How to Apply for CDS 1 2026 - Complete Online Form Guide

Dreaming of joining the Indian Armed Forces via the CDS 1 2026 exam? Before anything else, the first step is filling out the online application correctly. Many candidates trip up on small things wrong documents, incorrect DOB, or payment mistakes, which can lead to their form being rejected. This guide will take you through each step of the application process, covering dates, eligibility, documents, fees, and submission, so you can complete it without any stress.

CDS 1 2026 Important Dates

Before you start filling out the form, make sure you know the key deadlines. UPSC is strict; late forms are never accepted.

CDS 1 2026 Schedule

Notification Release Date: December 10, 2025
Application Start Date: December 10, 2025
Application Last Date: December 30, 2025
Exam Date: April 12, 2026

Tip: Always fill out the form early to avoid last-minute website issues and to secure your preferred exam centre.

CDS 1 2026 Eligibility Criteria

Before applying, ensure you meet all the requirements:

Age Limit

Indian Military Academy (IMA): 19–24 years
Officers’ Training Academy (OTA) – Men & Women: 19–25 years
Air Force Academy (AFA): 19–23 years
Navy (Indian Naval Academy): 19–22 years

Educational Qualifications

IMA & OTA: Graduate in any discipline from a recognised university
AFA & INA (Navy): Engineering degree or final year appearing candidates

Marital Status

Only unmarried candidates can apply

Nationality

Indian citizens, or subjects of Nepal/Bhutan, or Tibetan refugees (before Jan 1, 1962)

Documents You Must Keep Ready

Before you start the online form, gather these documents to avoid errors:

Scanned Passport Size Photograph (JPG, white background, 20–300 KB)
Scanned Signature (JPG, blue/black ink, 20–100 KB)
Photo ID Proof (PDF: Aadhaar, PAN, Passport, Voter ID, Driving License)
Educational Certificates (Graduation or final year marksheet)
Caste Certificate (if applying under reservation)

Step-by-Step Guide to Fill CDS 1 2026 Online Form

UPSC CDS application is done through the One-Time Registration (OTR) system, followed by Part I & II applications. Here’s how:

Step 1: Visit the Official UPSC Portal

Go to upsconline.nic.in Or upsc.gov.in

Click on Examination
Select Active Examinations
Choose CDS 1 2026

Step 2: Complete One-Time Registration (OTR)

Enter personal details: name, DOB, gender, father’s & mother’s name, email, mobile
Generate Universal Registration Number (URN) for all future UPSC exams
Create login credentials

This step is mandatory even if you have registered earlier.

Step 3: Part I – Fill Personal & Educational Details

Log in using URN
Select CDS 1 2026 Examination

Enter:

Personal details
Academic qualifications
Exam centre preferences
Service preference: IMA, OTA, AFA, INA

Save and proceed to Part II

Step 4: Part II – Upload Documents & Pay Fee

Upload a scanned photograph and signature
Upload photo ID proof (PDF)
Choose Exan Centre from the available options

Application Fee

General/OBC/EWS: ₹200
SC/ST/Female: Fee exempted

Payment Methods:

Debit/Credit card
Net Banking
UPI
SBI Bank Challan

Step 5: Final Submission

Check all details using Print Preview
Accept the declaration
Click Submit
Download and print the confirmation page for records

Medical & Physical Standards for CDS 1 2026

Clearing the written exam is just the first step. Candidates must also meet strict medical standards:

Vision Standards

Normal vision: 6/6 ideal
Corrected vision: Minimum 6/9 (better eye), 6/12 (other eye)
No colour blindness or night blindness

Physical Standards

Height and chest requirements differ per academy
No serious skeletal deformities, varicose veins, flat feet, or hernia
Must be free from major medical conditions like TB

Refer to the official UPSC CDS medical standards PDF before applying.

Common Mistakes to Avoid

Using old or unclear photos
Entering DOB, name, or category incorrectly
Uploading mismatched ID proof
Filling form on the last day
Ignoring OTR login credentials

Avoiding these mistakes will ensure a smooth application process.

Prepare for CDS 1 2026 with Centurion Defence Academy

Filling the CDS 1 2026 online form is easy if you follow the correct steps and keep your documents ready. Once submitted, your focus should be on written exam preparation and SSB training.

Centurion Defence Academy provides complete guidance for CDS aspirants:

21-day Intensive SSB Program with expert mentors
Structured CDS written batches and high-quality study material
Personalised feedback and doubt-solving sessions
Mentorship from India’s top SSB panel
Centurion Digital App for online preparation anytime

With the right coaching, focused practice, and discipline, your dream of joining the Indian Armed Forces becomes achievable.