When Is My Child's Aadhaar (Aadhar) Biometric Update Due? (Calculator)

When is your child's biometric update due?

Enter your child's date of birth. The calculator shows which age band applies today, the fee today and, if an update is still ahead, its due date and free window (from the 5th to the 7th birthday, or from the 15th to the 17th).

Works only on your device. Nothing you type is sent anywhere. Never type an Aadhaar number here.

The calculator counts each age band up to the later birthday: a child who is 5 or 6 gets the free first update, and a child who is 15 or 16 gets the free second update. UIDAI's fee chart only says "5–7" and "15–17", so if the visit falls on the exact 7th or 17th birthday (or the 15th birthday after September 2027), confirm the fee at the centre before the update starts. For every other Aadhaar fee, try our fee calculator.

What is due at each age, and what does it cost?

UIDAI calls these the mandatory biometric updates (MBU). The fees come from UIDAI's fee chart, its Aadhaar Seva Kendra page and the 2026 enrolment and update forms.

• Under 5: a Baal Aadhaar holds only the child's photo. Fingerprints and iris are taken from age 5. If the photo needs changing before then, a photo-only update costs ₹125 in our counter team's experience (UIDAI's fee box lists no separate fee for it).
• First update at 5: the child's photo, fingerprints and iris are captured. It is free once between 5 and 7.
• Second update at 15: the biometrics are captured again. It is free once between 15 and 17.
• Between 7 and 15: a missed first update is free until 30 Sep 2027. UIDAI's Aadhaar Seva Kendra page (last reviewed 9 Oct 2026) and the 2026 forms say "till 30.9.2027"; news reports describe this as a one-year extension of the earlier 30 Sep 2026 date.
• Otherwise: a biometric update costs ₹125.

UIDAI says an MBU must be a stand-alone transaction, while the 2026 forms say written (demographic) changes are free when done with a biometric update. We haven't confirmed how centres apply this to a child's free update, so ask before you add an address or mobile change.

Full guide: Child biometric update (5 & 15).

What should you carry for the child's update?

• The child. The photo, fingerprints and iris are captured on the spot, so the child must be there in person.
• The child's Aadhaar number: the update form asks for it, so carry the letter, an e-Aadhaar print or the PVC card.
• A parent or legal guardian, if you can. UIDAI's 2026 forms for children are signed by the mother, father or a legal guardian. We suggest one of them goes with the child; if someone else will take the child, ask the centre first.

Lost the child's Aadhaar number? Find it first with Retrieve EID/UID, using the registered mobile or email.

Where can you get the child's update done?

Photo, fingerprint and iris updates can't be done online, on myAadhaar or in the Aadhaar App.

• Timings: Aadhaar Seva Kendras open 7 days a week, 9:30 am to 5:30 pm, and close on holidays. The centre our team visited closes for lunch from 1 to 2 pm; other centres may keep different hours.
• Before you go, read Aadhaar centres: what to expect and Book an Aadhaar appointment. For the postman route, see Aadhaar services at home (IPPB).

What happens if the child's update is missed?

• The Aadhaar may be deactivated. A missed child MBU is one of the deactivation reasons in UIDAI's rules. UIDAI is reported to send SMS reminders.
• Exams and scholarships can get stuck. Families report that a missed update blocked NEET, JEE or CUET registration and scholarship applications.
• It may cost money. At 7–15 it is free until 30 Sep 2027, then ₹125; from 17 it costs ₹125.

How strict is the timing? The 2016 regulations as printed in UIDAI's 2021 handbook say a child who doesn't do the update within 2 years of turning 5 or 15 is deactivated, and that the number is omitted if it is still not done 1 year after deactivation. That handbook is old, so check the current rules; today's sources say only "may be deactivated".

The fix is the same in every case: take the child to an Aadhaar centre and do the biometric update. If the Aadhaar is already deactivated, see Aadhaar deactivated: missed child update.

What changes for children born on or after 1 Oct 2023?

For these children, a birth certificate is mandatory, and it is the only proof of date of birth UIDAI's 2026 forms accept. The biometric updates at 5 and 15 work the same way. If the date of birth ever needs fixing, start with the birth certificate.

How do you do the child's update?

To check the status, open Check Enrolment / Update Status on myAadhaar and enter the number from the slip. Once the update is done, download a fresh e-Aadhaar for the child.

What problems come up, and how do you fix them?

Bottom line

Mark two birthdays: 5 and 15. The update is free until 7 and 17, and a missed first update is free at 7–15 until 30 Sep 2027. Take the child and the child's Aadhaar to a centre, keep the slip and check the status. For help, UIDAI's free helpline is 1947.