Car Tax Calculation: GST on Cars Explained

Motor Blog
17 Apr 2026
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Contents

How to Calculate GST on Cars?
What is the GST Exemption on Cars After the GST Reform?
Final Word
Frequently Asked Questions

Buying a car in India involves more than just looking at the ex-showroom price. It also includes understanding the sales tax on cars (GST) that significantly impacts the final cost.

The Goods and Services Tax on cars is calculated as a percentage of the base price. Knowing how these components work together can help you estimate the true on-road price. So let’s break down the car tax calculation process step by step.

How to Calculate GST on Cars?

According to The Economic Times, vehicle sales tax in India is largely streamlined into two GST slabs, 5% and 18%. Furthermore, the government has eliminated cess to simplify car tax calculation.

As per the new structure, the GST on small cars has been reduced to 18%. For all the other car segments, the GST stands at 40%.

Are you wondering how car tax calculation works? Let’s take a closer look at the process below.

Also Read: Car Brake Stopping Distance: How to Brake a Car Safely While Driving?

Ex-Showroom Price Determination

The first step to finding GST on cars is to obtain the base price of the car from its dealer or manufacturer's website. Note that this amount does not include the car registration or the insurance.

Identify the Vehicle Category

Once you know the ex-showroom price of your car, you need to find the GST applicability of that specific type of car. Here is the current GST applicability on cars:

Description	GST Applicable (2026)
Small cars, up to 1200 cc and length up to 4000 mm (Petrol, CNG or LPG)	18%
Hybrid Vehicles with up to 1200 cc engines and a length of up to 4000 mm	18%
Hybrid Vehicles up to 1200 cc and length over 4000 mm	40%
Hybrid Vehicles up to 1500 cc and length up to 4000 mm	18%
Hybrid Vehicles up to 1500 cc and length over 4000 mm	40%
Passenger Vehicles	40%
Diesel Motor Vehicles up to 1500cc and 4000mm length	18%
Electric Vehicles (All categories)	5%

For example, this is how a car tax calculation will look for a small car under 1200 cc and up to 4000 mm in length:

Formula:

Final Car Price = Ex-showroom Price + (Ex-showroom price x GST)

Ex-Showroom Price: ₹5,00,000

GST: 18%

Total Tax Payable: ₹90,000

Final Price of the car: ₹5,90,000

Note: New GST rates have been applied since September 2025. These are subject to notification from the GST council.

Understanding how GST impacts your car’s final price is just one part of making a smart purchase. Once you know the total cost, the next step is ensuring that this investment is well-protected against unexpected expenses like accidents, damages or theft.

Explore car insurance online via Bajaj General Insurance for reliable coverage!

What is the GST Exemption on Cars After the GST Reform?

Since the GST reform in 2025, certain exemptions are applicable. They are:

1. The GST on EV cars remains 5%, encouraging clean energy and sustainability adaptation in the automobile sector.

2. For ambulances, the tax has been reduced from 28% to 18%. This initiative acknowledges such vehicles' critical role in healthcare.

Also Read: Himachal Pradesh Road Tax: Check RTO Charges & Taxation

Final Word

GST was introduced to simplify India’s tax structure and its impact on the automobile sector clearly reflects that intent. Today, a more streamlined and transparent system benefits everyone, from manufacturers and dealers to end consumers.

Whether you are buying a small hatchback or a premium SUV, understanding GST makes car tax calculation easier, helping you make confident purchase decisions.

Planning to buy a new car? Don’t forget to protect it with the comprehensive cover from Bajaj General Insurance. Use the car insurance calculator to quickly estimate your premium and find coverage that fits your budget.

Frequently Asked Questions

How to calculate car tax?

From September 2025, car tax calculation only involves the car’s ex-showroom price and the GST rate. Depending on what type of car you own, the tax amount may vary. So, while calculating the tax, multiply the ex-showroom price by the GST rate.

What is the impact of GST on the Indian Automobile Industry?

The GST implementation has eliminated the complex cascading tax system of the past, replacing it with a simple structure. Furthermore, the compensation cess elimination has reduced car taxes, benefiting end consumers.

How much is GST on cars costing below ₹10 lakh?

If a car priced at ₹10 lakh falls under the small car category (up to 1200 cc engine and 4000 mm length), it will attract GST at 18%.

Does the car tax calculation on EV cars differ?

Yes, only 5% GST applies to EV cars, making it a cheaper alternative to conventional vehicles.

Is GST the same for passenger and transport vehicles?

Yes, if the engine power and the length of the car are the same, then the GST is the same for passenger and transport vehicles.

Does GST on cars vary across states in India?

No. Since GST is a centralised tax, it does not vary. It is the same across all states. However, the road taxes and car registration charges vary from one state to another.

**Standard T&C apply

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Disclaimer: The content on this page is generic and shared only for informational and explanatory purposes. It is based on several secondary sources on the internet and is subject to changes. Please consult an expert before making any related decisions.