Composite Supply vs Mixed Supply: Practical GST Guide with Examples

Composite Supply vs Mixed Supply under GST: A Complete Practical Guide with Examples – (Sections 2(30), 2(74) & Section 8 of the CGST Act, 2017)

Introduction

One of the most important aspects of the Goods and Services Tax (GST) regime is determining the correct nature of a supply. In many business transactions, multiple goods or services are supplied together under a single invoice. The tax treatment of such transactions depends on whether they qualify as a Composite Supply or a Mixed Supply.

Although these terms may appear similar, they have entirely different GST implications. A wrong classification can result in additional tax liability, interest, penalties, and unnecessary litigation.

The concepts are governed by:

• Section 2(30)– Definition of Composite Supply
• Section 2(74)– Definition of Mixed Supply
• Section 8– Tax liability on Composite and Mixed Supplies

This article explains these provisions in simple language with practical business examples.

What is Composite Supply?

Section 2(30) of the CGST Act defines a Composite Supply as:

A supply consisting of two or more taxable supplies of goods or services, or both, which are naturally bundled and supplied together in the ordinary course of business, where one of them is the principal supply.

In simple terms, when different goods or services are normally supplied together as part of a single transaction, they are treated as a Composite Supply.

The entire transaction is taxed according to the GST rate applicable to the Principal Supply.

Key Features of Composite Supply

• Two or more taxable supplies are provided together.
• The supplies are naturally bundled in the ordinary course of business.
• One supply is the principal supply.
• Customers generally expect these supplies together.
• GST is charged according to the rate applicable to the principal supply.

What is Principal Supply?

As per Section 2(90) of the CGST Act, Principal Supply means the predominant element of a composite supply to which the other supplies are ancillary.

In simple words, it is the main reason why the customer enters into the transaction.

Example

A customer purchases an air conditioner along with installation services.

• Air Conditioner – Main Supply
• Installation – Ancillary Service

Since the customer’s primary intention is to buy the air conditioner, the air conditioner is the Principal Supply.

Practical Examples of Composite Supply

Example 1 – Air Conditioner with Installation

The installation service is naturally connected with the sale of the air conditioner.

Therefore, the transaction is a Composite Supply.

If the GST rate on the air conditioner is 28%, GST will be charged at 28% on the entire invoice value of ₹52,000.

Example 2 – Mobile Phone with Delivery

A customer purchases a mobile phone for ₹30,000 and pays ₹500 for delivery.

Since delivery is incidental to the sale of the mobile phone, the transaction is a Composite Supply.

GST will be charged at the rate applicable to the mobile phone on the total amount of ₹30,500.

Example 3 – Construction Contract

A contractor undertakes construction work involving:

• Building materials
• Labour
• Design services
• Installation

Under GST law, such contracts are generally treated as Works Contract Services.

The entire contract value is taxed according to the GST rate applicable to Works Contract Services.

Example 4 – Goods Transport Agency (GTA)

A Goods Transport Agency may charge for:

• Transportation
• Loading
• Unloading
• Documentation
• Transit insurance

Where these services are naturally connected with transportation, they form a Composite Supply.

The tax treatment will depend on whether GST is payable under the Forward Charge or Reverse Charge mechanism.

What is Mixed Supply?

Section 2(74) of the CGST Act defines Mixed Supply as:

Two or more individual supplies of goods or services, or any combination thereof, supplied together for a single price, where such supply does not constitute a Composite Supply.

In simple words, the items are sold together only as a package and are not naturally bundled. Each item can normally be purchased separately.

In such cases, the entire package is taxed at the highest GST rate applicable to any item in the package.

Key Features of Mixed Supply

• Two or more independent goods or services are supplied together.
• A single consolidated price is charged.
• The supplies are not naturally bundled.
• Each item can ordinarily be sold separately.
• The highest GST rate applies to the entire package.

Practical Examples of Mixed Supply

Example 1 – Festival Gift Hamper

A gift hamper contains:

• Dry Fruits
• Chocolates
• Perfume
• Juice

The hamper is sold for a single price of ₹5,000.

Since these items are independent products and are not naturally supplied together, the transaction is a Mixed Supply.

If perfume attracts the highest GST rate of 28%, GST at 28% will apply to the entire hamper.

Example 2 – Supermarket Combo Offer

A supermarket sells the following items as one package:

• Soap
• Shampoo
• Biscuits
• Soft Drink

These products are unrelated and can be purchased separately.

Therefore, the package qualifies as a Mixed Supply, and the highest GST rate among the items will apply to the entire package.

Tax Liability under Section 8

Section 8 of the CGST Act provides the method for determining GST liability.

Composite Supply

The entire transaction is taxed according to the GST rate applicable to the Principal Supply.

Mixed Supply

The entire package is taxed at the highest GST rate applicable to any individual item in the package.

Practical Invoice Illustration

Case 1 – Composite Supply

Where delivery and installation are naturally connected with the supply of the laptop, the transaction is a Composite Supply.

If the laptop attracts GST at 18%, GST at 18% will apply to the entire invoice value of ₹80,000.

Case 2 – Mixed Supply

A gift basket contains:

• Chocolate
• Perfume
• Coffee Mug
• Dry Fruits

The basket is sold for ₹80,000 as a single package.

These items are independent products and are not naturally bundled.

If perfume attracts GST at 28%, the entire basket will be taxed at 28%.

Composite Supply vs Mixed Supply – Quick Comparison

Practical Tips for Businesses

Businesses should keep the following points in mind:

• Correctly classify every bundled transaction.
• Identify the Principal Supply before determining GST.
• Draft contracts and invoices carefully.
• Avoid artificial bundling merely to obtain a lower GST rate.
• Refer to Section 8 before calculating GST liability.
• Maintain proper agreements and supporting documentation.

Common Mistakes

Many taxpayers make avoidable errors such as:

• Treating a Composite Supply as a Mixed Supply.
• Failing to identify the Principal Supply.
• Incorrectly clubbing independent supplies under a single invoice.
• Applying a lower GST rate where the highest rate is legally applicable.
• Misinterpreting GST provisions relating to Works Contracts and GTA services.

Conclusion

Correct classification between Composite Supply and Mixed Supply is essential for GST compliance. While a Composite Supply is taxed according to the Principal Supply, a Mixed Supply is taxed at the highest GST rate applicable to any item in the package.

An incorrect classification can lead to tax demands, interest, penalties, and prolonged disputes with the tax authorities. Businesses, accountants, GST practitioners, and tax professionals should therefore carefully analyse the nature of every transaction before determining its GST treatment.

A clear understanding of Sections 2(30), 2(74), and Section 8 of the CGST Act not only ensures compliance but also helps businesses avoid unnecessary litigation and financial exposure.