All existing assessees or taxpayers or persons who are required to file a return of income, even on behalf of others, must have a PAN. Any person, who intends to enter into economic or financial transactions where quoting PAN is mandatory, must also have a PAN.

Yes. As per procedure prescribed by Income Tax Department, third party verification may be conducted to verify identity and address of PAN applicants along with genuineness of documents submitted by them during PAN application. If found fake, the Income Tax Department may take suitable action.

e-PAN is a digitally signed PAN card issued in electronic form and it is a valid proof of allotment of PAN.

Section 139AA of the Income Tax Act states that every person who has PAN as on July 1, 2017 is required to link his/her PAN with his/her Aadhaar number. Section 139AA also requires mandatory quoting of Aadhaar while applying for new PAN and also while filing return.

This happens due to PAN not linked to Aadhaar or NRI status not updated to the income tax authorities.