The Law of Supply under GST: Composite, Mixed, and Deemed Supplies Explained

In any taxation system, the taxable event represents the precise legal occurrence that triggers the statutory liability to pay tax. Under India’s legacy tax framework, the taxable event was fragmented: the manufacture of goods triggered Central Excise, the sale of goods triggered VAT or CST, and the rendering of services triggered Service Tax.

With the enactment of the Central Goods and Services Tax (CGST) Act, 2017, these disparate concepts were eliminated. Today, the singular taxable event across India is Supply.

If an activity does not constitute a “supply” under GST law, no tax liability can arise. Conversely, if an activity qualifies as a supply, tax must be assessed according to its statutory classification, valuation rules, and timing provisions. This guide explores the definition of supply, the critical legal distinction between composite and mixed supplies, transactions treated as supplies without consideration under Schedule I, activities excluded from supply under Schedule III, and the valuation mechanics governing everyday commerce.

1. What Constitutes a “Supply” under GST?

Under Section 7 of the CGST Act, 2017, the scope of supply encompasses all forms of supply of goods or services, or both—such as sale, transfer, barter, exchange, license, rental, lease, or disposal—made or agreed to be made for a consideration by a person in the course or furtherance of business.

flowchart TD
    Activity["Commercial or Economic Activity"]
    Activity --> C1{"Involves Goods or Services?"}
    C1 -- No --> NotSupply["Not a Supply (Money, Securities)"]
    C1 -- Yes --> C2{"For Consideration?"}
    C2 -- Yes --> C3{"In Course / Furtherance of Business?"}
    C3 -- Yes --> TaxableSupply["Taxable Supply (Section 7)"]
    C3 -- No --> NotSupply
    C2 -- No --> Sched1{"Falls under Schedule I?"}
    Sched1 -- Yes --> DeemedSupply["Deemed Supply (Taxable)"]
    Sched1 -- No --> Sched3{"Falls under Schedule III?"}
    Sched3 -- Yes --> NonSupply["Non-Supply (Negative List)"]
    Sched3 -- No --> OutsideGST["Outside GST Net"]

The Six Essential Characteristics of Supply

For a commercial event to be classified as a valid supply by tax authorities, it must satisfy six foundational conditions:

Subject Matter: The supply must involve either goods (any movable property other than money and securities, including actionable claims and growing crops) or services (anything other than goods, money, and securities, including activities relating to the use of money or currency conversion).
Taxability: The transaction must be legally leviable to tax under the provisions of the CGST/SGST/IGST Acts.
Taxable Person: The supply must be initiated by a taxable person (an individual or entity registered under GST or liable to be registered).
Taxable Territory: The transaction must occur within the geographic boundaries of India, including its territorial waters, continental shelf, and exclusive economic zone.
Consideration: The transaction must involve monetary consideration, payment in kind, or reciprocal performance, except for specific deemed supplies enumerated in Schedule I.
Furtherance of Business: The supply must occur in the course of conducting, expanding, or supporting a business activity, vocation, profession, or commercial trade.

2. Composite Supply vs. Mixed Supply: The Classification Test

Modern commercial transactions frequently bundle multiple goods and services together for a single retail package price. To ensure tax neutrality and prevent artificial bundling to lower tax rates, the GST law establishes two strict legal categories: Composite Supply and Mixed Supply.

graph TD
    Bundle["Bundled Commercial Package"]
    Bundle --> Comp{"Naturally Bundled in Ordinary Course of Business?"}
    Comp -- Yes --> Composite["Composite Supply (Sec 2(30))<br/>• Has one Principal Supply<br/>• Taxed at Principal Supply Rate"]
    Comp -- No --> Mixed["Mixed Supply (Sec 2(74))<br/>• Sold together for single price<br/>• Can be supplied independently<br/>• Taxed at HIGHEST applicable rate"]

1. Composite Supply (Section 2(30))

A composite supply consists of two or more individual goods or services that are naturally bundled and provided together in the ordinary course of business, where one item represents the predominant element (the principal supply). Elements other than the principal supply serve merely as supporting, ancillary, or value-adding components.

Tax Treatment: Under Section 8(a), a composite supply is treated entirely as a supply of the principal item and is taxed at the rate applicable to that principal supply.
Classic Example: When a car dealership sells a motor vehicle bundled with mandatory factory registration, warranty coverage, transportation insurance, and a standardized tool kit. The motor vehicle is the principal supply; the registration, insurance, and tool kit cannot be sold independently as the primary contract. The entire bundled value is taxed at the GST rate of the motor vehicle.

