Arjun was waved into a FASTag lane on a highway trip, only for the reader to reject his tag and leave him paying double the toll in cash, because his balance had fallen below the toll amount required for that crossing. The minimum FASTag recharge is commonly Rs. 100. However, several issuers allow car-class FASTags to be recharged without a minimum amount, while commercial vehicle tags often have higher minimum top-up requirements. This page covers the bank-wise minimums, how the security deposit and threshold amount differ from your usable balance, whether a minimum balance is required and the routes for recharging and checking your tag.
Why the minimum recharge differs between banks
FASTag runs on the National Electronic Toll Collection system, whose framework is set by NPCI and the Indian Highways Management Company under the Ministry of Road Transport and Highways. Within that framework, the tag is issued by a bank or authorised institution and it is the issuer that sets its own commercial terms, so the minimum recharge, the security deposit and any threshold balance vary from one issuer to the next.
Vehicle class is the other reason the figures differ. A commercial vehicle pays a substantially higher toll at each plaza than a car, so a small balance would not cover even a single crossing. Issuers therefore set higher minimum recharge amounts and deposits for heavier vehicle classes, while often setting no minimum at all for a car, jeep or van.
Bank-wise minimum recharge and security deposit
The table below shows how the minimum recharge and one-time security deposit vary by issuer and vehicle class. These are set by the issuer and revised from time to time, so confirm the current figure with your bank before relying on it.
Issuer | Security deposit | Minimum recharge |
|---|---|---|
SBI | Rs. 200 for a car | Nil for cars |
HDFC Bank | Rs. 200 car/jeep/van; Rs. 300 two-axle LCV; Rs. 400 to Rs. 500 heavy vehicles | Nil for a car; Rs. 200 two-axle LCV; Rs. 500 heavy vehicles |
ICICI Bank | Rs. 200 car; Rs. 300 two-axle LCV; Rs. 400 to Rs. 500 heavy vehicles | Rs. 100 for all vehicle types |
Axis Bank | Rs. 200 for a car | Rs. 100 for all vehicles |
Bank of Baroda | Rs. 200 for a car | Rs. 100 to Rs. 200 for all vehicles |
IDFC First Bank | Rs. 200 for a car | Nil for a car; Rs. 400 two-axle LCV; Rs. 600 to Rs. 800 heavy vehicles |
Other authorised issuers, such as Kotak Mahindra, Punjab National Bank and Canara Bank, set broadly similar figures. The pattern across all of them is the same: a modest refundable deposit for a car and little or no minimum recharge, with higher amounts for commercial classes.
Minimum recharge vs security deposit vs threshold amount
These three terms are often used loosely and confusing them is the single most common source of error, so it is worth separating them clearly.
The security deposit is a one-time, refundable amount the issuer holds against the tag. It serves as a security buffer maintained by the issuer in accordance with its terms and conditions. It is not money you can spend at a toll.
The threshold amount is a minimum balance some issuers require the wallet to hold. Where it applies, the tag is treated as low on balance once it falls below this figure and this portion is not freely spendable either.
The minimum recharge is simply the smallest top-up the issuer will accept in a single transaction, commonly Rs. 100 where a minimum applies at all.
A worked example makes the distinction concrete. If you pay a Rs. 200 security deposit and then add a Rs. 100 top-up, you do not have Rs. 300 of usable toll balance. The Rs. 200 deposit sits with the issuer as a buffer and only the Rs. 100 top-up, less any threshold the issuer holds back, is available to spend at plazas.
Is there a minimum balance you must maintain?
NPCI does not mandate a single fixed minimum balance for FASTag across the system. However, two things function as a minimum in practice. Some issuers apply their own threshold, below which the tag is flagged as low on balance and Kotak Mahindra, for example, sets Rs. 200 for a car. Separately and regardless of any threshold, a tag that does not hold enough to cover a particular crossing will simply be rejected at that plaza. So while there is no universal minimum, the toll you are about to cross sets a practical floor: the balance must at least cover it.
