Indirect Tax Laws · Electronic Commerce Transactions

E-Commerce Operator and Supplier Definitions under CGST Act (CA Final)

Updated 5 October 2026 · Fact-checked

An electronic commerce operator is any person who owns, operates or manages a digital or electronic platform for electronic commerce. A supplier is the person who actually supplies the goods or services, including an agent acting for them. To solve questions, identify who owns the platform, who makes the supply, and who is registered, then apply the relevant provision.

Understand E-Commerce Operator and Supplier Definitions

Start with the picture of a marketplace app. Three parties sit around it: the platform owner, the seller who lists goods or services, and the buyer. GST law gives each a different label and different duties. Most exam marks are lost by mixing these labels.

Electronic commerce means the supply of goods or services or both, including digital products, over a digital or electronic network (Section 2(44)). The key test is that the supply happens over a network. A shop with a website that only shows its address is not doing e-commerce supply.

Electronic commerce operator (ECO) means any person who owns, operates or manages a digital or electronic facility or platform for electronic commerce (Section 2(45)). Owning, operating or managing are alternatives. One of them is enough. The ECO need not own the goods sold. The definition is wide and does not itself require that third-party sellers use the platform. Marketplaces, app-based aggregators and booking portals are typical ECOs.

Supplier means the person supplying the goods or services, and includes an agent acting as such on behalf of that supplier (Section 2(105)). On a marketplace, the seller is the supplier. The ECO is not the supplier just because it hosts the platform. But if the same entity also sells its own goods or services on its platform, it is an ECO for the platform role and a supplier for its own sales. Treat the two roles separately.

A registered person is one who is registered under Section 25 of the CGST Act, but not a person having a unique identity number (Section 2(94)). This matters because the platform's duties depend on whether the seller is registered. The ECO's duties of tax collection at source and, for notified services, payment of tax itself are linked to these definitions. By the plain definition, a person who owns or operates a platform is an ECO. In an exam answer, a hotel that sells only its own rooms on its own website is usually treated as a supplier, because the TCS and Section 9(5) provisions are about supplies made by others through the platform. Do not present this as a rule stated in the statute. Those provisions are covered in the related topics. Here, your job is to classify the parties correctly.

Key rules to remember

Electronic commerce: Supply of goods or services or both, including digital products, over a digital or electronic network; Section 2(44). The supply must take place over the network. Merely displaying information is not enough.
Electronic commerce operator: Person who owns OR operates OR manages a digital or electronic facility or platform for electronic commerce; Section 2(45). Any one of the three activities makes a person an ECO. Ownership of the goods sold is not required, and the definition does not need third-party sellers.
Supplier: Person supplying goods or services or both + agent acting as such on behalf of the supplier; Section 2(105). On a marketplace, the seller is the supplier, not the platform, unless the platform itself sells.
Role test: Platform role = ECO; selling role = supplier; one entity can hold both roles; Decide the role separately for each transaction. Registration status is then checked person by person.

How to solve E-Commerce Operator and Supplier Definitions questions

Use this method for any case on ECO, supplier or registered person. It keeps the answer in provision-facts-conclusion form.

1List every party in the case: platform owner, sellers or service providers, buyers, agents, and any non-resident.
2Test whether the activity is electronic commerce: is goods, services or digital products supplied over a digital or electronic network?
3For each party, ask who owns, operates or manages the platform. That party is the ECO. State this with the definition.
4Ask who actually makes the supply of goods or services to the buyer. That party is the supplier, along with any agent acting for them.
5Check whether the ECO also sells its own goods or services. If yes, mark it as ECO and supplier for different transactions.
6Check registration status of each party. Note whether the supplier is registered or unregistered, since this decides the follow-on provisions.
7Link to the consequence asked in the question, such as TCS or tax payable by the ECO on notified services, and state it in plain words.
8Write a one-line conclusion naming each party and its role.

Quickest way: Three-question role check

When to use it: Use in MCQs and short case scenarios when you have only a few minutes.

Who runs the platform? That is the ECO.
Who sells to the buyer? That is the supplier.
Is the seller registered? Answer with the consequence only after this check.
If one entity does both, split its roles and answer for each.

Common mistakes in E-Commerce Operator and Supplier Definitions

Calling the platform the supplier for every sale.
The buyer pays the platform, so it looks like the platform sells.
Fix: Ask who makes the supply. The seller is the supplier. The platform is the supplier only for its own goods or services.
Saying an ECO must own the goods sold.
Students confuse an ECO with a trader or inventory holder.
Fix: The definition needs only owning, operating or managing the platform. Ownership of goods is irrelevant.
Treating any website as e-commerce.
The word 'electronic' is read loosely.
Fix: Check that goods, services or digital products are supplied over the network. A site that only gives information is not e-commerce supply.
Ignoring the dual role of an entity that sells on its own platform.
Students assign one label to one entity.
Fix: Label roles by transaction. The same company can be ECO for third-party sales and supplier for its own sales.
Assuming all sellers on a platform are registered persons.
Platforms usually ask for GSTIN, so students assume it for all.
Fix: Read the facts. Some sellers or service providers may be unregistered, and that changes the follow-on treatment.
Mixing the definitions with the TCS and Section 9(5) provisions.
All three appear together in one chapter.
Fix: First answer who is who using the definitions. Then apply the TCS or Section 9(5) rule in a separate step.