2. Mixed Supply (Section 2(74))

A mixed supply is a combination of two or more independent goods or services sold together for a single combined price, where each item can easily be supplied, priced, and consumed independently in the open market.

Tax Treatment: Under Section 8(b), a mixed supply is treated as a supply of that particular constituent item which attracts the highest rate of GST among all bundled items.
Classic Example: A plant nursery sells a decorative holiday basket containing fresh cut flowers, gardening shears, gardening gloves, and professional pruning services for a single consolidated price of ₹3,000. Because shears, gloves, and services can be purchased independently anywhere, this is a mixed supply.

Practical Case Study: Raju’s Confectionery & Gift Hamper

Consider this real-world scenario from commercial practice:

The Case: Raju, a registered supplier based in Delhi, supplies 20,000 gift packages at ₹30 per package to GEMS Gift Shop in Kerala. Each package contains:

2 Chocolates (Standard GST Rate: 18%)

2 Fruit juice bottles (Standard GST Rate: 12%)

1 Packet of toy balloons (Standard GST Rate: 5%)

Legal Analysis: Because chocolates, juice bottles, and toy balloons can all be purchased and consumed separately without functional interdependence, this bundle constitutes a Mixed Supply.

Tax Calculation:

Total Transaction Value: $20,000 \times \text{₹}30 = \text{₹}600,000$.

Highest Applicable Rate among bundled goods: 18% (Chocolate).

Total GST Payable: $\text{₹}600,000 \times 18% = \text{₹}108,000$.

If this were an inter-state supply from Delhi to Kerala, the entire ₹108,000 would be billed and remitted as IGST.

3. Supply Without Consideration: Schedule I Deemed Supplies

As a foundational rule, a transaction requires consideration to constitute a supply. However, Section 7(1)(c) read with Schedule I outlines four critical commercial scenarios where transactions are legally deemed supplies even when made without consideration:

Schedule I Category	Statutory Criteria & Operational Mechanics
1. Permanent Disposal of Business Assets	Any permanent transfer or disposal of business assets where Input Tax Credit (ITC) was originally availed on that asset. Example: Arun purchases an office laptop for ₹80,000, claims ITC, and later gifts the used laptop to a personal friend for free. This triggers GST on the open market value.
2. Related Party & Inter-Branch Supplies	Supplies of goods or services between related persons, distinct persons, or between a parent company and its subsidiary when made in the course or furtherance of business. Transactions between distinct branches holding separate GSTINs are taxable even if no invoice value is transferred.
3. Principal-Agent Transactions	The supply of goods by a principal to their authorized agent where the agent undertakes to supply such goods on behalf of the principal, or the receipt of goods by an agent on behalf of the principal.
4. Importation of Services from Related Entities	The import of professional or technical services by a person from a related person or an overseas establishment outside India in the course or furtherance of business.

The Corporate Gift Threshold: The ₹50,000 Employee Rule

Under Schedule I, employers and employees are legally classified as “related persons”. To prevent harassment over small corporate perquisites while capturing substantial bonuses, the law establishes a clear ceiling:

Gifts provided by an employer to an employee valued up to ₹50,000 in a financial year are not treated as a supply and attract zero GST.
When employer gifts exceed ₹50,000 in aggregate value in a financial year, the excess amount constitutes a taxable supply.

4. Non-Supplies: Schedule III (The Negative List)

Section 7(2) read with Schedule III specifies activities that are treated neither as a supply of goods nor as a supply of services. These activities sit entirely outside the charge of GST:

Employment Services: Services rendered by an employee to an employer during or in relation to their contract of employment.
Casual Labor: Services provided by casual daily-wage workers directly to an employer.
Judicial & Tribunal Functions: Services rendered by any court or tribunal established under any law for the time being in force (including the Supreme Court, High Courts, and District Courts).
Constitutional & Statutory Functions: Duties performed by Members of Parliament (MPs), Members of State Legislative Assemblies (MLAs), members of Panchayats, Municipalities, or other local statutory authorities.
Sale of Land & Completed Buildings: The sale of land and, subject to Schedule II, the sale of completed buildings where the entire consideration is received after the issuance of a Completion Certificate or after first occupation. (Under-construction buildings remain taxable).
Actionable Claims: Actionable claims other than lottery, betting, and online gambling (such as insurance claims, unsecured debts, or claims for arrears of rent).
Alcoholic Liquor for Human Consumption: Specifically carved out by constitutional mandate under Article 366(12A).

