Indirect Tax Laws · Electronic Commerce Transactions

Tax Collection at Source (TCS) by E-Commerce Operators

Updated 5 October 2026 · Fact-checked

TCS under Section 52 CGST requires an e-commerce operator to collect a notified percentage (not above 1%) of the net value of taxable supplies made through its platform by other suppliers, where the operator collects the payment. To solve a question, find taxable supplies, remove returns and 9(5) services, then apply the rate stated.

Understand Tax Collection at Source (TCS) by E-Commerce Operators

An e-commerce operator runs a platform where other suppliers sell goods or services. Many small sellers are hard to track. So the law makes the operator collect a small slice of tax at source when it collects the customer's payment. This is TCS under Section 52 of the CGST Act.

The duty applies only when the operator itself collects the consideration for the supply made by the supplier. If the customer pays the supplier directly, the operator does not collect TCS on that supply. The operator collects an amount not exceeding 1% of the net value of taxable supplies, as notified by the Government on the Council's recommendation. The notified rate has changed over time. It was 1% (0.5% CGST + 0.5% SGST, or 1% IGST) at first. From 10 September 2024 it was reduced to 0.5% (0.25% CGST + 0.25% SGST/UTGST, or 0.5% IGST). The rate is as notified, so in the exam use the rate the question gives. If none is given, state the rate you assume.

Net value of taxable supplies is worked out month by month. Take the aggregate value of taxable supplies of goods or services or both, made through the operator by registered persons during the month. Leave out services on which the operator itself pays tax under Section 9(5). Then reduce by the value of taxable supplies returned to the suppliers during that month. Exempt, nil-rated and non-taxable supplies are not taxable supplies, so they stay out. Use value excluding GST.

The operator pays the TCS to the Government and files the monthly statement (GSTR-8) by the 10th of the following month. These are one and the same deadline. The amount is credited to the supplier's electronic cash ledger, and the supplier can use it to pay tax. TCS is not an extra tax. It is an advance collection.

Do not confuse TCS with TDS under Section 51. TDS is deducted by notified government departments and bodies when they pay a supplier. TCS is collected by the platform operator when it receives the payment from the customer.

Key rules to remember

TCS amount: TCS = Rate × Net value of taxable supplies; Rate is as notified, capped at 1% by Section 52. Compute supplier-wise, month-wise.
Net value of taxable supplies: Net value = Taxable supplies by registered persons through the platform in the month − Taxable supplies returned in the month − Services on which operator pays tax under Section 9(5); Use value excluding GST. Exempt, nil-rated and non-taxable supplies are not part of taxable supplies.
Split of TCS: Intra-State: CGST + SGST/UTGST, each half of the rate. Inter-State: IGST at the full rate; For a 0.5% rate: 0.25% + 0.25%, or 0.5% IGST. Follow the supply's place of supply and supplier's location.
Payment and statement timeline: Pay the TCS and file GSTR-8 by the 10th of the following month; This is a single deadline. TCS is credited to the supplier's electronic cash ledger.
Condition for collection: TCS applies only where the operator collects the consideration for the supply; If the customer pays the supplier directly, no TCS on that supply.
TDS vs TCS: TDS (Section 51): by notified deductors on payment to supplier. TCS (Section 52): by e-commerce operators on collection from customer; Both are credited to the supplier's electronic cash ledger and are not additional tax.

How to solve Tax Collection at Source (TCS) by E-Commerce Operators questions

Use this order for any TCS question. It follows the logic of Section 52 and keeps you from missing the exclusions.

1Check who is the operator and whether it is an agent or a platform owner. TCS applies to the operator that owns, operates or manages the digital platform, not to a mere agent.
2Check whether the operator collects the consideration. If the customer pays the supplier directly, exclude that supply.
3List supplies per supplier for the month and keep only taxable supplies by registered persons. Remove exempt, nil-rated and non-taxable supplies.
4Remove services on which the operator pays tax under Section 9(5). TCS does not apply to them, as the operator is the person liable.
5Deduct taxable supplies returned to suppliers during the same month. Use value excluding GST.
6Apply the rate given. Split into CGST + SGST for intra-State supplies and IGST for inter-State supplies.
7State the compliance: the TCS is paid and GSTR-8 is filed by the 10th of the following month, and the supplier gets credit in the electronic cash ledger.
8Write the conclusion in one line with the final TCS figure.

Quickest way: Net value, then rate

When to use it: Use for numerical questions where several suppliers, returns and exempt items are mixed.

Strike off exempt, nil-rated and non-taxable items first.
Strike off Section 9(5) services and supplies where the operator did not collect payment.
Add the rest and subtract returns of the month.
Multiply by the rate given and show the CGST/SGST or IGST split in one line.
Add one line on the 10th-of-next-month payment and GSTR-8 deadline if the question asks for compliance.

