Decoding GST Valuation

A Practical Guide to the Value of Supply and GST Valuation Rules

Under the Goods and Services Tax (GST) framework, tax follows value. An incorrect valuation can affect every downstream tax calculation, invoice, return, and compliance position. This guide explains how to determine the correct value of supply under Section 15 of the CGST Act and the valuation mechanisms prescribed under Rules 27 to 35.

1. Foundation of GST Valuation: Section 15 and Transaction Value

Section 15 of the CGST Act sets out the primary method for determining taxable value. The transaction value—that is, the price actually paid or payable for goods or services—is accepted as the taxable value when both of the following conditions are satisfied:

·        The parties are not related: The supplier and recipient must not be related persons or distinct persons under GST.

·        Price is the sole consideration: The transaction must not involve barter, exchange, hidden consideration, or any non-monetary inducement in addition to the stated price.

If either condition is not met, the transaction value is not sufficient on its own and the taxable value must be determined under the relevant GST Valuation Rules.

2. Mandatory Additions to Value under Section 15(2)

Even where transaction value is accepted, the following amounts must be added to the taxable value when applicable:

• Non-GST Taxes: Any taxes, cesses, or fees levied under laws other than GST, if charged separately.
• Recipient-Borne Liabilities: Amounts the supplier is liable to pay but which have been incurred by the recipient.
• Incidental Expenses: Costs like commission, packing, or other expenses charged by the supplier at or before delivery.
• Penalties and Interest: Any interest, late fee, or penalty charged for the delayed payment of consideration.
• Subsidies: Subsidies that are directly linked to the price, excluding those provided by the Central or State Governments.

3. Exclusions from Value: Treatment of Discounts under Section 15(3)

Discounts do not automatically reduce taxable value. They are excluded only when the statutory conditions under Section 15(3) are satisfied.

• Pre-Supply Discounts: These are excluded from the value if they are given before or at the time of supply and are duly recorded on the face of the tax invoice.

·        Post-supply discounts: These should be supported through a credit note, and the recipient must reverse the attributable input tax credit (ITC), where applicable. Note: Pursuant to the 56th GST Council meeting recommendations and the Finance Act 2026, the earlier condition requiring linkage to a pre-existing agreement has been omitted.

4. GST Valuation Rules: Rules 27 to 35

Where the standard transaction value cannot be adopted, the GST Valuation Rules prescribe alternative mechanisms for determining taxable value.

·        Rule 27 — Consideration not wholly in money: Applies to barter, exchange, and similar arrangements. The value is determined sequentially using open market value (OMV), monetary consideration plus the money equivalent of non-monetary consideration, value of supplies of like kind and quality, and finally the residual method.

·        Rule 28 — Related party and distinct person transactions: Applies where supplies are made between related persons or distinct persons. Valuation generally follows OMV, followed by the value of supplies of like kind and quality, and then Rule 30 or Rule 31 where required.

o   Key exception: Where the recipient is eligible for full ITC, the invoice value is deemed to be the OMV.

o   Corporate guarantees: Under Rule 28(2), the value of a corporate guarantee supplied to a related party is deemed to be 1% per annum of the guaranteed amount or the actual consideration, whichever is higher.

·        Rule 32 — Specific valuation methods: Provides special valuation frameworks for sectors such as foreign currency exchange, air travel agents, life insurance, and second-hand goods under the margin scheme.

·        Rule 33 — Pure agent reimbursements: Amounts incurred as a pure agent may be excluded from taxable value if the supplier acts on authorization, shows the reimbursement separately, recovers only the actual cost, and procures the goods or services in addition to the supplier’s own supply.

·        Rules 31A, 31B, and 31C — Gaming, betting, casinos, and online gaming: These rules prescribe specific valuation bases, generally linked to the face value of the bet, deposit made by the player, or amount paid for casino chips or tokens, without deductions for refunds.

5. Special Situations: Free Supplies and Job Work

·        Free supplies: Supplies made without consideration between related persons or distinct persons may be taxable as deemed supplies under Schedule I. For free samples and gifts to unrelated parties, GST is generally not payable; however, related ITC may need to be blocked or reversed. Buy-one-get-one offers are generally treated as two supplies made for a single price, with ITC eligibility retained subject to conditions.

·        Job work: GST is payable on the job worker’s value addition, including labour and materials supplied by the job worker. The value of free-issue materials supplied by the principal manufacturer is generally not included in the job worker’s taxable value.

Key Takeaways for Businesses

To reduce litigation risk and strengthen compliance, businesses should maintain a transaction-wise valuation matrix covering discounts, reimbursements, barter arrangements, related-party supplies, free supplies, and sector-specific valuation scenarios. Contracts, invoices, credit notes, and supporting records should be reviewed regularly to ensure they clearly support the GST valuation treatment adopted.