To apply for a PAN card online in Chandigarh, India, you can follow these steps:

1. Visit the official website of NSDL or UTIITSL, the two government-approved agencies for issuing PAN cards in India.
2. Click on the “New PAN Card (Form 49A)” option.
3. Fill out the online application form with all the required details, including personal information such as name, date of birth, address, and contact details.
4. Upload supporting documents such as proof of identity, proof of address, and proof of date of birth.
5. Pay the fee online using a credit/debit card, internet banking, or other available options.
6. Submit the application and take note of the acknowledgment number generated.
7. Print and sign the acknowledgment form and affix two recent passport-sized photographs on it.
8. Send the signed acknowledgment form along with the supporting documents to the address mentioned on the NSDL or UTIITSL website.

After submitting the application, you can track the status of your PAN card application using the acknowledgment number provided. It typically takes around 15-20 days to receive your PAN card after the application is processed.