Reverse Charge Mechanism Under GST: Simple Guide for Business Owners
RCM is often missed when an invoice does not show GST, comes from an unregistered supplier or is issued by an overseas provider. Missing the transaction can lead to interest, incorrect credit claims and return-filing problems.
This guide is for GST-registered business owners who have been operating for one to three years and have started receiving freight, legal, rental, director or overseas service bills. It explains how to identify and handle these transactions without assuming detailed tax knowledge.
Quick summary
- Under the reverse charge mechanism, the recipient pays GST directly to the government instead of paying it to the supplier.
- RCM applies only to notified transactions. It does not apply to every purchase from an unregistered supplier.
- The tax must be paid through the electronic cash ledger. Available input tax credit cannot be used for this payment.
- A self-invoice may be required when the supplier is unregistered. Rule 47A generally requires it to be issued within 30 days of receiving the supply.
- Eligible input tax credit can be claimed after paying the tax and meeting the normal GST conditions.
- RCM liability and credit must be reported in the correct tables of GSTR-3B.
What Is the Reverse Charge Mechanism?
Under the normal forward-charge system, the supplier collects and pays GST. Under reverse charge, the recipient calculates the tax and pays it directly to the government.
For example, suppose a registered business receives a taxable legal-service bill of ₹20,000 from an advocate. If RCM applies, the advocate does not collect GST from the business. The business calculates the applicable GST and deposits it through its own electronic cash ledger.
Section 2(98) of the CGST Act defines reverse charge as the recipient’s liability to pay tax instead of the supplier.
RCM mainly applies to notified goods and services, specified purchases from unregistered suppliers and taxable imports of services.
Common RCM Transactions for Small Businesses
The following are some situations a growing business is more likely to encounter.
| Transaction | When RCM May Apply | Important Point |
|---|---|---|
| Goods Transport Agency freight | A GTA issues a consignment note, has not chosen the applicable forward-charge option, and supplies the service to a notified recipient. | Confirm that a consignment note was issued. The RCM rate is generally 5%. |
| Legal services | An individual advocate, senior advocate or firm of advocates provides taxable legal services to a business entity | Specified legal services may be exempt when the business’s turnover in the previous financial year did not exceed the applicable GST registration threshold under Notification 12/2017-Central Tax (Rate). |
| Commercial-property rent | An unregistered landlord rents commercial immovable property to a registered person other than a composition taxpayer. | This entry has applied since 10 October 2024 under Notification 09/2024-Central Tax (Rate). Composition taxpayers have been excluded from it since 16 January 2025 under Notification 07/2025-Central Tax (Rate). |
| Imported services | A service received from a supplier outside India qualifies as a taxable import of service | Check who issued the invoice, the place of supply and whether the supplier has an Indian GSTIN. IGST applies at the rate applicable to the service. |
| Metal scrap | Specified scrap under Chapters 72 to 81 is purchased from an unregistered supplier by a registered person | This entry has applied since 10 October 2024 under Notification 06/2024-Central Tax (Rate). The GST rate depends on the HSN classification of the scrap. |
| Director services | A director provides taxable services to a company or body corporate outside an employer-employee relationship | Salary paid for services as an employee is outside GST. Sitting fees, commission and other independent services may attract RCM. |
Transaction
When RCM May Apply
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When RCM May Apply
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When RCM May Apply
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Note that this is not the complete notified list. Additional entries may apply to businesses in sectors such as insurance, banking, construction, agriculture and security services.
How to Review a Purchase for RCM
Use the following process before treating a purchase as an RCM transaction.
Check the Type of Supply
Identify exactly what was purchased. Freight, legal advice, rent, software and scrap may all follow different rules. An ordinary purchase from an unregistered supplier does not automatically attract RCM.
Check the Supplier and Recipient Conditions
Some RCM entries depend on the supplier’s registration status, while others depend on the type of recipient. Also check whether the supplier has chosen a permitted forward-charge option and whether any exemption applies.
Check the Invoice and Agreement
Rule 46 requires a tax invoice to mention whether tax is payable on reverse charge. This is a useful indicator, but the invoice wording alone does not decide the legal treatment. Check the supplier’s GSTIN, legal name, address, service description, agreement and place of supply.
Foreign Software and Overseas Services
A bill received in dollars, euros or another foreign currency does not automatically attract reverse charge GST.
First check who issued the invoice. Some international platforms bill Indian customers through an Indian company with a GSTIN. In that case, the invoice normally follows the regular domestic GST process. RCM may apply where:
- the supplier is located outside India;
- the recipient is located in India;
- the service qualifies as an import of service;
- the place of supply is in India; and
- the service is not exempt.
Common examples may include overseas software subscriptions, cloud services, advertising platforms, consultants and freelancers. The contract and invoice must be reviewed because the treatment can differ between platforms.
Do not decide only from the billing currency or payment method. The legal supplier and place-of-supply conditions matter more than whether the card was charged in rupees or foreign currency.
Can RCM Make GST Registration Compulsory?
Section 24(iii) of the CGST Act lists persons who are required to pay tax under reverse charge among the categories that must obtain GST registration.
Once a business has an actual RCM liability, GST registration may be compulsory even if its turnover is below the normal threshold. The business should first confirm that the transaction is taxable and is not covered by an exemption.
Documents Required for RCM
Self-Invoice
A registered recipient must generally issue a self-invoice under Section 31(3)(f) when it receives a notified RCM supply from an unregistered supplier. Rule 47A, introduced through Notification 20/2024-Central Tax, requires the self-invoice to be issued within 30 days from the date of receipt of the supply.
