First the candidate has to get Gazette Notification.

Next, the candidate has to apply to the Income Tax Authorities in the prescribed form (enclosed) requesting for change of name on the Pan Card.

Applications forms:

For application format, letters, affidavit and other necessary documents for change of name, lawguide provides services for preparation of documentation on payment of Rs.500/- towards service charges, which may be credited in the Bank A/c. given below:-

Bank Account Details:

STATE BANK OF INDIA
Account Name: D.V. Madhusudhan Rao
Account Number:.
20113864679
Branch:
Chaitanyapuri
Branch Code:
4354
IFSC Code: 
SBIN0004354
Address: CHAITANYAPURI, NEAR PETROL BUNK,
HYDERABAD ,PIN – 500060