India's Most Trusted AO Code Search Platform
Helping millions find their correct AO Code for PAN Card applications, TAN registration, and Income Tax filing completely free, instantly.
What is AO Code?
AO Code (Assessing Officer Code) is a unique identifier assigned by the Income Tax Department of India to every tax jurisdiction.
AO Code determines which Income Tax office processes your documents. It's mandatory when applying for a PAN Card through NSDL or UTI portals, TAN registration, or ITR filing.
Each AO Code consists of four components that together identify your exact tax jurisdiction:
Area Code
3-letter city identifier (DEL, MUM, BLR)
AO Type
W (Ward) or C (Circle)
Range Code
1-3 digit jurisdiction number
AO Number
1-2 digit officer identifier
Find AO Code by PIN Code
Don't know your city name? Search by your 6-digit postal PIN code instead.
Our platform supports AO Code search by PIN Code, making it easier for users in smaller towns and rural areas. Simply enter your 6-digit postal PIN code and we'll show you the correct AO Code for your jurisdiction.
Instant Results
Enter your PIN code, get AO details in under a second
Multi-City Mapping
One PIN code can map to multiple AO jurisdictions
Official Data
All 585+ PIN codes sourced from Income Tax records
How to Find AO Code
Search by City Name
Type your city name (e.g., Mumbai, Delhi) to instantly see all AO Codes assigned to that city.
Search by PIN Code
Enter your 6-digit postal PIN code to find the AO jurisdiction covering your area.
Browse Alphabetically
Use the A-Z city directory on our homepage to browse all available cities.
Use the Details
Copy the Area Code, AO Type, Range Code, and AO Number directly into your PAN/TAN form.
AO Code for PAN & TAN
PAN Card Application
AO Code for PAN Card is mandatory when applying through NSDL or UTI. Fill the Area Code, AO Type, Range Code, and AO Number fields correctly.
TAN Registration
TAN AO Code is required for businesses registering for Tax Deduction Account Number. The jurisdiction may differ from PAN.
ITR Filing
Knowing your AO Code helps ensure your Income Tax Return reaches the correct Assessing Officer for processing.
PAN Correction
When correcting or updating your PAN Card details, you may need to verify or update your AO Code based on your current address.
AO Codes for Major Cities
We cover 568+ cities and 585+ PIN codes across India with 1,899+ AO Code entries.
Frequently Asked
Questions
What is AO Code in PAN application?
expand_moreAO Code is a mandatory field in PAN Card applications that identifies your tax jurisdiction. It consists of Area Code (3-letter city code), AO Type (W or C), Range Code, and AO Number. You can find yours instantly on our homepage.
How to find AO Code by PIN Code?
expand_moreSimply enter your 6-digit postal PIN code in our search bar. Our database maps 585+ PIN codes to their respective AO jurisdictions. The results show complete AO Code details including Area Code, AO Type, Range Code, and AO Number.
What is the difference between AO Code for PAN and TAN?
expand_moreWhile both PAN and TAN applications require an AO Code, the jurisdiction may differ. PAN is linked to your residential address, while TAN is based on your business location. Our search covers both — just enter your city or PIN code to find the applicable codes.
Is this an official government website?
expand_moreNo. AO Finder is an independent, free-to-use platform that aggregates publicly available AO Code data for easy lookup. For official records, please visit the Income Tax India website.