GST Basics

Tax liability on composite and mixed supplies

Section 8, CGST Act

Chapter 3 Text as on 2026-09-05 Source CBIC

Straight from CBIC

Official source, not a summary of a summary

Full text included

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Amendment history

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Section 8 fixes how COMPOSITE and MIXED supplies are taxed: a composite supply (naturally bundled) takes the rate of its principal supply; a mixed supply (separate items sold together for a single price) takes the highest rate among them.

What this means in practice

The parts that actually decide cases — the things a practitioner checks first.

1

Composite supply: two or more supplies naturally bundled and supplied together in the ordinary course of business, one of them principal – it takes the principal supply’s rate.

2

Mixed supply: items that could be supplied separately, sold for a single price – the HIGHEST rate in the bundle applies to the whole.

3

Works contract and restaurant supply are composite supplies declared as SERVICES by Schedule II, so they never get split.

4

Freight charged on an invoice for goods usually follows the goods as a composite supply; charging it at the freight rate is a common and expensive error.

Questions people actually ask

Real questions we get on this provision, answered straight.

We sell a machine and charge separately for installation and freight.+

That is normally a composite supply with the machine as the principal supply, so the whole invoice takes the machine’s rate – including the freight and installation lines. Splitting them and charging different rates invites a demand for the difference.

The exact words of the law

462 characters, unedited

Reproduced from the CBIC text. We explain it above — but you should always be able to read it yourself.

Read the full provision+
* Section 8. Tax liability on composite and mixed supplies.- The tax liability on a composite or a mixed supply shall be determined in the following manner, namely:-
(a) a composite supply comprising two or more supplies, one of which is a principal supply, shall be treated as a supply of such principal supply; and
(b) a mixed supply comprising two or more supplies shall be treated as a supply of that particular supply which attracts the highest rate of tax.

What changed, and when

The amendment trail, newest first — because the version that applies to your case depends on the period.

2017-07-01 · Commenced

Provision as originally enacted in the CGST Act, 2017 (Act 12 of 2017) and brought into force w.e.f. 01-07-2017.

Where this comes from

Text reproduced from the Central Board of Indirect Taxes and Customs, as available on 2026-09-05. The explanation and practice notes above are GSTZone’s own, written for this hub. If you spot anything out of date, tell us and we’ll fix it — this hub is checked daily against CBIC.

composite supplymixed supplysection 8principal supply

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Does this apply to your case, or not?

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This hub reproduces the text of the GST Acts and Rules as published by the Central Board of Indirect Taxes and Customs, along with our own plain-language explanations. It is general information, not legal advice for your specific facts — and the law changes. Always check the position for your own case before acting, and talk to us if the amount at stake matters.

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