GST Classification of Transport Tanks Mounted on Chassis
The Gujarat Authority for Advance Ruling decided that transport tanks mounted on chassis are classified as tanks, not motor vehicles.
- Ruling
- GUJ/GAAR/R/2019/04 dated 28.02.2019
- Authority
- Authority for Advance Ruling
This page was written by Patron Accounting’s AI from the official release and reviewed before publishing. It explains the document in plain language. It is not the document itself. Where this page and the original differ, the original governs.
The short version
- Inox India Product Ltd asked how to classify mounted transport tanks.
- The authority ruled these tanks fall under HSN Heading 7311.
- The tanks remain containers because they are easily removed from the chassis.
In short
The company asked whether mounting a transport tank onto a customer's chassis makes the final product a motor vehicle under GST or simply a tank. The authority looked at whether the tank loses its identity once attached to the vehicle.
What has changed
How it worked before
Under old excise laws, mounting a body on a chassis was often treated as manufacturing a motor vehicle, leading many to assume the same rule applied under GST.
What has changed
The authority clarified that GST law lacks the old excise rule that automatically turned mounted bodies into motor vehicles. Because the tank is easily removed and functions as a container, it is classified as a tank under HSN 7311 rather than a vehicle under HSN 8704.
Who this affects
Manufacturers of demountable equipment or storage tanks who mount their products onto customer-provided vehicle chassis.
An example
A company manufactures specialized liquid storage tanks that are bolted onto truck chassis. They worry that mounting the tank makes it a motor vehicle, which carries a different tax rate. Based on this ruling, if their tanks are easily demountable and function independently as containers, they can likely classify them as tanks under HSN 7311.
What you should do
This ruling only applies to the business that asked for it. If you have a similar setup, use this logic to support your classification, but consult your tax advisor to confirm it applies to your specific product design.
If you do nothing
If you classify your goods incorrectly, you risk paying the wrong GST rate, which can lead to tax demands, interest, and penalties. A tax officer may disagree with your classification if your product is permanently attached or integrated into the vehicle's function. Relying on a ruling that does not apply to your specific facts is not a valid legal defense.
The terms explained
- HSN
- Harmonized System of Nomenclature, a code used to classify goods for tax purposes.
- Chassis
- The base frame of a motor vehicle to which other parts are attached.
- Demountable
- Equipment that can be easily removed or detached from a base without damaging the structure.
The ruling in detail
Authority for Advance Ruling
M/s. Inox India Pvt. Ltd.
GUJ/GAAR/R/2019/04 dated 28.02.2019 · Gujarat
Questions before the authority
- Whether supply of transport tank by mounting the same on chassis amount to supply of ‘tank’ classifiable under Heading 7311 or supply of ‘motor vehicle’ classifiable under Heading 8704 in the GST regime?
Facts
The applicant manufactures transport tanks used for gas or liquids and supplies them by mounting them onto chassis provided by customers. The mounting process involves bolting the tank to the chassis, which allows for easy removal. The applicant sought a ruling on whether this activity constitutes the supply of a tank under HSN 7311 or a motor vehicle under HSN 8704.
Ruling
| Question | What the authority ruled |
|---|---|
| Transport tank mounted on chassis | Heading 7311 Classified as a container for compressed or liquefied gas |
The authority ruled that the transport tank mounted on a customer's chassis is classifiable under Heading 7311. It determined that the tank retains its identity as a container and does not become a motor vehicle.
Reasoning
The authority noted that the GST regime does not contain a provision analogous to the erstwhile Central Excise Chapter Note 5 of Chapter 87, which previously deemed the mounting of a body on a chassis as the manufacture of a motor vehicle. Consequently, the product must be classified based on its own characteristics rather than the mounting process. Since the tank is easily demountable and functions primarily as a storage container, it falls under Heading 7311. The ruling relied on the General Rules for the Interpretation of the First Schedule to the Customs Tariff Act, 1975.
Provisions relied on
- Section 97(2) of CGST/GGST Act, 2017
- Notification No. 1/2017-Central Tax (Rate) dated 28.06.2017
- Customs Tariff Act, 1975
- General Rules for the Interpretation of the First Schedule to the Customs Tariff Act, 1975
For the practitioner
This ruling is highly beneficial for manufacturers of **demountable equipment** who previously faced classification as motor vehicles under the excise regime. It confirms that in the absence of specific deeming provisions in the GST law, the **essential character** of the goods prevails over the method of attachment to a vehicle. Practitioners should note that this decision hinges on the ease of demounting and the independent utility of the tank.
Source
This is a summary prepared from the published order, which is a scanned document. It is a reading aid and not the authority: where the two differ, the order governs. Verify every provision against the original before relying on it.
Original order: https://www.gstcouncil.gov.in/sites/default/files/AAR/guj_04-2019_dtd.28.02.19-inox_india_20-2017.pdf
Legibility of the scan, as read: high.
Prepared 20-10-2026.
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