Filing online rectification for wrong TAN number

In case you have filed the return online in India and in case you made a mistake in typing the TAN number which came up in the intimation under section 143(1) then the following procedure has to be followed:

1. Login with the UserID and passwd at the Income tax webpage
2. On the right box you can click on the "Rectification Request"
3. Fill the Assessment Year as in 143(1)
4. Fill the Communication Reference Number number in 143(1) along with the date from the 143(1). Please note any error in typing can cause rectification request to be rejected.
5. For Rectification Request Type select: "TAN Wrongly Quoted"
6. Select "Taxpayer is correcting data for tax credit mismatch only"
7. Please type the corrected TAN number and all the details like income etc.
8. File the request. Please note in case of TAN error no need to refile the xml again.
9. It gets corrected in a months time and you can track the status in this same page.

Hope this helps. Please note in case you have not filed online you will have to do this over post and can take more than 6 months and more.