Worked examples

Example 1

BuyMart Ltd runs a mobile app on which independent sellers list goods. Buyers pay through the app and sellers ship to buyers. BuyMart also sells its own branded goods on the same app. Identify the ECO and the supplier(s).

Show the solution

Provision: an ECO is any person who owns, operates or manages a digital or electronic platform for electronic commerce. A supplier is the person supplying the goods, including an agent acting for the supplier.
Facts: BuyMart owns and operates the app. Independent sellers supply the goods listed by them. BuyMart also supplies its own branded goods.
Platform role: BuyMart owns and operates the platform, so it is an ECO.
Supply by sellers: the independent sellers make the supply to buyers, so they are the suppliers for those sales.
Supply of own goods: for its branded goods, BuyMart is the supplier as well as the ECO.

Answer: BuyMart is the ECO for the platform. The independent sellers are suppliers for their sales. BuyMart is also the supplier for its own branded goods.

Example 2

Sunrise Hotels Pvt Ltd has its own website on which it sells only its own room bookings. Separately, StayNow Ltd runs an online portal where many unregistered small guest-house owners offer rooms and customers book and pay on the portal. State who is a supplier and who is an ECO in each case, and whether Section 9(5) needs to be examined.

Show the solution

Provision: an ECO owns, operates or manages a platform for electronic commerce (Section 2(45)). The definition is wide and does not itself need third-party sellers. A supplier is the person making the supply.
Sunrise Hotels: it is the supplier of its own rooms. On the bare definition, it owns and operates a website through which it makes supplies, so it can be called an ECO. In an exam answer, it is usually treated as a supplier selling its own services, because the TCS and Section 9(5) provisions concern supplies made by others through the platform. This is the usual way to answer, not a rule stated in the statute.
StayNow: it owns and operates a portal over which accommodation services are supplied by others, so it is an ECO.
Guest-house owners: they supply the accommodation services to customers, so they are the suppliers. On the facts they are unregistered.
Section 9(5): under this provision, read with the notification, the ECO, and not the supplier, is liable to pay tax on notified services supplied through it. The notified services include accommodation in hotels, inns, guest houses, clubs or campsites supplied through the ECO (check the exact wording of the notification). For accommodation, the condition is that the supplier is unregistered. An exemption from registration under Section 23 does not displace this.
Application: the supply is accommodation in guest houses made through StayNow by unregistered owners. Under Section 9(5) read with the notification, StayNow is liable to pay the tax on these accommodation services.

Answer: Sunrise Hotels is the supplier of its own rooms. On the bare definition it could also be called an ECO, but it is usually treated as a supplier because the ECO provisions concern supplies by others through a platform. StayNow is the ECO, and the unregistered guest-house owners are the suppliers. Under Section 9(5) read with the notification, StayNow is liable to pay tax on the accommodation services supplied through it by the unregistered guest-house owners.

Exam tips

In case-scenario MCQs, underline the verbs: owns, operates, manages, supplies. They tell you the role directly.
Write the definition first, then apply it. Examiners award marks for the provision and the facts before the conclusion.
Always check whether the same entity plays two roles. This is a favourite trap.
Note the registration status of the supplier in the facts. It decides which later provision applies.
Quote section numbers only for the definitions you know well. Use plain words for the rest.

Practice questions from Electronic Commerce Transactions

E-Commerce Operator and Supplier Definitions in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

E-Commerce Operator and Supplier Definitions: frequently asked questions

Who is an electronic commerce operator under the CGST Act?

It is any person who owns, operates or manages a digital or electronic facility or platform for electronic commerce. Any one of these activities is enough. The person need not own the goods sold.

What is the difference between an e-commerce operator and a supplier?

The operator runs the platform. The supplier is the person who actually supplies the goods or services to the buyer, including an agent acting for the supplier. One entity can be both when it sells its own goods on its own platform.

What counts as an electronic commerce transaction?

It is a supply of goods or services or both, including digital products, made over a digital or electronic network. The supply itself must happen through the network. A website that only advertises is not enough.

Why does it matter whether the seller is registered?

The treatment of the supply and the duties of the platform depend on the seller's status. Questions often make the seller unregistered to test whether you notice the follow-on provisions such as tax payable by the operator for notified services.