people with aadhaar will have to link it with their bank accounts by december 31 2017 and those without an aadhaar will have to get it done by march 31 2018 if you are a kotak mahindra bank customer follow these steps to seed your aadhaar with your account through a kotak mahindra bank branch 1 visit the closest kotak mahindra branch 2 collect the application form to link aadhaar card to the bank account from the counter 3 fill up the correct information and submit it along with a copy of your aadhaar card at the counter 4 once the linking is done the bank sends a confirmation to the applicant via sms or email through internet banking 1 login into the banks net banking portal 2 once you login under quick links tab select banking then click on profileupdate contact details 3 after this click on update your aadhaar through the mobile app 1 login to the banks app 2 go to profile 3 click on aadhaar update sending an sms send aadhaarspace12digitaadhaar numberspacelast 4 digits of account number to 5676788