Income tax filling password

Get a copy of last year ITR V from which you will get acknowlegment number.

then go to incometaxefiling.gov.in site click on forgot password and enter acknowledgement number and bank a/c number. click Validate and enter new password and other details.

another option 

you're not able to reset the password with any of the three options above, please send an email to - validate @ incometaxindia.gov.in with the following details

• PAN
• PAN holder's Name
• Date of Birth / Date of Incorporation
• Father's Name
• Registered PAN address.

There are 3 ways to recover your password

Refer this article for more details - https://www.charteredclub.com/income-tax-efiling-password/