If you have ever bought a new FASTag because the old one stopped working, or because a dealer slapped a fresh sticker on your windscreen at delivery, you may now have two or more FASTags tied to the same vehicle. Under NHAI's "One Vehicle, One FASTag" rule, that is a problem - and in 2026, with toll plazas going fully digital, it is one that can cost you money at the toll.
This guide explains the rule in plain terms: what it is, why the National Highways Authority of India (NHAI) brought it in, what actually happens to your extra tags, and the steps to make sure the one tag you keep is the active, working one. We focus on what an SBI FASTag holder needs to do, but the logic is the same across every issuing bank.
What the One Vehicle, One FASTag rule actually says
NHAI, through its arm IHMCL, enforced the "One Vehicle, One FASTag" rule nationwide from 1 April 2024. The principle is simple: a single vehicle registration number may have only one active FASTag, and a single FASTag may be used on only one vehicle. The two abuses it targets are equally simple - people using one tag across multiple cars, and people holding multiple tags against one car.
When the system detects more than one FASTag mapped to the same registration number, the rule keeps the most recently issued tag active and deactivates or blacklists the earlier ones. So the tag you obtained last is usually the one that survives - not necessarily the one you have been recharging or the one you think of as your 'main' tag. This is one of the most common reasons a working-looking FASTag suddenly fails at a plaza.
- One active FASTag per vehicle registration number - no exceptions for private cars.
- One FASTag per vehicle - the same sticker cannot be moved between cars.
- The latest-issued tag stays active; older duplicate tags are deactivated or blacklisted.
- The rule was tied to mandatory KYC - latest tags with incomplete/minimum KYC faced deactivation from 31 January 2024, and KYC compliance was tightened again through 2024.
Why NHAI brought in the rule
Before this rule, duplicate tags caused real operational mess: wrong vehicles getting charged, tags being passed around to dodge tolls, and toll-lane disputes when a scanner picked up the 'wrong' sticker. Linking exactly one verified tag to one registration number lets the electronic toll-collection system charge the correct account every time and keeps the data cleaner against the VAHAN vehicle database.
It also closed a fraud gap. A FASTag is bound to a specific vehicle via its registration details; using it on another vehicle can get it blacklisted. Tightening this to one-tag-one-vehicle made toll collection faster and harder to game - which matters more as India moves toward barrier-free, digital-only tolling.
What 'deactivated' or 'blacklisted' means for you in 2026
A deactivated or blacklisted FASTag will not deduct toll. At a manned lane that historically meant delay; in 2026 it increasingly means paying more. NHAI has directed toll operators to stop accepting cash in the dedicated cash lanes (reported effective 10 April 2026), so the practical default at national-highway plazas is now FASTag, with UPI as a fallback at the booth.
If your tag is not installed, not working, blacklisted, or has insufficient balance, the widely reported outcome is that you pay 1.25 times (a 25% surcharge on) the normal toll for that plaza - including when you fall back to UPI. A duplicate tag that the system blacklisted under the One Vehicle, One FASTag rule falls squarely into the 'not working' category, even if there is balance sitting in it. That is why clearing up duplicates is no longer optional housekeeping. (Exact penalty mechanics can vary by plaza and over time - confirm the current rule before you travel.)
- Blacklisted tag = no deduction, even with a positive balance.
- From the April 2026 rollout, a non-working tag typically attracts about 1.25x the toll - even if you pay by UPI at the booth.
- Common blacklist triggers: duplicate tags, incomplete KYC, low balance, or a tag reported on the wrong vehicle.
How to check whether you have a duplicate or blacklisted tag
Start by finding out how many tags are mapped to your vehicle and which one is active. The quickest checks are below.
If a check shows an old tag still 'active' alongside a newer one, treat the older one as the duplicate to close. If your current tag shows as blacklisted, the usual causes are an unclosed duplicate, incomplete KYC, or a low balance - fix the cause first, then ask the issuer to reactivate.
- NHAI FASTag portal: log in at the IHMCL FASTag portal (fastag.ihmcl.com) and check your profile for tag status and KYC status.
- Issuing bank app/portal: SBI FASTag holders can check status via the SBI FASTag portal or by calling SBI FASTag customer care on 1800-11-0018.
- NHAI helpline 1033: for general FASTag/toll status and complaints.
- Physical check: more than one sticker on the windscreen is a clear red flag - keep only the active one.
How to comply: keep one tag, close the rest
Compliance is a short checklist. Decide which single tag you will keep - ideally the one with completed KYC and a bank you are happy with - then close every other tag against that vehicle and confirm the keeper is active and topped up.
For SBI FASTag specifically, you can raise a closure/deactivation request through the SBI FASTag portal, by calling 1800-11-0018, or by emailing helpdesk.fastag@sbi.co.in with your vehicle registration number and tag ID. Deactivation and any balance refund typically take a few business days; timelines and any charges are set by the bank, so confirm them when you raise the request. If you want to move from another bank's tag to a fresh one, the old tag must be formally closed by that bank first - simply peeling off the sticker does not deactivate it in the system.
- Pick the keeper tag (completed KYC, preferred bank, good standing).
- Contact each other issuing bank and request deactivation/closure of the duplicate tag.
- Confirm KYC is complete on the keeper tag and keep a working balance.
- Physically remove old stickers so scanners cannot read a closed tag.
- Re-check status after a few working days to confirm only one active tag remains.
Where the Annual Pass fits in
For private cars that mostly run on national highways, NHAI's FASTag Annual Pass is worth knowing about - and it reinforces the same one-tag principle. Launched on 15 August 2025, it was priced at about Rs 3,000 and was revised to roughly Rs 3,075 from 1 April 2026. Treat any figure as indicative and confirm the current price with NHAI or your issuer before paying. It is valid for one year or up to 200 trips on eligible national highways and national expressways, whichever comes first.
Crucially, the pass is linked to one vehicle's registration number and one active FASTag, and is non-transferable. It works only for private, non-commercial vehicles (cars, jeeps, vans) verifiable on VAHAN, and it does not cover state highways or many state/privately operated expressways. So before activating any annual pass, your single FASTag must already be clean, KYC-complete, and active - exactly what the One Vehicle, One FASTag rule requires.