You can find your AO Code on the official Income Tax e-Filing portal, as well as the NSDL or UTIITSL PAN service websites. The AO Code is a mandatory, four-part identifier (Area Code, AO Type, Range Code, AO Number) that determines your tax jurisdiction.
- On the e-Filing portal, use the 'Know Your AO' service by entering your PAN and mobile number to receive an OTP for validation.
- Alternatively, visit the NSDL (Protean) or UTIITSL website, search for your city, and select the correct code based on your applicant status and address.