Motor Third-Party Insurance: Why Section 146 of the Motor Vehicles Act Makes It Mandatory and What Happens Without It

Indian roads logged more than 4.6 lakh accidents in calendar 2022, the highest figure in three decades, yet a 2019 Standing Committee submission to Parliament estimated that more than half the vehicles on the road carry no valid insurance. Section 146 of the Motor Vehicles Act 1988 was meant to close this gap by making third-party liability cover compulsory for every motor vehicle used in a public place. The rule sits inside Chapter XI of the Act, was reinforced by the Motor Vehicles (Amendment) Act 2019, and is enforced by IRDAI through periodically-notified premium tariffs. This briefing breaks down the statutory scaffolding, the IRDAI rate framework, the worked arithmetic of a typical policy, and the trapdoors that catch policyholders at the claim window.

The Rule / Product

Section 146(1) of the Motor Vehicles Act 1988 reads: "no person shall use, except as a passenger, a motor vehicle in a public place, unless there is in force in relation to the use of the vehicle by that person or that other person, as the case may be, a policy of insurance complying with the requirements of this Chapter." Chapter XI runs from Section 145 to Section 164 and is the legislative spine of motor insurance in India. The mandate covers liability for death of or bodily injury to a third party, including a fare-paying passenger in a commercial vehicle, and damage to a third party's property up to a statutory limit.

The Act does not require own-damage protection. A driver may legally circulate with a "Liability Only" or "Act Only" policy that covers nothing on his own car. Section 145 of the Act defines a "third party" broadly enough to include passengers, pedestrians, and the Government, but excludes the insured, the insurer, and the named driver from claiming as a third party in respect of their own actions.

The premium for the third-party portion is not set by the insurer. Section 14(2)(d) of the Insurance Regulatory and Development Authority Act 1999 vests rate-making authority in IRDAI, and motor third-party rates are notified periodically. The most recent notified revision is IRDAI's order dated 25 May 2022, effective from 1 June 2022. No fresh notification has issued since, so the 2022 tariff continues to apply through FY 2025-26.

Following the Supreme Court direction in S. Rajaseekaran v. Union of India in 2018, IRDAI mandated long-term third-party cover for new vehicles with effect from 1 September 2018. The compulsion runs for five years on a new two-wheeler and three years on a new private car. The owner cannot opt for one-year third-party renewal until the long-term block expires. The own-damage component, by contrast, was reverted to one-year tenure following IRDAI's circular dated 6 June 2020 that withdrew the bundled long-term package option.

Why It Matters

The penalty for driving without third-party cover sits in Section 196 of the Act. Following the Motor Vehicles (Amendment) Act 2019, a first offence attracts a fine of up to Rs 2,000, imprisonment of up to three months, or both. A subsequent offence draws a fine of up to Rs 4,000, imprisonment of up to three months, or both. The earlier ceiling was Rs 1,000 per offence, unchanged since the 1988 Act came into force, and Parliament's Standing Committee on Transport had flagged the inadequacy through several reports between 2014 and 2018.

The civil exposure is far heavier. Under Section 165, every state has constituted Motor Accident Claims Tribunals to adjudicate compensation. Awards in fatal-accident cases run into tens of lakhs once the multiplier method laid down in Sarla Verma v. Delhi Transport Corporation (2009) and refined in National Insurance Co. v. Pranay Sethi (2017) is applied. An uninsured owner is personally liable for the entire decree; tribunals can attach property, salary, and bank accounts to satisfy an award.

Beyond the fine and the tribunal decree, an uninsured driver risks vehicle impoundment under Section 207, suspension of the driving licence under Section 19, and refusal of fitness renewal in commercial categories. Banks and finance companies typically include continuous insurance as a covenant in vehicle loan agreements, so a lapse can also trigger loan default consequences and a credit-bureau adverse remark within 30 to 90 days of the missed renewal.

