When applying for a PAN Card in India, selecting the correct AO Code is an important step. The easiest and most reliable way to find your AO Code is through the Protean (formerly NSDL) official website.
In this latest 2026 guide, you will learn how to check AO Code on the Protean NSDL website step by step.
What Is AO Code in PAN Application?
AO Code (Assessing Officer Code) is a jurisdiction code assigned by the Income Tax Department to identify the Assessing Officer responsible for your tax records.
It helps determine:
- Your Income Tax jurisdiction
- Assigned tax officer
- Regional tax office
This code is mandatory while applying for a new PAN card or PAN correction.
Why Use Protean (NSDL) Website to Find AO Code?
Protean is an authorized PAN service provider approved by the Income Tax Department of India.
Checking AO Code from this website ensures:
✅ Accurate jurisdiction selection
✅ Updated AO Code list
✅ Error-free PAN application
✅ Faster processing
Step-by-Step Process to Check AO Code on Protean Website
Follow these simple steps:
Step 1: Visit the Official Protean PAN Website
Open your browser and go to the official PAN application portal managed by Protean.
Step 2: Click on “Know Your AO Code”
On the PAN services page, locate and click the “Know Your AO Code” option.
This section helps applicants search jurisdiction details easily.
Step 3: Select Your State
Choose the state where:
- You currently live, OR
- Your business office is located
Example: Chhattisgarh, Maharashtra, Delhi, etc.
Step 4: Select Your City or District
After selecting the state, a list of cities/districts will appear.
Select your correct city.
Step 5: Choose Applicant Category
Now select your category:
- Individual
- Company
- Partnership Firm
- Trust
- Government
- Non-Resident (NRI)
Most applicants select Individual – Non Business.
Step 6: View AO Code List
A complete list of AO Codes will appear showing:
- Area Code
- AO Type (Ward/Circle)
- Range Code
- AO Number
- Jurisdiction description
Step 7: Select the Correct AO Code
Carefully read the jurisdiction description and choose the AO Code matching your locality or address.
Use this code while filling your PAN application form.
Example of AO Code Format
Example: RPR W 45 2
Meaning:
- RPR → Area Code (Raipur)
- W → Ward
- 45 → Range Code
- 2 → AO Number
Important Tips While Selecting AO Code
✔ Always select based on your current address
✔ Individuals should usually choose Ward jurisdiction
✔ Businesses should select Circle jurisdiction
✔ Double-check city and category before submission
Common Mistakes to Avoid
❌ Selecting wrong district
❌ Choosing Business instead of Non-Business
❌ Randomly selecting first AO Code
❌ Using outdated jurisdiction details
These mistakes may delay PAN approval.
What If You Select the Wrong AO Code?
If you enter an incorrect AO Code:
- Income Tax Department may automatically transfer jurisdiction
- You can submit PAN correction later
- Your PAN will still remain valid
However, correct selection saves processing time.
Final Conclusion
Checking AO Code on the Protean (NSDL) website is the safest and latest method for PAN applicants in 2026. By selecting the correct state, city, and category, you can easily find your jurisdictional AO Code and complete your PAN application without errors.
Always verify details carefully before submitting your form.