5. Valuation, Time, and Place of Supply

Establishing that a supply has occurred is only the first step. Taxpayers must calculate the taxable base value, identify the precise date when tax liability attaches, and determine the geographic jurisdiction.

flowchart LR
    V["Valuation (Sec 15)<br/>Transaction Value<br/>+ Inclusions<br/>- Exclusions"] --> TaxCalc["Tax Calculation"]
    T["Time of Supply (Sec 12/13)<br/>Earlier of Invoice Date, Due Date, or Payment"] --> DueDate["Filing & Remittance Window"]
    P["Place of Supply (IGST Act)<br/>Determines Intra-State vs Inter-State"] --> TaxType["Determines CGST+SGST or IGST"]

Statutory Valuation Rules (Section 15)

The value of a supply is based on the transaction value—the price actually paid or payable for goods and services between non-related parties where price is the sole consideration.

Statutory Inclusions (Add to Base Price):

Any non-GST taxes, duties, cesses, and fees levied under any other enactment (e.g., municipal taxes).
Incidental expenses incurred by the supplier in relation to the sale, including packing, commission, and delivery inspection.
Any amount that the supplier was legally liable to pay but was instead paid by the recipient on the supplier’s behalf.
Subsidies directly linked to the price of the supply (excluding Central and State Government subsidies).
Interest, late fees, or penalty charges collected for delayed payment of consideration.

Statutory Exclusions (Deduct from Base Price):

Pre-Supply Discounts: Any trade discount offered before or at the time of supply that is duly recorded on the face of the tax invoice.
Post-Supply Discounts: Cash discounts or volume rebates offered after supply, provided they were agreed upon prior to delivery via a formal contract and the recipient reverses corresponding Input Tax Credit.

Time of Supply Mechanics

The Time of Supply dictates the tax period in which a transaction must be reported in monthly returns (Form GSTR-1 and GSTR-3B):

Time of Supply for Goods: The earlier of the date of issue of the tax invoice (or the statutory deadline for issuing the invoice under Section 31) or the date when payment is credited. (Under current notification relief, advance payments received for goods are exempt from GST at the advance stage for normal taxpayers).
Time of Supply for Services: The earlier of the date of invoice issuance (if issued within 30 days of service completion), the date of provision of services (if the invoice is delayed beyond 30 days), or the date on which payment is received.

Place of Supply Determinations

The Place of Supply determines whether a transaction attracts CGST + SGST (intra-state) or IGST (inter-state):

Goods Involving Movement: The location of the goods at the time delivery terminates for delivery to the recipient.
Goods Not Involving Movement: The location of the goods at the time of delivery to the recipient.
Services to Registered Persons (B2B): The location of the registered recipient.
Services to Unregistered Persons (B2C Passenger Transport): The place where the passenger embarks on the continuous journey (e.g., if an unregistered passenger books transport from Bangalore to Hampi, Bangalore is the place of supply).

6. Key Takeaways & Operational Summary

Supply as the Sole Taxable Event: Under GST, traditional concepts like manufacturing, sales, and service provision are replaced by “Supply”.
Composite Supplies Follow the Principal Element: Naturally bundled packages are taxed at the GST rate of the principal supply.
Mixed Supplies Trigger the Highest Rate: Artificially bundled packages sold for a single price attract the highest GST rate among all bundled items.
Schedule I Deemed Supplies: Transactions between related entities, disposal of business assets with ITC, and employer gifts exceeding ₹50,000 attract GST even when no consideration changes hands.
Schedule III Negative List: Employment wages, judicial functions, completed real estate, and actionable claims are excluded from the scope of GST.

7. Frequently Asked Questions (FAQ)

What is the primary difference between a composite supply and a mixed supply?

A composite supply consists of items naturally bundled in the ordinary course of business with a clear principal supply (taxed at the principal item’s rate). A mixed supply consists of independent items artificially bundled for a single price (taxed at the highest rate among all items).

If a company gives a ₹45,000 festival gift to an employee, is it taxable under GST?

No. Under Schedule I, gifts provided by an employer to an employee valued up to ₹50,000 in a financial year are exempt from GST. If the gift value exceeds ₹50,000, the excess is treated as a supply.

How are trade discounts and cash discounts treated in GST valuation?

Trade discounts given before or at the time of supply and recorded on the tax invoice are deducted directly from the taxable value. Post-supply cash discounts can only be deducted if established by prior agreement and supported by credit notes and corresponding ITC reversal by the buyer.

Why is an under-construction apartment subject to GST, but a completed building is not?

Under Schedule III, the sale of completed buildings is exempt from GST if the entire consideration is received after the issuance of a Completion Certificate. Construction services for an under-construction property are classified as a supply of services under Schedule II.