Reverse Charge Supply explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
A goods transport agency moves your consignment and also handles loading, unloading and in-transit insurance, charging one amount. You pay under reverse charge. Is that a composite supply taxable at the rate for the principal supply — or a bundle of separate supplies, each rated on its own?
Section 8 does not answer it cleanly, and the reason is a drafting gap the ICAI commentary in Volume I identifies squarely.
The definitions of composite supply (s.2(30)) and mixed supply (s.2(74)) are framed around a supply made by a taxable person. Where a supply comes from an unregistered or non-taxable person and the recipient pays under reverse charge, that condition is not literally satisfied — so the bundle would be neither composite nor mixed, which defeats the legislative intent. The ICAI position: in reverse charge transactions the supply must be understood as made by the registered person who is the recipient, so that ordinary composite and mixed supply analysis applies.
Where the gap comes from
Section 2(30) defines composite supply as a supply made by a taxable person to a recipient, consisting of two or more taxable supplies naturally bundled and supplied in conjunction in the ordinary course of business, one of which is a principal supply.
Section 2(74) defines mixed supply as two or more individual supplies made in conjunction by a taxable person for a single price.
Both hinge on "by a taxable person". A "taxable person" under s.2(107) is a person registered or liable to be registered under s.22 or s.24.
Now take a reverse charge supply from a person who is not registered and not liable to be — a farmer, a small unregistered service provider, a foreign supplier with no Indian presence. The supply exists. Tax is payable. But the supplier is not a taxable person, so on a strict reading the bundle falls outside both definitions.
Why the strict reading cannot be right
If the bundle is neither composite nor mixed, there is no rule to determine its rate. Section 8 supplies the rate rule for both categories and nothing else covers a bundle. The recipient would be left to rate each element independently — which is exactly what s.8 was written to prevent.
Worse, the same economic transaction would be taxed differently depending on the registration status of the supplier, which has nothing to do with the character of what was supplied.
The ICAI commentary resolves it: in reverse charge transactions, the supply must be understood to have been made by the registered person who is the recipient of supply. On that reading, even supplies effected by unregistered persons can be composite or mixed, subject to the normal conditions.
Applying it in practice
Test the bundle on its own terms. Are the elements naturally bundled and supplied in conjunction in the ordinary course of business? If yes, and one is a principal supply, it is composite and the principal supply's rate applies to the whole. The naturally bundled test →
If not naturally bundled but supplied for a single price, it is mixed, and s.8(b) applies the highest rate among the elements.
If separately priced and not naturally bundled, they are independent supplies, each rated on its own — and each has to be tested separately against the RCM notification.
That last point is the practical trap. A single RCM entry does not automatically cover every element of what the supplier delivered. Legal services from an advocate are notified under RCM; a reimbursement of court fees or a printing charge invoiced alongside may not be a legal service at all.
The self-invoice has to reflect the conclusion
Under s.31(3)(f), a registered person liable under RCM for a supply from an unregistered supplier must issue a self-invoice. Because the recipient writes that document, the recipient's characterisation is the one on record.
So the analysis has to happen before the self-invoice is raised, not during an audit two years later:
- decide whether the bundle is composite, mixed or separate;
- identify the principal supply and state it;
- apply one rate (composite), the highest rate (mixed), or separate rates (independent);
- keep the reasoning with the voucher.
A self-invoice showing a single line at the principal supply's rate, with no supporting analysis, is a weak position. One showing the same treatment with a two-line note on why the elements were naturally bundled is a strong one.
Key takeaways
- s.2(30) and s.2(74) are framed around a supply by a taxable person.
- Under reverse charge the supplier may not be a taxable person, creating a literal gap.
- The ICAI position is to read the registered recipient as the supplier for this purpose.
- Composite → principal supply's rate; mixed → highest rate; separate → individual rates.
- Each element must be independently tested against the RCM notification.
- The self-invoice under s.31(3)(f) records the recipient's own characterisation — get it right first.
Read next
- Composite Supply and Mixed Supply: Differences and Examples
- The Naturally Bundled Test
- Reverse Charge Mechanism Under GST: Complete Guide
- Self-Invoice for Reverse Charge Purchases
Disclaimer: Positions stated as on 5 September 2026, based on ICAI Background Material on GST, Volume I (2026 edition).