Maximum FASTag recharge and wallet limits
The maximum you can hold in or reload to a FASTag wallet depends on the issuer and, more importantly, on your KYC status and this is a separate question from the minimum, not the same one.
Wallet type | Maximum balance and reload |
|---|---|
Minimum or limited KYC | Balance capped around Rs. 10,000, with a monthly reload limit of about Rs. 10,000 |
Full KYC | Balance up to Rs. 1 lakh at any time, with some issuers allowing up to Rs. 2 lakh and no fixed monthly reload cap |
These caps follow the Reserve Bank of India’s rules for prepaid payment instruments. Since a minimum-KYC wallet is limited to around Rs. 10,000, commercial operators, who both spend more and reload more often, typically hold full-KYC tags. Completing full KYC is the way to lift the ceiling if the limited-KYC cap is too low for your usage.
Does the annual FASTag pass change the minimum recharge?
The Annual FASTag Pass, introduced for private vehicles, replaces per-crossing toll deductions with a single annual payment. For the 2026-27 financial year it costs Rs. 3,075 and it is valid for one year or 200 trips, whichever comes first, for a private, non-commercial car, jeep or van. It is activated on the existing FASTag through the Rajmarg Yatra app or the NHAI website and it applies only at National Highway and National Expressway plazas managed by NHAI.
Holding a pass does not remove the need for a funded wallet. The pass does not cover state expressways and other plazas outside the NHAI network, where the tag deducts the toll normally and once the 200 trips or the year are used up, the tag reverts to standard per-crossing deduction. A pass holder therefore still keeps a working balance on the tag. Confirm the current pass price and trip allowance on nhai.gov.in before purchasing, as these are revised periodically.
How to recharge your FASTag
A FASTag recharge always goes to the issuer that holds the tag, so the first thing to know is who your issuer is; it is named on the tag sticker and in the SMS alerts you receive on the registered mobile number. Once you know it, any of the routes below works.
Through the issuing bank’s own app or net banking, selecting the FASTag or NETC recharge option.
Through the My FASTag app, by entering the vehicle registration number and choosing the issuer.
Through a UPI app such as Google Pay, PhonePe or Paytm, in the bill-payment section under toll or FASTag recharge.
Through the NHAI Prepaid Wallet, where the tag is linked to it rather than to a bank account.
If you do not know your issuer, enter the vehicle number in the My FASTag app or a UPI app’s FASTag section, which identifies the linked issuer before you pay.
How to check your FASTag balance
Through the issuing bank’s app or the SMS alerts sent to the registered mobile number after each deduction.
Through the My FASTag app, by entering the vehicle number.
Through the NHAI missed-call balance enquiry service, by giving a missed call to the published number from the registered mobile.
SMS alerts on deduction and low balance are enabled by default against the registered mobile number, so keeping that number current is what ensures you are warned before the balance runs out.
What happens if your FASTag balance runs low
The sequence when a balance runs low is worth knowing, because it ends in an avoidable penalty.
First, a low-balance SMS alert is sent to the registered mobile number. If the balance is still not topped up and does not cover the next crossing, the tag is rejected at the plaza and enters a blacklisted or low-balance status. Crossing without a functioning tag attracts a double-toll charge, paying twice the applicable fee, which is the penalty the system applies for using a FASTag lane without a working tag.
A blacklisted tag is cleared by recharging it, after which the status updates and normal toll deduction resumes, usually within a short period. Under the current rules, a top-up made close to the time of crossing can still resolve the position, but the reliable fix is not to reach that point at all. Setting up auto-recharge or a UPI auto-pay mandate, which tops the wallet up automatically when it falls below a set level, removes the risk of an unnoticed low balance.
How much should you actually keep in your FASTag?
There is no single right figure, because the sensible working balance depends on how you drive. Rather than a fixed number, size it against your usual toll spending.
An occasional city driver who rarely uses tolled highways needs only a small balance, topped up before a trip.
