INDIATODAY MARCH-2017. You must have already heard that from this year filling of income tax returns will require you to quote your Aadhaar number. In case you don't have the Aadhaar card and you wish to pay taxes, you have to get one now. But the Aadhaar doesn't just stop at the income tax. The Aadhaar number will also have to be linked to the PAN (permanent account number) card or else the PAN card will be cancelled.