Child Aadhaar Biometric Update: Free Till 30 September, ₹125 Fee From 1 October
Last week my sister called me from Lucknow, a little rattled. Her son’s school had sent a WhatsApp note saying his Aadhaar “biometrics were pending” and that the free window closes on 30 September. He’s nine. She had no idea anything was due, because nobody had asked for his fingerprints when they made his Aadhaar as a toddler. If that sounds like your house too, here’s what you need to know about the child Aadhaar biometric update: who needs it, what it costs after 30 September 2026, and how to get it done in the next two days without losing a whole Saturday in a queue.
We checked UIDAI’s own charges page and the government’s press releases late on 28 September. As of that check, there is no extension. The waiver still ends on Wednesday, 30 September.
What is the child Aadhaar biometric update, and why does it exist?
When a child under five gets an Aadhaar, UIDAI records only a photograph and basic details like name, date of birth, gender and address, usually backed by a birth certificate. Fingerprints and iris scans aren’t taken because they’re still changing at that age. People often call this card the “Baal Aadhaar” or blue Aadhaar.
Because of that gap, the rules require two updates later on. The first mandatory biometric update (MBU-1) is due when the child turns 5, and the second (MBU-2) when the child turns 15. At each one, the centre captures fresh fingerprints, both irises and a new photo. The Aadhaar number itself stays the same. Only the stored biometrics get replaced.
Most parents miss the first one because nobody reminds them. There’s no SMS when your child turns five. So lakhs of kids who are now 8, 10 or 12 are still carrying an Aadhaar with no fingerprints linked to it.
Child Aadhaar biometric update fee: what’s free and what costs ₹125
This is where the confusion is. The fee depends on the child’s age when you actually walk into the centre, not on when the update was due. Here’s how UIDAI’s published charges work out.
| Child’s age on the day of update | Which update | Fee till 30 Sep 2026 | Fee from 1 Oct 2026 |
|---|---|---|---|
| Below 5 | None due (no biometrics taken) | Not applicable | Not applicable |
| 5 to 7 | First update (MBU-1) | Free | Free |
| 7 to 15 | First update done late | Free (special waiver) | ₹125 |
| 15 to 17 | Second update (MBU-2) | Free | Free |
| Above 17 | Any biometric update | ₹125 | ₹125 |
So the kids who actually lose out on 1 October are those between 7 and 15 who never did their first update. UIDAI waived the ₹125 for this group from 1 October 2025 for one year, and PIB’s release from 4 October 2025 said the move would benefit about 6 crore children. That year runs out on 30 September 2026.
If your child is 6, relax a bit. The 5-to-7 window stays free under the standing rule. Same story for a 16-year-old doing the second update. But if your daughter is 11 and her Aadhaar was made when she was three, the clock is ticking for her.
Is ₹125 really a big deal?
For one child, probably not. For a family with three kids aged 8, 10 and 13, all pending, it’s ₹375 plus another trip. And in some districts, school camps have been doing these updates on campus. Once the waiver ends, there’s a fair chance those camps slow down, and you’ll be queueing at a regular centre instead. That hassle is the bigger cost.
Aadhaar update fee from 1 October: what changes and what doesn’t
The Aadhaar update fee from 1 October is ₹125 for a late first update for children aged 7 to 15. That’s the only change the waiver’s expiry brings. The other charges on UIDAI’s list stay as they were. A demographic change (name, address, date of birth, mobile) costs ₹75 if you do it separately, but it’s free if you do it along with a biometric update. Document updates through the myAadhaar portal are free till 14 June 2027, according to UIDAI’s current fee table.
One wrinkle worth knowing: UIDAI’s fee table says the mandatory biometric update has to be a standalone transaction. The operator can’t club it with other paid services in the same slip. If you also want to fix a spelling mistake in your child’s name, ask the operator how they’ll process it, because practice differs a little from centre to centre.
Why the mandatory biometric update matters beyond the fee
Honestly, the ₹125 is the least of it. A child Aadhaar biometric update that’s still pending means the Aadhaar has no usable fingerprints behind it, and that Aadhaar can fail when someone tries to authenticate it with a fingerprint or iris scan. That shows up at awkward moments.
Think about school admissions, scholarship portals, entrance exam registrations like NEET, JEE and CUET (CNBC-TV18 flagged these in its 24 September explainer), and Direct Benefit Transfer schemes that pay money straight into a bank account. Many of these now expect a working Aadhaar check. PIB’s 18 August 2026 release made the same point about schemes and exams, and noted that more than 2 crore of these updates had already been done in about 1.56 lakh schools.
There’s also a sharper risk. In July 2025, UIDAI said that if the mandatory biometric update isn’t done even after the child turns 7, the Aadhaar number may be deactivated under existing rules. Business Standard and The Times of India both reported that advisory at the time. A deactivated Aadhaar is a much bigger headache than a ₹125 fee, because you have to get it reactivated before anything linked to it works again.
