GST on Used Car Sale in India: The 18% Margin Rule Explained

If you are an ordinary person selling your own used car, you pay no GST at all. GST on a used car only kicks in when a GST registered business or dealer sells it, and even then the 18% is charged only on the margin (the profit), not on the full sale price. And when a dealer sells a car for less than it cost, even that sale carries no GST.

Numbers make this clearer than any rule. Here are three common situations, side by side.

Notice the pattern. The only case that carries any GST is (b), where a registered dealer made a profit. And even there, the ₹18,000 is 18% of the ₹1,00,000 margin, not 18% of the ₹6,00,000 sale price.

The whole thing turns on one question: is the sale part of a business?

• You selling your own car: no GST. When you sell your personal car to a friend, a stranger, or a dealer, you are not making a supply in the course of business. GST does not apply, and you do not need any GST registration to sell it. This is the single most important point for most people.
• A GST registered dealer or business: 18% on the margin. A used-car dealer, or any business selling a vehicle it had used, charges 18% GST, but only on the margin. This rate came in on 16 January 2025, when the tax on old and used vehicles rose from 12% to 18%.
• The margin scheme needs one condition: no input tax credit was claimed on the car. If the business had earlier claimed input tax credit on the vehicle, the margin scheme does not apply and the normal rules kick in. Most cars a business simply used do not carry input tax credit, so the margin scheme is the usual path.

The margin is just what the seller gained. Work it out in three steps.

1. Find your cost. If you never claimed depreciation, use the price you paid for the car. If you claimed depreciation on it under the Income-tax Act, because it was a business asset, use its written-down value instead.
2. Subtract that cost from the sale price. The answer is your margin. This valuation sits in Rule 32(5) of the CGST Rules, 2017.
3. Apply the rate. If the margin is zero or negative, there is no GST. If it is positive, GST is 18% of the margin only.

The September 2025 GST 2.0 overhaul reshaped many slabs, but it left the used-vehicle margin rule alone: old and used cars still carry 18% on the margin. You can read more about the new slabs in our guide to GST 2.0 and the 5, 18 and 40 percent slabs.

• Myth: the 18% is on the whole sale price. It is not. GST is only on the margin. On a car sold for ₹6,00,000 that had cost ₹5,00,000, the tax is 18% of ₹1,00,000, which is ₹18,000, not 18% of ₹6,00,000.
• Myth: every used-car sale attracts GST. No. A private individual selling a personal car pays nothing.
• Myth: selling at a loss still means GST. No. A negative margin is ignored, so a loss-making sale carries zero GST.
• Myth: the buyer must pay this GST on top. In a dealer sale, the registered seller accounts for the GST on the margin. As a private buyer of a used car, you are not filing any GST.
• Myth: you need GST registration to sell your own car. You do not. Registration matters only for people who sell in the course of business.

No. Selling your personal car is not a supply made in the course of business, so no GST applies, whether you sell to a friend, a stranger, or a dealer. You also do not need GST registration for it.

For a GST registered dealer or business, it is 18% of the margin (the profit), not 18% of the full price. This 18% rate has applied since 16 January 2025, and it was left unchanged by the September 2025 GST 2.0 reform.

Only the profit, called the margin. The margin is the sale price minus the purchase price, or minus the written-down value where depreciation was claimed. If the seller makes no profit, there is no GST.

It took effect on 16 January 2025 through Notification No. 04/2025-Central Tax (Rate), which amended the earlier Notification No. 8/2018-Central Tax (Rate). The change followed the 55th GST Council meeting held on 21 December 2024.

Then the margin is negative and it is ignored, so there is no GST at all. GST on used cars is never charged on a loss.

Yes. From 16 January 2025 the rate was unified at 18% for all old and used vehicles, including electric vehicles and smaller cars that were earlier taxed at 12%. It still applies only to sales by registered businesses, and only on the margin.

Use the written-down value of the car, not the original price you paid. Your margin is the sale price minus that written-down value. This follows Rule 32(5) of the CGST Rules, 2017.

No. GST registration is for people and businesses that supply goods or services in the course of business. A one-off sale of your own car does not need it. If you do run a business and want to understand registration, see our guide on how to apply for GST registration.

Tax is only one part of selling a car. Two practical jobs matter more for most sellers.

• If you took a loan on the car, get the hypothecation removed from the registration certificate after you close the loan, or the buyer inherits a lien. Our step-by-step guide covers removing hypothecation from your RC on Parivahan.
• Keep your sale paperwork. Even though a private sale carries no GST, a signed sale letter and the RTO transfer forms protect you from a buyer running up fines in your name later.

Selling a car can drag you into road-tax refunds, transfer delays, or a hypothecation entry that will not clear. If an RTO or office stalls, a Right to Information request is your lever to get a written answer. The RTI Playbook shows you how to write one that actually gets a reply.

• Notification No. 04/2025-Central Tax (Rate) dated 16 January 2025, which amended Notification No. 8/2018-Central Tax (Rate) to set 18% GST on old and used vehicles.
• The 55th GST Council meeting, 21 December 2024, which recommended the unified rate.
• Rule 32(5) of the CGST Rules, 2017, the margin scheme for second-hand goods.
• Central Board of Indirect Taxes and Customs: https://cbic-gst.gov.in