPSC does not announce extensions in advance, and you should never plan around one.

Fee Payment Deadline: Pay Within the Window

The application fee is part of the examination module, so it must be paid before the same closing time. As per the CDS (I) 2026 notice, the fee was Rs 200, paid only through Visa, MasterCard or RuPay credit or debit cards, UPI, or internet banking of any bank. All female candidates and SC and ST candidates were exempt, and the notice stated clearly that no exemption is available to OBC candidates. The same structure is expected for CDS 1 2027.

Three official rules matter most for the last days of the window:

• No fee, no application: Applications submitted without the prescribed fee or through any other mode, unless a fee exemption is claimed, are summarily rejected.
• Fictitious payment cases: If UPSC does not receive your payment details from the bank, your application is first treated as a fictitious payment case and rejected. UPSC publishes a list of such candidates on its website within two weeks after the last day of submission, and you then have 10 days from that communication to send proof of payment by hand or speed post. Genuine cases are revived if the candidate is otherwise eligible.
• No refund: Fee once paid is not refunded and cannot be held in reserve for any other examination.

In practice, this means you should keep the bank SMS, UPI reference or transaction ID for every CDS payment, and check UPSC’s website for the fictitious payment list in the first two weeks after 22 December 2026 if your payment status looked doubtful.

The No-Correction Rule: Why the Last Date Is Final

Earlier CDS cycles allowed a short correction window after the last date. That facility has been withdrawn. The CDS (I) 2026 notice says that, in view of multiple reconfirmations built into the application process, the Commission decided not to extend the facility of making any correction in any field of the application form after its submission and the closure of the application window. It adds that no correction, alteration or modification in any field of the Universal Registration Number (URN) profile, the Common Application Form (CAF) or the examination specific module is allowed after submission and closing, and that no queries or representations on such corrections will be entertained.

Two more rules complete the picture:

• No withdrawal: A candidate is not allowed to withdraw the application after submitting it.
• No change in preferences: No request for addition or alteration in the academy preferences already indicated is entertained.

UPSC does give a one-time facility to modify the URN profile, but the notice is explicit that changes apply only to applications submitted after the profile is updated and re-locked. It cannot fix a CDS form you have already submitted. If this rule continues in 2027, as expected, the last date to apply is effectively also the last date to get every detail right.

CDS 1 2027: Last-Day Timeline to Follow

The following plan assumes the scheduled window of 2 to 22 December 2026 and the expected 6:00 PM closing time. Adjust it once the official notice is out.

Apart from traffic, there is a second reason to apply early: examination centres. In the CDS (I) 2026 notice, every centre except Chennai, Dispur, Kolkata and Nagpur had a ceiling on the number of candidates, and centres were allotted on a first-apply, first-allot basis. Once a centre reached capacity, it was frozen, and late applicants had to choose another centre. Candidates who wait for the last day are the ones most likely to lose their preferred city.

Final Submission Checklist Before the Deadline

The step-by-step form-filling process is covered in our guide on how to CDS 1 apply online 2027. The checklist below is for the final review, the few minutes before you submit.

Personal and Identity Details

1. Name and date of birth exactly as in your Class 10 (Matriculation or Secondary School) certificate.
2. Photo ID details (Aadhaar is strongly advised by UPSC) entered correctly; carry the same ID to the exam and the SSB.
3. Email ID and mobile number that you will keep active for the full selection process.

Eligibility Checks

1. Your date of birth falls within the window for every academy you are choosing. The expected 2027 windows are explained in our article on the CDS 1 age limit 2027.
2. Your degree matches the academy: final-year students can apply, but must submit proof of passing by the dates fixed in the notice and carry a bonafide certificate from their college to the SSB.
3. If you are claiming NCC ‘C’ certificate reserved vacancies, you meet the service and discharge conditions on the last date of receipt of applications.

Preferences, Centre and Fee

1. Academy preferences are in the order you really want; OTA, if chosen with permanent commission courses, is placed last, and AFA, if wanted, is the first choice.
2. Exam centre selected and shown as allotted on the form.
3. Fee paid and payment status shown as successful, or fee exemption correctly claimed (Female, SC or ST only).