If your family gets money through a scheme like PM-KISAN instalments or a state scholarship, this is exactly the kind of small paperwork gap that causes a payment to bounce months later.
How to do the child Aadhaar biometric update before 30 September
You can’t do this online. Fingerprints and iris scans need a physical machine, so you have to take the child to an enrolment or update centre. Here’s the practical sequence.
Step 1: Check whether your child’s update is actually pending
If your child was enrolled before age 5 and has never given fingerprints at an Aadhaar centre, the update is pending. Many schools can now see this too. UIDAI has been using the education ministry’s UDISE+ system to flag which students still need it, so ask the class teacher if you’re unsure.
Step 2: Find a centre and book if you can
Use the centre locator on UIDAI’s site or the Aadhaar Seva Kendra page, which also lists the current update charges. UIDAI-run Seva Kendras take online appointments. Enrolment centres inside banks and post offices usually work on a walk-in basis, and with the deadline two days away, go early. Some branches stop handing out tokens by mid-morning.
Step 3: Carry the right things
You’ll need the child’s Aadhaar number (the card or the e-Aadhaar printout), the child, and ideally one parent’s Aadhaar. You don’t normally need fresh documents for a pure biometric update, since you’re only replacing fingerprints, iris and photo. If you want to change any demographic detail at the same visit, carry the supporting proof, like a birth certificate for date of birth.
Step 4: At the counter
The operator fills the update form, captures ten fingerprints, both irises and a photo. For younger kids this can take a couple of attempts, since small fingers don’t always register cleanly. Keep them calm and fed. You’ll get an acknowledgement slip with an Update Request Number (URN). Hold on to it.
Step 5: Track the status
You can check progress on the myAadhaar portal using the URN. It usually takes a few days to a couple of weeks for the update to reflect. You don’t need a new card, though you can download a fresh e-Aadhaar once the update goes through.
A quick worked example for a family with two kids
Take the Sharma family in Indore. Their son Aarav is 12, enrolled at age 2. Their daughter Myra is 6, enrolled at age 1. Neither has done the first biometric update.
If they go on 29 September, both updates are free. Aarav falls under the special waiver and Myra under the standing 5-to-7 rule. Total cost: zero.
If they go on 5 October, Aarav’s update costs ₹125 and Myra’s is still free. Total: ₹125.
One more scenario is worth spelling out, because it trips people up.
If they wait until Myra turns 7 next year and go then, both updates are chargeable, which makes it ₹250, plus a real risk that Aarav’s Aadhaar has already hit an authentication problem somewhere by then.
Does the child need a bank account or PAN linked to Aadhaar?
Not for this update. But if you’ve opened a minor’s savings account, a PPF account for your child or a Sukanya Samriddhi account, the bank or post office will have the child’s Aadhaar on record. A working Aadhaar makes later KYC refreshes smoother. When the child turns 18 and wants a PAN, the same applies; you can read how PAN-Aadhaar linking works for adults.
What if you can’t make it by 30 September?
Then you pay ₹125 if your child is between 7 and 15, and you still do it. Don’t skip it just because the free window has closed. Centres will keep doing the child Aadhaar biometric update after 30 September at the new rate, and the Aadhaar update fee from 1 October is a one-time charge per update.
UIDAI has extended waivers before, and it could still announce something at the last minute. We’ll update this page if it does. But planning around a possible extension is a gamble, and the queues on 29 and 30 September are going to be long either way.
FAQ: child Aadhaar biometric update
Is the child Aadhaar biometric update free after 30 September 2026?
Depends on age. For children aged 5 to 7 and 15 to 17 it stays free. For a late first update between ages 7 and 15, the fee becomes ₹125 from 1 October 2026.
Can I do the mandatory biometric update online?
No. Fingerprints and iris scans have to be captured on a machine at an Aadhaar centre.
My child is 4. Do I need to do anything now?
Not yet. No biometrics are taken below age 5, so the first update is due once your child turns five, and it’s free if done before seven.
What documents do I need for a Baal Aadhaar biometric update?
Usually just the child’s Aadhaar and the child in person. Bring proof documents only if you’re changing a demographic detail like date of birth or address in the same visit.
Will my child get a new Aadhaar number after the update?
No, the number stays the same. Only the stored photo, fingerprints and iris data change, and you can download an updated e-Aadhaar once it’s processed.
What happens if the update is never done?
Authentication can start failing for exams, scholarships and scheme payments. UIDAI has also said the Aadhaar may be deactivated if the first update isn’t done after age 7.
If your child Aadhaar biometric update is still pending, set an alarm for tomorrow morning and find the nearest centre tonight. It’s a 20-minute job at the counter, even if the queue takes longer. And if the school is running a camp this week, that’s the easiest route of all. Share this with the parents’ WhatsApp group. Somebody there hasn’t heard about the deadline yet.
Disclaimer: Fee and deadline details are based on UIDAI and PIB information available on 28 September 2026. UIDAI can revise charges or extend waivers, so check the official site before visiting a centre.
