Is there any fee involved for updation in Aadhaar details?

Yes, for updation in Aadhaar, either Demographic or Biometric, you have to pay Rs. 50/- (including taxes) to the service provider each time you get your details updated. You can also click on Charges for Various UIDAI Services at Aadhaar Kendra (PEC) on for UIDAI approved Fee Structure