After You Press Submit

1. Download and save the submitted application as PDF and take a printout.
2. Note your Application Number and URN in a safe place.
3. Save the bank or UPI transaction reference for the fee.

Candidates already in Government service, as per the 2026 notice, must inform their Head of Office or Department in writing that they have applied, and serving Armed Forces personnel must inform their Commanding Officer and submit a No Objection Certificate at the SSB. Do this soon after you submit, as an application can be rejected if the employer withholds permission.

Common Last-Date Mistakes to Avoid

1. Treating the last date as a full day. The portal is expected to close at 6:00 PM, not midnight.
2. Paying at the last hour. A failed or pending payment close to the deadline may not get a second chance before the window closes.
3. Submitting in a hurry and hoping to fix it later. There is no correction window and no withdrawal.
4. Waiting for an extension. UPSC extended CDS (II) 2026 by two days, but CDS (I) 2026 closed on its original date. Extensions are never promised.
5. Ignoring the centre ceiling. Popular centres can fill up and freeze well before the last date.
6. Trusting unofficial links. Apply only on upsconline.nic.in; ignore any site or agent that asks you to pay a fee to a private account.

If you face a technical issue during the window, UPSC ran a helpline (011-24041001, email [email protected]) from 10:00 AM to 5:30 PM on all working days of the CDS (I) 2026 application window, covering issues such as fee payment and uploading documents. A similar facility is expected for 2027. Note that the helpline closes before the expected 6:00 PM deadline, another reason not to leave problems for the last evening.

What Happens After the Last Date

Once the window closes on 22 December 2026, the next official step is the e-admit card. As per the 2026 notice, it is issued on the last working day of the week preceding the examination, only on the UPSC website, and is not sent by post or email. You will need your Application ID and date of birth to download it. If you have not received your e-admit card or any communication seven days before the exam, you must contact the Commission at once. For the full sequence of admit card, result and SSB months, see our article on the CDS 1 exam date 2027.

Frequently Asked Questions

1. What is the last date to apply for CDS 1 2027?

As per the UPSC Programme of Examinations for 2027, the last date for receipt of applications for CDS (I) 2027 is 22 December 2026. The notification is scheduled for 2 December 2026. The dates will be confirmed in the official notice.

2. At what time does the CDS 1 2027 application window close?

The exact time will be given in the CDS (I) 2027 notice. In the CDS (I) 2026 notice, applications could be filled up to 6:00 PM on the last date, so a 6:00 PM closing on 22 December 2026 is expected.

3. Will UPSC extend the CDS 1 2027 last date?

There is no official information on any extension. UPSC extended the CDS (II) 2026 window from 9 June to 11 June 2026, but CDS (I) 2026 closed on its scheduled date. Do not plan your application around a possible extension.

4. Can I pay the CDS 1 2027 fee after the last date?

Based on the 2026 notice, no. The fee is paid online in the examination module, and applications without the prescribed fee, unless an exemption is claimed, are summarily rejected. Pay before the window closes.

5. Is there a correction window after the CDS 1 2027 last date?

Based on the CDS (I) 2026 and CDS (II) 2026 notices, no. UPSC decided not to allow corrections in any field after submission and closure of the window. This is expected to continue, but the 2027 notice will confirm it.

6. My fee was deducted but the application shows unpaid. What should I do?

Under the 2026 rules, such applications are first treated as fictitious payment cases. UPSC publishes a list within two weeks after the last date, and you get 10 days from that communication to submit proof of payment. Keep your transaction reference safe.

Conclusion

The CDS 1 last date to apply for 2027 is scheduled as 22 December 2026, with the window opening on 2 December 2026. If the 2026 rules continue, the portal will close at 6:00 PM, the Rs 200 fee must be paid before that, and nothing can be corrected or withdrawn afterwards. That makes the deadline far less forgiving than it looks.

Finish your URN and Common Application Form before the notice, apply in the first week of the window, run through the final checklist before submitting, and save your application PDF and payment reference. This page will be updated with the official CDS (I) 2027 dates and timings as soon as UPSC releases the notice.