Section 13 Of The Central Goods And Services Tax Act 2017
Original Text
13. Time of supply of services.
(1) The liability to pay tax on services shall arise at the time of supply, as determined in accordance with the provisions of this section.
(2) The time of supply of services shall be the earliest of the following dates, namely:—
(a) the date of issue of invoice by the supplier, if the invoice is issued within the period prescribed under section 31 or the date of receipt of payment, whichever is earlier; or
(b) the date of provision of service, if the invoice is not issued within the period prescribed under section 31 or the date of receipt of payment, whichever is earlier; or
(c) the date on which the recipient shows the receipt of services in his books of account, in a case where the provisions of clause (a) or clause (b) do not apply:
Provided that where the supplier of taxable service receives an amount up to one thousand rupees in excess of the amount indicated in the tax invoice, the time of supply to the extent of such excess amount shall, at the option of the said supplier, be the date of issue of invoice relating to such excess amount.
Explanation.––For the purposes of clauses (a) and (b)––
(i) the supply shall be deemed to have been made to the extent it is covered by the invoice or, as the case may be, the payment;
(ii) “the date of receipt of payment” shall be the date on which the payment is entered in the books of account of the supplier or the date on which the payment is credited to his bank account, whichever is earlier.
(3) In case of supplies in respect of which tax is paid or liable to be paid on reverse charge basis, the time of supply shall be the earlier of the following dates, namely:––
(a) the date of payment as entered in the books of account of the recipient or the date on which the payment is debited in his bank account, whichever is earlier; or
(b) the date immediately following sixty days from the date of issue of invoice or any other document, by whatever name called, in lieu thereof by the supplier, in cases where invoice is required to be issued by the supplier; or
(c) the date of issue of invoice by the recipient, in cases where invoice is to be issued by the recipient:
Provided that where it is not possible to determine the time of supply under clause (a) or clause (b) or clause (c), the time of supply shall be the date of entry in the books of account of the recipient of supply:
Provided further that in case of supply by associated enterprises, where the supplier of service is located outside India, the time of supply shall be the date of entry in the books of account of the recipient of supply or the date of payment, whichever is earlier.
(4) In case of supply of vouchers by a supplier, the time of supply shall be––
(a) the date of issue of voucher, if the supply is identifiable at that point; or
(b) the date of redemption of voucher, in all other cases.
(5) Where it is not possible to determine the time of supply under the provisions of sub-section (2) or sub-section (3) or sub-section (4), the time of supply shall––
(a) in a case where a periodical return has to be filed, be the date on which such return is to be filed; or
(b) in any other case, be the date on which the tax is paid.
(6) The time of supply to the extent it relates to an addition in the value of supply by way of interest, late fee or penalty for delayed payment of any consideration shall be the date on which the supplier receives such addition in value.
Visual Summary
Forward Charge
General Rule: Earliest of Invoice Date or Payment Date (if invoice issued within 30 days).
Late Invoice: Earliest of Provision of Service or Payment Date.
Reverse Charge (RCM)
Earliest of:
1. Date of Payment
2. 61st day from Supplier’s Invoice
3. Recipient’s Self-Invoice Date (if applicable)
Vouchers & Interest
Vouchers: Issue date (if identifiable) OR Redemption date.
Interest/Late Fee: Date of actual receipt by supplier.
Summary
Section 13 of the CGST Act determines the exact point in time when the liability to pay GST on services arises. This is crucial because tax rates and due dates for payment are pegged to this specific moment.
- For Standard Services (Forward Charge): The liability usually arises when the invoice is issued or payment is received, whichever is earlier. However, if the supplier delays issuing the invoice beyond the prescribed time limit (usually 30 days from the service), the tax point shifts back to when the service was actually provided.
- For Reverse Charge Mechanism (RCM): The recipient is liable to pay tax. The time of supply is generally the date of payment or 60 days after the supplier’s invoice date. Recent amendments also clarify the rule for self-invoicing situations.
- For Associated Enterprises (Foreign): If an Indian company receives services from its foreign parent/subsidiary, the liability arises when the entry is made in the Indian company’s books, regardless of actual payment.
- Interest/Late Fees: Tax on penalties or interest for delayed payment is only payable when the supplier actually receives that extra money.
In-Depth Analysis
1. The Forward Charge Mechanism (Section 13(2)):
This subsection places a heavy emphasis on the timely issuance of invoices (as per Section 31). If an invoice is issued within the prescribed period (generally 30 days from the supply of service, or 45 days for insurers/banks), the time of supply is the Date of Invoice or Date of Payment, whichever is earlier. If the invoice is delayed, the law penalizes the supplier by shifting the time of supply to the Date of Provision of Service, potentially causing interest liability for late tax payment.
2. Reverse Charge Mechanism (Section 13(3)):
Under RCM, the recipient pays the tax. To prevent indefinite deferral of tax, the law sets a hard limit. If payment isn’t made within 60 days of the supplier’s invoice, tax becomes due on the 61st day.
Note: The Finance Act 2024 introduced clause (c) to Section 13(3), specifically addressing cases where the recipient issues a self-invoice (because the supplier is unregistered). In such cases, the date of the recipient’s invoice becomes the trigger point.
3. Associated Enterprises (Proviso to Section 13(3)):
For imports of services from related parties (associated enterprises) located outside India, the “60-day rule” does not apply. Instead, the liability is triggered immediately upon entry in the books of account of the recipient. This prevents multinational companies from deferring GST by delaying payments to their own subsidiaries/holding companies.