A regular highway commuter should hold enough to cover several crossings on the usual route, so that a missed recharge does not cause a rejection mid-journey.
A commercial operator, facing higher per-crossing tolls and more frequent travel, needs a larger working balance and usually a full-KYC tag to allow it.
The practical method is to estimate the toll cost of the route you drive most often and keep two or three crossings’ worth on the tag, with auto-recharge set to maintain it. That covers the ordinary case without tying up money you do not need on the tag.
This was the fix for Arjun. He was a regular highway commuter, not an occasional city driver, so a near-empty tag was always going to catch him out eventually. Sizing his balance to a few crossings on his usual route and switching on auto-recharge meant the low-balance rejection that had cost him a double toll would not happen again.
Why valid motor insurance belongs with a funded FASTag
A funded FASTag and valid motor insurance are both routine compliance items, checked in different ways but each capable of interrupting a journey if overlooked. Both are simplest to sort online, before a trip, rather than discovered at a toll plaza or a roadside check.
Zurich Kotak General Insurance offers car insurance and two-wheeler insurance can be reviewed and renewed online, which is a sensible thing to confirm at the same time as topping up the FASTag before a long drive, so that the vehicle is road-ready on both counts.
Conclusion
The minimum FASTag recharge is commonly Rs. 100 and, for many car tags, nil, but the figure that actually matters is not the minimum an issuer will accept: it is keeping enough balance to cover the tolls you are about to cross, as Arjun learned when a low balance cost him double at the plaza. Separate the security deposit and any threshold, which are not spendable, from your usable balance, complete full KYC if you need a higher ceiling and set up auto-recharge so a low balance never becomes a double-toll penalty. Whether you also hold an Annual Pass or not, a working balance on the tag is what keeps the journey moving. Confirm your issuer’s current figures with the bank, since deposits and minimums are set by the issuer and revised over time.
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Frequently asked questions
What is the minimum recharge amount for a FASTag?
Commonly Rs. 100, though it varies by issuer and vehicle class. Several banks set no minimum at all for a car, jeep or van, while heavier commercial classes carry higher minimums.
Does the minimum FASTag recharge differ from bank to bank?
Yes. The issuer sets its own minimum recharge and security deposit within the NPCI framework, so the figures differ between banks and by vehicle class. Confirm your issuer’s current figure with the bank.
Is there a minimum balance I must maintain in my FASTag?
NPCI does not set a single fixed minimum across the system, but some issuers apply their own threshold and any tag must in any case hold enough to cover the crossing you are about to make or it will be rejected at the plaza.
What is the difference between the FASTag security deposit and my usable balance?
The security deposit is a one-time refundable amount held by the issuer as a buffer and returned when the tag is closed; it cannot be spent at tolls. Your usable balance is only what you have recharged, less any threshold the issuer holds back.
What is the maximum amount I can keep in or recharge to my FASTag?
A minimum-KYC wallet is capped around Rs. 10,000, with a monthly reload limit of about Rs. 10,000. A full-KYC wallet allows a balance up to Rs. 1 lakh and up to Rs. 2 lakh with some issuers, without a fixed monthly cap.
What happens at a toll plaza if my FASTag balance is too low?
The tag is rejected and flagged as low-balance or blacklisted and crossing without a functioning tag attracts a double-toll charge. Recharging clears the status and restores normal deduction.
Can my FASTag get blacklisted for low balance and how do I clear it?
Yes. A tag with insufficient balance is blacklisted at the plaza. It is cleared by recharging the wallet, after which the status updates and normal toll deduction resumes within a short period.
How can I check my FASTag balance?
Through the issuing bank’s app or its SMS alerts, through the My FASTag app by entering the vehicle number or through the NHAI missed-call balance enquiry service from the registered mobile number.
Is the FASTag security deposit refundable?
Yes. The security deposit is refundable and is returned when the FASTag account is closed, after any outstanding toll dues are adjusted.
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