Invoicing, GST & Billing

GST Margin Scheme for Second-Hand Car Dealers (Explained)

By Bill My Car · Updated 19 June 2026 · 2 min read

For used-car dealers, the GST margin scheme is the single most useful rule to understand. It means you pay GST only on your profit margin, not on the full value of every car you sell. Get it right and your pricing stays competitive and compliant.

This is a plain-language explainer. Tax rules change and edge cases exist, so confirm your specific situation with a tax professional.

The core idea

Under the margin scheme for second-hand goods, a registered dealer pays GST on the margin, not the sale value:

Margin = Selling price minus Purchase price

The reason is simple. A used car has usually already been taxed once when it was new. Taxing the full value again on every resale would stack tax on tax. The margin scheme taxes only the value the dealer adds.

Worked example

If you sold the same car for ₹4,90,000 (a loss), the margin would be negative, so no GST would be payable.

The applicable rate depends on the vehicle category and the prevailing notification, so verify the current rate before you bill.

Conditions to use the scheme

• You must not have claimed input tax credit on the purchase of the vehicle.
• The goods must be sold as they are, or after minor processing that does not change their nature (you are reselling the car, not breaking it for parts).
• You need clean purchase and sale records for each vehicle, because your margin (and therefore your tax) must be provable.

How it appears on the invoice

• A margin-scheme invoice charges GST on the margin only.
• It does not pass on input tax credit.
• It should not show the buyer a full-value tax breakup as if GST applied to the whole price.

For the layout, see the used car invoice format, and for the wider picture read GST on used cars.

Common mistakes

• Charging GST on the full sale price instead of the margin.
• Claiming input tax credit and using the margin scheme at the same time (not allowed).
• Poor records, so the margin cannot be defended in an audit.
• Forgetting that a loss-making sale carries no GST.

Make every margin-scheme bill correct

Working out the margin and the tax by hand on each deal is slow and error-prone. Enter the purchase price, the selling price and the vehicle details once, and let the invoice compute the margin and GST for you. The same data then flows into your sale letter and RTO forms.