The economic stakes are larger still. The Ministry of Road Transport and Highways' "Road Accidents in India" series puts annual road fatalities above 1.6 lakh in recent years, the highest absolute number on record. Every uninsured fatal collision shifts the burden either to the victim's family or to the Section 161 Hit-and-Run Compensation Scheme, whose ceiling, revised by Government notification dated 25 February 2022, is Rs 2 lakh in death cases and Rs 50,000 for grievous hurt. That sum is a fraction of what a tribunal would award against a private insurer.

Worked Numbers

The IRDAI 2022 notification fixes the third-party premium by vehicle class and engine capacity. The table below reproduces the slabs that apply to the bulk of the private fleet.

Source: IRDAI Notification dated 25 May 2022. Goods and Services Tax at 18 percent applies on top of the listed sum, so the cash outflow is roughly 1.18 times the tariff.

Long-term tenure for new vehicles is computed on a multi-year extension of the same base. For a new petrol hatchback in the 1,000-1,500 cc class, the three-year third-party premium is Rs 10,540 before GST. For a new commuter motorcycle in the 75-150 cc band, the five-year third-party premium is Rs 3,851 before GST. The owner pays the entire amount upfront at the dealership, and the long-term cover sits on top of a one-year own-damage policy if comprehensive protection is desired.

Consider a worked illustration. Anil owns a 2018 Maruti Swift with a 1,197 cc petrol engine. His third-party premium for FY 2025-26 is Rs 3,416 plus 18 percent GST, taking the total to Rs 4,031. If he adds an own-damage cover, the insurer applies the Insured Declared Value method: vehicle invoice cost less depreciation per IRDAI's standard schedule. After seven years, depreciation is capped, and the vehicle is treated under "obsolete model" rules where IDV is mutually agreed. Suppose IDV is fixed at Rs 2.20 lakh and the OD rate works out to 2.5 percent before discounts. The OD premium is Rs 5,500. With a 50 percent No Claim Bonus, the OD premium drops to Rs 2,750. Adding TP and GST, Anil's annual outflow is roughly Rs 7,250. The bound-by-statute portion, however, is only the Rs 4,031 third-party slice.

The two-wheeler premium calculator walks through the same IRDAI 2022 slabs, so a 110 cc commuter shows the Rs 714 annual third-party tariff before GST. The term insurance premium calculator helps benchmark the cost of a Rs 1 crore life cover against the motor outflow. Travellers driving abroad on Indian licences should also examine the travel insurance module, since domestic motor TP cover does not extend across borders.

A second illustration explains the long-term math at the showroom. Riya buys a new Honda Activa 110 cc on 9 May 2026. She must pay the five-year third-party premium of Rs 3,851 plus 18 percent GST, that is Rs 4,544, at the time of registration. Her own-damage policy is for one year only at, say, Rs 1,800. After GST the OD outflow is Rs 2,124. Total at vehicle delivery is Rs 6,668. From year 2 onwards, Riya pays only the OD premium each year (with NCB benefits accruing) until 2031, when the long-term TP block ends and she must rebuy a one-year TP cover for Rs 714 plus GST.

The numbers underline why even a budget owner cannot escape the third-party line. It is fixed, regulated, and accounts for roughly 30 to 60 percent of the typical annual premium for a small private car.

Pitfalls

The first trap is the assumption that a third-party policy covers the policyholder's vehicle. It does not. A "Liability Only" wording excludes own-damage entirely. Owners in the seven-year-plus age bracket frequently downgrade to TP only to save 30 to 40 percent on the premium, and find themselves uninsured for repairs after a self-collision or a flood event.

The second trap concerns the unauthorised driver. Section 149(2)(a)(ii) of the Act allows the insurer to disclaim TP liability if the vehicle was driven by a person without an effective driving licence. The Supreme Court in National Insurance Co. v. Swaran Singh (2004) held that the insurer must still pay the third party but is entitled to recover from the owner under a "pay and recover" direction. The owner therefore loses the financial protection the policy was intended to provide.

