Under India’s GST, tax liability on a composite or mixed supply under GST depends on how the items in the bundle relate to each other. A composite supply is taxed at the rate of its principal (dominant) component. A mixed supply is taxed at the highest rate found among any of its components. Which label fits your bundle decides the rate, the reporting, and your exposure if the classification is later questioned.
How the Two Rates Actually Work
Section 8 of the CGST Act sets the rule in plain terms. For a composite supply, the entire bundle takes the rate of the principal supply. For a mixed supply, the entire bundle takes the highest rate among all the components in it.1Central Board of Indirect Taxes and Customs. CGST Act 2017 – Tax Liability on Composite and Mixed Supplies
A composite example: a company sells industrial equipment at 18%, together with delivery, installation, and a one-year warranty, all also at 18%. The equipment is the principal supply, so the whole invoice carries 18%. Now change the facts. Say the equipment is taxed at 12% and installation at 18%. The bundle still takes 12%, because the equipment is still the principal supply. The lower rate wins when it belongs to the principal component.
A mixed example: a festive gift box holds sweets at 5%, dry fruits at 12%, and aerated drinks at 28%, sold for one price. The entire box is taxed at 28%. The rule exists precisely to stop businesses from tucking high-tax items into low-tax bundles to shrink the overall bill.
The financial gap is real. Sold separately, only the drinks in that box attract 28%; the sweets and dry fruits attract their own lower rates. Bundled for a single price, 28% applies to everything. A ₹1,000 gift box carries ₹280 in GST as a mixed supply, against roughly ₹130 to ₹150 if each item were invoiced on its own.
Telling Composite From Mixed
A composite supply is a bundle of two or more goods or services that are naturally sold together in the ordinary course of business, where one item is clearly the main reason for the purchase. The CGST Act uses the phrase “naturally bundled and supplied in conjunction with each other.”2Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Definitions The statutory illustration is goods packed, transported, and insured for delivery: the goods are the point, and the packing, transport, and insurance exist only to get them to the buyer.
A mixed supply is different. Two or more items are sold together for a single price, but each has standalone utility and could be bought on its own without losing anything. The Act’s own illustration is a gift package of canned foods, sweets, chocolates, cakes, dry fruits, aerated drinks, and fruit juices sold for one price. Nothing in the box depends on anything else in the box. The Act also specifies that if those same items were sold separately, the transaction would not be a mixed supply.
Two tests do most of the work in practice. First, would a typical buyer expect these items to come together, and do most providers in the industry sell them together? Software with a year of technical support fits that description; software packaged with an unrelated office-supplies kit does not. The GST Council’s own guidance points to consumer expectation and industry practice as the markers of “ordinary course of business.”3GST Council. Composite Supply and Mixed Supply
Second, is there a clear principal item? The CGST Act defines the principal supply as the predominant element, with the other components ancillary to it.2Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Definitions Ask what the customer is actually paying for. Hire a moving company and you want your furniture relocated; the packing, loading, and insurance are incidental, and the transport service is the principal supply. Buy a television and it ships with a wall-mount bracket; the TV drove the purchase. Where two components look roughly equal in value, look at what would cause the customer to cancel the deal. If they would walk away over the design but not over the choice of plant species, the design service is principal.
Where there is no dominant item, no natural link, and the components are bundled mainly for marketing, the supply is mixed.
When Itemized Pricing Changes the Answer
Both statutory definitions turn on items sold “in conjunction” with each other, and the mixed-supply definition specifically requires a single price for the bundle. If a business can list each item on the invoice with its own price, the transaction may not be a mixed supply at all, and each item can be taxed at its own rate. This is not a workaround; it follows directly from the definitions.2Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Definitions
For genuinely composite bundles the pricing question does not arise the same way, because the principal-supply rate applies to the whole even when components are separately identifiable. Itemizing matters most for the borderline mixed bundle sitting next to a high-taxed component.
What Misclassification Costs
Calling a mixed supply “composite” and paying at the principal-supply rate instead of the highest rate produces a shortfall on every invoice, and the effects compound.
- Any tax shortfall attracts interest of up to 18% per annum from the date the tax was originally due, under Section 50 of the CGST Act.4Central Board of Indirect Taxes and Customs. CGST Act 2017 – Section 50 – Interest on Delayed Payment of Tax
- A separate, higher rate of up to 24% per annum applies in a different situation: input tax credit that has been wrongly availed and used. This is not a range for the same offence; the 18% covers late payment, the 24% covers ITC that should not have been claimed. Classification errors can flow into ITC positions that later fail an audit, exposing the taxpayer to that higher rate.4Central Board of Indirect Taxes and Customs. CGST Act 2017 – Section 50 – Interest on Delayed Payment of Tax
- Tax authorities can open recovery proceedings for unpaid tax and add penalties. Where a shortfall involves fraud or willful misstatement, penalties escalate significantly.
- Classification disputes are factually intensive. Proving items are “naturally bundled” means showing industry practice and consumer expectation, not asserting it on a return. Contemporaneous records of how similar businesses package the same offering, and how the bundle is marketed, are what carry the point in an audit.
For genuinely borderline bundles, treating the supply as mixed and applying the highest rate is the safer default. Overpaid tax is recoverable. Underpaid tax arrives with interest and penalties attached.
Time and Place of Supply for Bundled Transactions
Because a composite supply is treated as the principal supply, its time and place of supply follow the principal component. If the principal supply is a good, the time of supply is the earlier of the invoice date or the date of payment.5Central Board of Indirect Taxes and Customs. CGST Act 2017 – Section 12 If the principal supply is a service, the time of supply is the earliest of the invoice date, the date of payment, or the date the service is provided when the invoice is issued late.6Central Board of Indirect Taxes and Customs. CGST Act 2017 – Section 13 Monthly filers report and pay through GSTR-3B, due by the 20th of the following month.7GST Portal. FAQs – Form GSTR-3B
Place of supply also follows the principal component. Where the principal supply is a good involving movement, the place of supply is where the goods are delivered to the recipient. Where no movement is involved, it is the location of the goods at the time of delivery. Where goods are assembled or installed at a site, the place of supply is the installation location.8Central Board of Indirect Taxes and Customs. IGST Act 2017 – Section 10 This determines whether CGST and SGST apply (intra-state) or IGST applies (inter-state).
For a mixed supply the same logic applies, but attached to the component that carries the highest tax rate. Since the whole bundle is treated as a supply of that item, its time-of-supply and place-of-supply rules govern the transaction. Getting this wrong means paying tax to the wrong authority and later facing a demand from the right one.