As i have got married i had to change my name on my bank acct and in my office but the name on my pan card is ?

Online Application for Request for New PAN Card Or/ And Changes Or Correction in PAN Data (PAN Change Request Form), read the instructions here -- https://tin.tin.nsdl.com/pan/correction....
Then go to the bottom on the page, and Apply for New PAN Card Or / And Changes Or Correction in PAN Data select Individual (or your required choice) and click Select. This will open the Form. Fill the Form and Submit.

Know Your AO Code. You need to mention AO code on your PAN application. For information on AO code, http://tin.nsdl.com/aocode.asp

You will have to make an affidavit in the presence of a Notary Public or 1st Class Judicial Magistrate in a standard format. It is better that the format is as prescribed for issuance Passport. That will serve dual purpose - for passport as well as PAN card. Re-apply for your PAN Card attaching copy of the affidavit citing your old PAN. Your old PAN will remain, a new card with new name will be issued. You can make the application online with the name change option. As there is no change in your PAN you will get all TDS credit. I suppose you are aware that you cannot have more than one PAN.

contact: [email protected]
OR call: +91 9371 31 8848

They will get you the card with changed name but same PAN number within 10 days.
They are helping global Indians with all kinds of PAN queries.

There will no changes in terms of TAX, as PAN is "Permanent account Number", once alloted, will have track of all your taxation requirements even if u change name any number of times.

You have to obtain new PAN card. Surrender your present card. Consult tax consultant.