The third trap is the use of a private vehicle for commercial purposes. A policy issued for "private car" use is voided in respect of own-damage if the vehicle was being used as a taxi or for hire and reward. The third-party cover survives, but the insurer recovers the paid amount from the owner under standard "fundamental breach" doctrine, applied repeatedly by tribunals since the Supreme Court's ruling in B. V. Nagaraju v. Oriental Insurance Co. (1996).

The fourth trap is the lapsed policy. Renewal must be effected before the expiry date. A vehicle that suffers an accident on the day of expiry, even one minute past midnight, falls outside the policy. Some insurers offer a 30-day grace period for own-damage continuity bonus, but no grace period applies to liability cover under Section 146 of the Act.

The fifth trap relates to long-term policies. A new car owner who sells the vehicle within the three-year long-term TP period must execute a transfer of policy under Section 157 within 14 days of the date of transfer. Failure to do so allows the insurer to disclaim third-party liability arising after the sale, leaving the original owner exposed to a tribunal decree.

The sixth trap is the personal accident cover for owner-driver. IRDAI made a standalone Compulsory Personal Accident Cover for owner-driver mandatory through circular dated 4 September 2018 with effect from 1 January 2019. The cover provides Rs 15 lakh on death or permanent total disablement, at a premium of Rs 750 per year per vehicle. A separate CPA policy is required for each vehicle owned, but a customer holding a CPA cover via any one motor policy can opt out of duplicate CPA on additional vehicles. Owners frequently miss this opt-out, paying Rs 750 annually for redundant cover.

For deeper background on adjacent products, the ULIP versus traditional endowment article covers the Finance Act 2025 redemption tax shift, and the pre-existing disease three-year cap explainer covers IRDAI's 2024 Master Circular reduction from 48 months to 36 months.

FAQ

Is third-party motor insurance compulsory in India?

Yes. Section 146 of the Motor Vehicles Act 1988 makes it mandatory for every vehicle used in a public place. Driving without it attracts a fine of up to Rs 2,000 for a first offence and up to Rs 4,000 for subsequent offences, plus imprisonment of up to three months under Section 196 as amended by the Motor Vehicles (Amendment) Act 2019.

How is the third-party premium decided?

IRDAI notifies the rates under its statutory authority in Section 14(2)(d) of the IRDA Act 1999. The current rates derive from IRDAI's notification dated 25 May 2022, effective from 1 June 2022. Insurers cannot increase or discount these tariffs.

What is the difference between third-party and comprehensive cover?

Third-party cover pays for injury, death, or property damage caused to others. A comprehensive policy adds own-damage protection, theft, fire, natural calamity damage, and the mandatory CPA cover for the owner-driver introduced in 2018. Section 146 only mandates the third-party portion.

Do I need a separate third-party policy for a new car?

A new private car bought today carries a three-year third-party policy at the point of registration. The owner cannot exit the long-term term mid-way and switch to annual cover. After the three-year block ends, annual third-party renewal resumes. New two-wheelers carry a five-year long-term TP block.

Can the insurer refuse a third-party claim?

The insurer cannot refuse the third-party victim's claim outright but can invoke Section 149(2) defences such as driver without licence, vehicle used in breach of policy conditions, or fundamental breach of policy. In such cases the Supreme Court in Swaran Singh (2004) directs a "pay and recover" formula: the insurer pays the victim and recovers from the owner.

Does third-party insurance cover the driver?

The driver is not a "third party" in respect of his own driving. The Compulsory Personal Accident cover, mandatory since 1 January 2019, provides Rs 15 lakh to the owner-driver on death or permanent total disablement. A non-owner driver is covered only if a separate paid-driver clause is added at the standard add-on premium.

Is GST charged on top of the IRDAI tariff?

Yes. Goods and Services Tax at 18 percent applies to motor insurance premiums under HSN 9971. The published IRDAI tariff is GST-exclusive. A Rs 3,416 third-party premium therefore costs Rs 4,031 at the cash counter.