Car on-road price: how ₹12 lakh becomes ₹13.96 lakh

The price you will not pay

The price on a car's brochure is the ex-showroom price. It already includes GST and the dealer's margin, and it is the number carmakers such as Maruti Suzuki, Tata Motors Passenger Vehicles, Mahindra & Mahindra and Hyundai advertise. You never pay it. What you pay is the on-road price, which adds four or five lines, and the biggest of them depends on the state you register the car in.

This post builds one on-road price from scratch with the car on-road price calculator, using its built-in assumptions. The car is illustrative: ₹12 lakh ex-showroom, petrol, registered in Maharashtra. The road tax rates are the calculator's indicative 2026 figures, not an official schedule, so check yours against the dealer's quotation.

Line by line

Road tax is three-quarters of the gap. Insurance is the next biggest line, and the 3% is only an estimate: your premium depends on the model, the city and your no-claim bonus. Get the dealer's insurance quote and at least one other before you sign. If you want to see how much of the ex-showroom price is GST, the GST calculator separates it.

Road tax: the line that depends on where you live

Here is the same ₹12 lakh petrol car in eight states, at the rates the calculator pre-fills:

The spread between Gujarat and Karnataka is ₹1.54 lakh for an identical car. Fuel moves it too. In Maharashtra the calculator puts diesel at 14.28%, which makes the same-priced car ₹14,20,560 on the road; CNG at 9.18%, ₹13,59,360; and an electric car at 0%, ₹12,49,200. The zero for electric cars is right in most states but not all, and several exemptions run only until a notified date.

Two cautions. Some states charge road tax on the pre-GST invoice value rather than ex-showroom, and individual RTOs differ, which is why the calculator lets you overwrite the rate. And registering in a cheaper state is not a workaround: road tax follows where the car is normally kept. The Parivahan portal has the official registration information.

The ₹10 lakh cliff

In the calculator's model, a state's slab rate applies to the whole price, not just the part above the threshold, and TCS also starts above ₹10 lakh. Both bite at the same line. In Maharashtra:

• ₹10,00,000 ex-showroom: road tax 11.22%, no TCS, on-road ₹11,43,400.
• ₹10,05,000 ex-showroom: road tax 12.24%, TCS ₹10,050, on-road ₹11,69,412.

A variant ₹5,000 dearer on the sticker costs ₹26,012 more on the road. Take out the TCS, which comes back, and ₹15,962 of that is permanent. When two variants sit either side of a slab, compare their on-road prices, not their ex-showroom prices.

TCS: the line that comes back

The 1% tax collected at source on a car above ₹10 lakh is not a charge on the car. The dealer deposits it against your PAN; it shows up in your Form 26AS and AIS, and you claim it against your tax when you file, with any excess refunded. You can check it in the income tax calculator as tax already paid, and the Income Tax Department's portal shows it once the dealer has filed.

It is still cash you hand over on delivery day, though, and if it goes into the loan you pay interest on money that will be returned to you. On ₹12,000 over five years at an assumed 9%, that is about ₹2,900 of interest. Small, but there is no reason to pay it.

Finance the on-road price, not the sticker

Say you put down ₹2 lakh and borrow the rest for five years at an assumed 9% a year (a placeholder, not a quote). The loan is ₹11,96,080 and the EMI ₹24,829, with ₹2.94 lakh of interest over the term. Had you budgeted on the ex-showroom price, you would have planned for a ₹10 lakh loan and an EMI of ₹20,758, which is ₹4,071 a month short.

Accessories do the same quietly. Add a ₹40,000 pack to the invoice and the loan becomes ₹12.36 lakh, the EMI ₹25,659, and the pack costs about ₹9,800 more in interest. The car loan EMI calculator shows any combination, how an EMI actually works explains why the interest is front-loaded, and if a dealer quotes a flat rate, the flat vs reducing rate calculator converts it. The rate you are offered also depends on your credit file; see how your CIBIL score is calculated.

The rule of thumb

Budget for a fifth over the ex-showroom price, then check your state. For a ₹12 lakh petrol car the calculator's figures run from about 10% over ex-showroom in Gujarat to 23% in Karnataka, with Maharashtra at 16%. Use that on-road figure everywhere a car budget asks for a price: for the down payment, the loan and the 20/4/10 car rule, whose 20% down is meant to be 20% of what you actually pay.

Pitfalls

1. Comparing variants on ex-showroom price. Near a slab boundary the on-road gap can be several times the sticker gap.
2. Unitemised quotations. Ask for every line separately. Accessory packs, extended warranties and "handling" or "logistics" charges are not the same as road tax; ask what each one is for and whether it is optional.
3. Financing what you could pay in cash. TCS and accessories are the easiest lines to keep out of the loan.
4. Draining the emergency fund for the down payment. The emergency fund calculator gives a target; if the car needs that money, it is too expensive this year.
5. Leaving the down payment in a savings account for months. If delivery is some weeks away, a liquid fund is the usual parking place for money with a fixed date.

This post is for education only and is not financial advice. Road tax, insurance and loan rates here are the calculator's indicative assumptions; rates are set by state notification and change, so check your quotation and your state's transport department.