Composite supply versus mixed supply: the test, and the tax
Two definitions, one question, and a rate difference that can double a bill.
A composite supply under Section 2(30) is a supply of two or more taxable supplies naturally bundled and supplied in conjunction in the ordinary course of business, one of which is a principal supply, and it is taxed at the rate applicable to the principal supply. A mixed supply under Section 2(74) is a combination of supplies made for a single price which does not constitute a composite supply, and it is taxed at the highest rate applicable to any of the constituents. The distinguishing question is whether the bundle is natural.
Applying the definitions
First ask whether the elements are naturally bundled in the ordinary course of business. The test is commercial practice, not the contract's drafting. Air travel with a meal, hotel accommodation with breakfast, and works contracts with materials are natural bundles.
Second identify the principal supply, defined in Section 2(90) as the predominant element to which the other supplies are ancillary. The identification must be reasoned, not asserted.
If there is no natural bundle and there is a single price, the supply is mixed and the highest rate applies. A hamper of chocolate, aerated drinks and dry fruit is the classic example.
If the elements are separately priced and separately supplied, the supply may simply be two supplies, each taxed on its own footing. That is often the best structuring answer.
Where it matters most
Works contracts and turnkey projects, where the rate on the composite supply differs from the rate on the goods supplied.
Hospitality, where accommodation, food, transport and event services are bundled at a single tariff.
Equipment supplied with installation, commissioning, training and warranty, where the installation may be ancillary or may be an independent supply.
Annual maintenance contracts covering both goods and services.
Promotional bundles and combination packs in consumer goods, where the mixed supply rate can be materially higher.
Structuring, and its limits
Separate pricing helps but does not decide. Where the elements are naturally bundled, separate pricing does not convert one supply into two, and the department will apply the composite rate.
Separate contracts help more, where they reflect a genuine commercial separation with distinct scopes, distinct deliverables and distinct acceptance.
What fails is a paper split of an integrated contract, particularly in works contracts and EPC arrangements, where the courts have looked at the substance of the transaction.
The decision should be documented at the time of contracting, with the reasoning on natural bundling and principal supply. That note is what answers a notice three years later.
Authorities relied on
A works contract is a composite contract and cannot be dissected to tax the service element without statutory authority; the substance of an indivisible contract governs.
Clarified the treatment of certain bundled supplies, including servicing of vehicles involving both goods and services, and the approach to identifying separate supplies.
What to do on Monday
Document the natural bundling and principal supply analysis at the contracting stage for every bundled offering.
Review promotional bundles for mixed supply exposure before launch, because the highest rate applies to the whole price.
Where separation is intended, separate the scope and the acceptance, not merely the price.
Reconcile the rate applied on bundles across products annually; inconsistency is the first audit finding.
This page states the general position. A reader with a specific question on their own facts may write to the GST practice at AMLEGALS.
Write to the GST practiceQuestions we are asked on this
Does separate pricing make two supplies?
Not by itself. Where the bundle is natural, the composite rate applies notwithstanding separate line items.
How do we identify the principal supply?
By the predominant element to which the others are ancillary, reasoned on value, purpose and commercial understanding. Record the reasoning.
Is a mixed supply always taxed at the highest rate?
Yes, at the highest rate applicable to any constituent, which is why deliberate bundling of differently rated goods is expensive.
Are freight and insurance part of the supply of goods?
Where charged in relation to the supply, they generally form part of the value under Section 15, which is a valuation question rather than a composite supply question.
Can two separate contracts survive scrutiny?
Where they reflect a genuine commercial separation with distinct scope, deliverables and acceptance, yes. A paper split of an integrated scope does not.
In this cluster
- GST 2.0: two slabs did not end classification litigation, they moved the battle line
- Rate change transition: time of supply, credit notes and stock in hand
- Classification disputes under GST: the principles the courts apply
- Westinghouse Saxby: the sole or principal use test and the end of easy classification
- HSN, common parlance and the General Rules of Interpretation
- Principal supply in bundled contracts: getting the rate right
- Food, beverages and the restaurant service rate maze
- Textiles and apparel: the rate structure and the disputes it produces
- Pharmaceuticals and medical devices: the concession and its boundaries
- Automobiles and auto components: the rate bands and the component question
GST Insights is published by AMLEGALS for general information. Law stated as on 3 September 2026. Not advice on any particular set of facts; not an advertisement or a solicitation under Rule 36 of the Bar Council of India Rules. Readers with a question on their own facts may write to the GST practice of their own accord.