4. Vouchers (Section 13(4)):
The distinction here is based on identifiability. If a voucher is specific to a service (e.g., “Haircut at Salon X”), tax is due at issuance. If it is a general value voucher (e.g., “Rs. 1000 Gift Card for Mall Y”), tax is due at redemption, as the specific rate of tax cannot be determined until the item is chosen.
Deep Research & Legal Precedents
The interpretation of Section 13 has evolved through significant judicial scrutiny and legislative amendments. Below are key developments relevant as of November 2025.
1. Landmark Judgments
The Supreme Court held that importers cannot be deemed recipients of ocean freight services in CIF contracts. This effectively nullified the RCM liability for Indian importers on ocean freight, rendering the Time of Supply provisions under Section 13(3) inapplicable for such specific transactions.
The Supreme Court stayed a Bombay High Court order regarding GST on Joint Development Agreements (JDAs). This has kept the “Time of Supply” for Transfer of Development Rights (TDR) an open question—whether it arises at the signing of the JDA (Section 13(2)) or at project completion (Notification No. 4/2019).
2. Legislative Amendments (Finance Act 2024)
Amendment to Section 13(3): A new clause (c) was inserted to address self-invoicing under RCM. Previously, if an unregistered supplier provided a service, the recipient had to rely on payment dates or the 60-day rule. The amendment clarifies that where the recipient is liable to issue an invoice (Self-Invoicing under Section 31(3)(f)), the time of supply is the date of issue of invoice by the recipient. This closes a compliance gap for corporate guarantees and unregistered vendor supplies.
3. Online Gaming Controversy
The Gameskraft Technologies litigation (currently sub-judice at the Supreme Court) impacts Section 13 significantly. If online gaming is classified as “gambling” (actionable claim), the time of supply is when the bet is placed. If classified as a “service,” it is when the platform fee is charged. The industry remains in a state of flux regarding the exact point of taxation for past periods.
Practical Examples
Scenario 1: The Delayed Invoice (Forward Charge)
A Chartered Accountant completes an audit on April 10th. He issues the invoice on May 20th (more than 30 days later). The client pays on May 25th.
Result: Since the invoice was delayed beyond 30 days, the Time of Supply is the Date of Provision of Service (April 10th). The CA is liable to pay tax for the month of April, potentially attracting interest if he pays it with his May return.
Scenario 2: Reverse Charge Mechanism (RCM)
Company X receives legal services from an Advocate on January 1st (Invoice date). Company X makes the payment on March 15th (74 days later).
Result: Under Section 13(3), the time of supply is the earlier of payment or the 61st day from invoice. Since payment was late, the Time of Supply is March 3rd (61st day from Jan 1st). Company X must pay tax for March.
Scenario 3: Late Payment Charges
A telecom company charges a customer ₹100 as a late fee for a delayed bill payment. The customer pays this ₹100 in the next month’s bill.
Result: Under Section 13(6), the liability to pay GST on this ₹100 arises only when the telecom company actually receives the payment, not when they raised the debit note.
Key Takeaways
- ✔ Invoice Discipline: Issuing invoices within 30 days is critical to defer tax liability to the payment/invoice date rather than the service completion date.
- ✔ RCM 60-Day Rule: Recipients must track vendor invoice dates carefully; delaying payment beyond 60 days triggers tax liability immediately.
- ✔ Book Entry Matters: For associated enterprises, mere book entry triggers liability, even if no funds are transferred.
- ✔ Advances are Taxable: Unlike goods (where advances are often exempt), GST is payable on advances received for services at the time of receipt.
Process Flowchart
Practice Questions
Q1. Mr. A provides a service on 1st Jan. Invoice issued on 10th Jan. Payment received on 5th Jan. What is the time of supply?
- A) 1st Jan
- B) 10th Jan
- C) 5th Jan
- D) 31st Jan
Show Answer
Correct Answer: C) 5th Jan.
Reason: Invoice was issued within 30 days. Therefore, Time of Supply is the earlier of Invoice Date (10th) or Payment Date (5th).
Q2. In a Reverse Charge transaction (not associated enterprise), if the supplier issues an invoice on 1st Aug and payment is made on 1st Nov, when is the time of supply?
- A) 1st Aug
- B) 1st Nov
- C) 1st Oct (61st day)
- D) 30th Sep
Show Answer
Correct Answer: C) 1st Oct (61st day).
Reason: Payment was made after 60 days. Therefore, Time of Supply is the date immediately following 60 days from the invoice date.
Q3. What is the time of supply for interest received on delayed payment of consideration?
- A) Date of original invoice
- B) Date of debit note
- C) Date of receipt of interest
- D) End of financial year
Show Answer
Correct Answer: C) Date of receipt of interest.
Reason: Section 13(6) specifically states that for interest/late fees, the time of supply is the date the supplier receives such addition in value.
Related Provisions
| Section | Description |
|---|---|
| Section 12 | Time of supply of goods (Contrast with services). |
| Section 31 | Tax Invoice (Determines the due date for issuing invoices). |
| Section 15 | Value of Taxable Supply (Includes interest/late fees). |
Conclusion
Section 13 acts as the temporal anchor for service taxation under GST. By linking the tax liability to the invoice date (if timely) or the provision of service (if delayed), it enforces financial discipline among service providers. For recipients under RCM, it mandates timely payments to vendors to avoid early tax outflows. Understanding these timing differences is essential for cash flow management and compliance, especially in light of recent Supreme Court rulings like Mohit Minerals and the evolving landscape of digital services.