Common mistakes in Tax Collection at Source (TCS) by E-Commerce Operators

Applying TCS on gross sales including exempt and nil-rated supplies.
Students read 'value of supplies' and forget the word 'taxable'.
Fix: Net value covers only taxable supplies. Remove exempt, nil-rated and non-taxable items before computing.
Forgetting to deduct supplies returned during the month.
The return is given as a side note in the case and gets ignored.
Fix: Always subtract the taxable value of returns made in the same month before applying the rate.
Including Section 9(5) services in the TCS base.
Students treat all platform services alike.
Fix: The operator pays tax itself on notified services under Section 9(5), so those services are excluded from net value.
Collecting TCS even where the customer pays the supplier directly.
Students link TCS only to the platform, not to collection of consideration.
Fix: Check who collects the payment. TCS applies only where the operator collects it.
Using the wrong rate or the wrong tax split.
Students memorise 1% from older material and ignore the rate in the question.
Fix: Use the rate given in the question. For inter-State supplies use IGST at the full rate, and for intra-State supplies split equally into CGST and SGST.
Mixing up TDS under Section 51 with TCS under Section 52.
Both are 'at source' provisions with similar compliance.
Fix: TDS is by notified deductors paying a supplier. TCS is by the operator collecting from the customer. Write the difference in two lines.

Worked examples

Example 1

ShopEasy, an e-commerce operator, collects payments for all sales on its platform. In a month, registered supplier A made taxable supplies of ₹10,00,000 and registered supplier B made taxable supplies of ₹6,00,000 plus exempt supplies of ₹2,00,000. Goods worth ₹1,00,000 (taxable value) sold by A were returned during the same month. All supplies are intra-State. The TCS rate is 0.5%. Compute the TCS.

Show the solution

Exempt supplies of ₹2,00,000 by B are not taxable supplies, so they are excluded.
Supplier A's net value = ₹10,00,000 − ₹1,00,000 = ₹9,00,000.
Supplier B's net value = ₹6,00,000.
TCS on A = 0.5% × ₹9,00,000 = ₹4,500.
TCS on B = 0.5% × ₹6,00,000 = ₹3,000.
Total TCS = ₹4,500 + ₹3,000 = ₹7,500, split as CGST ₹3,750 and SGST ₹3,750.

Answer: Total TCS is ₹7,500 (CGST ₹3,750 + SGST ₹3,750). It is paid, and reported in GSTR-8, by the 10th of the next month.

Example 2

BuyNow, an e-commerce operator based in Karnataka, collects payment for supplier C, a registered Karnataka seller. In a month, C supplied taxable goods of ₹4,00,000 to customers in Maharashtra and taxable goods of ₹2,00,000 to customers in Karnataka, and BuyNow collected the payment for all of these. There were no returns. C also made further supplies worth ₹50,000 for which customers paid C directly in cash, so BuyNow did not collect payment on them. Rate is 0.5%. Compute the TCS and state what happens to it.

Show the solution

The further supplies of ₹50,000 were paid for directly to C, so BuyNow did not collect the consideration. They are excluded from the TCS base.
Inter-State supplies: net value ₹4,00,000, so IGST TCS = 0.5% × ₹4,00,000 = ₹2,000.
Intra-State supplies: net value ₹2,00,000. TCS = 0.5% × ₹2,00,000 = ₹1,000, split as CGST 0.25% = ₹500 and SGST 0.25% = ₹500.
Total TCS = ₹2,000 + ₹500 + ₹500 = ₹3,000.
BuyNow pays this and reports it in GSTR-8 by the 10th of the next month.
The amount is credited to C's electronic cash ledger, and C can use it to pay GST.

Answer: Total TCS is ₹3,000: IGST ₹2,000, CGST ₹500 and SGST ₹500. It is credited to supplier C's electronic cash ledger after BuyNow reports it in GSTR-8.

Exam tips

Write the provision first: Section 52 of the CGST Act, operator collects consideration, rate as notified and up to 1%. Then apply facts. This gives marks in the provision-facts-conclusion pattern.
In numericals, show the net value computation as a small list: add taxable supplies, subtract returns, remove exclusions. Marks are often given for the net value before the rate is applied.
Watch for traps in case scenarios: exempt supplies, Section 9(5) services, direct payments to the supplier, and returns in the same month.
Be ready for the TDS vs TCS comparison on who deducts or collects, when, and on what base. Two or three crisp points are enough.
Use the rate in the question. If the question is silent, say which rate you assume and that the rate is as notified.

Practice questions from Electronic Commerce Transactions

Tax Collection at Source (TCS) by E-Commerce Operators in other exams

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

Tax Collection at Source (TCS) by E-Commerce Operators: frequently asked questions

What is the TCS rate for an e-commerce operator under GST?

Section 52 caps the rate at 1% of the net value of taxable supplies, and the actual rate is notified by the Government. The rate was 1% at first and was reduced to 0.5% (0.25% CGST + 0.25% SGST, or 0.5% IGST) from 10 September 2024. In the exam, use the rate given in the question.

How do I calculate net value of taxable supplies for TCS?

Add the taxable supplies made through the platform by registered persons in the month. Remove services on which the operator pays tax under Section 9(5). Then subtract taxable supplies returned during the month. Exempt and nil-rated supplies are not included.

Does TCS apply if the customer pays the supplier directly?

No. Section 52 applies where the operator collects the consideration for the supply. If the customer pays the supplier directly, the operator does not collect TCS on that supply.

What is the difference between TDS and TCS under GST?

TDS under Section 51 is deducted by notified persons such as government bodies when they pay a supplier. TCS under Section 52 is collected by an e-commerce operator when it collects payment from the customer. Both amounts are credited to the supplier's electronic cash ledger and are not additional taxes.

When must the operator pay TCS and file GSTR-8?

The operator pays the TCS and files GSTR-8 by the 10th of the month following the month in which it collected the tax. This is one deadline, not two. The amount then shows in the supplier's electronic cash ledger.