A self-invoice is generally not required where the supplier is registered and has issued a valid invoice showing that reverse charge applies.
Payment Voucher
The recipient must also issue a payment voucher when making payment to the supplier for an applicable reverse-charge transaction. A payment voucher and a self-invoice are separate documents. One records the taxable inward supply, while the other records the payment made to the supplier.
How RCM Tax Is Paid
RCM tax is paid directly by the recipient to the government. The supplier is paid only the value of the goods or services because the supplier does not collect the RCM tax from the recipient.
The recipient must deposit the required amount in the electronic cash ledger and use it to pay the liability reported in GSTR-3B. Available input tax credit cannot be used for this payment, even when the business has enough credit in its electronic credit ledger.
For example, if a business has an RCM liability of ₹8,000 and an available ITC balance of ₹1,00,000, it must still deposit ₹8,000 in cash. After paying the RCM liability, the business may claim eligible ITC subject to the normal conditions explained in the next section. The payment process is therefore:
- Calculate the applicable GST on the RCM transaction.
- Deposit the required amount in the electronic cash ledger.
- Report and pay the liability through GSTR-3B.
- Claim eligible ITC in the appropriate GSTR-3B table.
RCM creates an immediate cash outflow even when the full amount is later available as input tax credit.
Can You Claim ITC on RCM Tax?
A regular taxpayer may claim input tax credit after paying the RCM tax, provided that:
- the purchase is used for business;
- the required invoice or self-invoice is available;
- the tax has been paid;
- the credit is not blocked under Section 17(5); and
- the other conditions under Sections 16 and 17 are met.
The payment may therefore become tax-neutral over time when full credit is available. Once eligible, the credit can be used against other output GST liability. Claiming ITC does not automatically return the cash already paid under RCM.
Credit may be unavailable or restricted where the purchase is used for personal purposes, exempt supplies or an expense covered by the blocked-credit provisions. Composition taxpayers cannot claim ITC.
How to Report RCM in GSTR-3B
The main tables for reporting RCM in GSTR-3B are:
| GSTR-3B Table | What to Report |
|---|---|
| Table 3.1(d) | Tax liability on inward supplies covered by reverse charge |
| Table 4A(2) | Eligible ITC on imported services |
| Table 4A(3) | Eligible ITC on other inward supplies liable to reverse charge |
GSTR-3B Table
What to Report
GSTR-3B Table
What to Report
GSTR-3B Table
What to Report
RCM Liability/ITC Statement
The GST portal maintains an RCM Liability/ITC Statement that compares the liability reported in Table 3.1(d) with the credit claimed in Tables 4A(2) and 4A(3).
A negative balance can arise when the credit claimed is higher than the corresponding liability reported. According to the GSTN advisory dated 29 December 2025, such a balance can prevent the taxpayer from filing GSTR-3B until it is corrected.
Businesses should reconcile the statement before filing rather than increasing the liability or reversing credit only to bypass the portal validation.
RCM Calculation Example
Trilok Interiors is a GST-registered partnership in Jaipur. During June 2026, it records the following transactions.
| Transaction | Taxable Value | Rate Assumed | RCM Payable |
|---|---|---|---|
| GTA freight under the 5% RCM route | ₹40,000 | 5% | ₹2,000 |
| Taxable legal services | ₹25,000 | 18% | ₹4,500 |
| Commercial rent from an unregistered landlord | ₹60,000 | 18% | ₹10,800 |
| Taxable software service imported from Ireland | ₹12,000 | 18% IGST | ₹2,160 |
| Total | ₹19,460 |
Transaction
Taxable Value
Rate Assumed
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This example assumes that every transaction is taxable and the business is eligible to claim full ITC. The business should:
- Pay ₹19,460 through the electronic cash ledger.
- Report ₹19,460 in Table 3.1(d) as RCM liability.
- Report ₹2,160 of eligible imported-service ITC in Table 4A(2).
- Report ₹17,300 of eligible ITC on the other RCM transactions in Table 4A(3).
If the full ₹19,460 is eligible as ITC, it can reduce other GST liability. Any blocked or ineligible portion remains a business cost.
What to Do If RCM Was Missed
Start by identifying the affected invoice, return period, taxable value, applicable rate and document status. Do not correct several months using one combined estimate.
The unpaid tax and applicable interest may have to be calculated for each period. The business should also check whether a self-invoice was required and whether the related ITC is still available.
Circular 211/5/2024-GST provides a limited clarification for RCM supplies received from unregistered persons. Where the recipient was required to issue the invoice, the relevant financial year for the Section 16(4) ITC time limit is generally the financial year in which that self-invoice was issued. Tax payment, interest and the remaining ITC conditions continue to apply.
This clarification does not automatically protect every late RCM credit claim. It applies specifically to supplies from unregistered persons where the recipient must issue the invoice under Section 31(3)(f).
Older omissions should be reviewed with a GST professional before making payment or changing a return.
A Simple Monthly RCM Review
- Review freight bills and check whether a consignment note was issued.
- Check payments made to advocates and directors.
- Review commercial rent paid to unregistered landlords.
- Check foreign software, advertising, consulting and professional-service payments.
- Prepare the required self-invoices and payment vouchers.
- Match Table 3.1(d) with eligible credit in Tables 4A(2) and 4A(3).
- Review the RCM Liability/ITC Statement before filing.
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Conclusion
The reverse charge mechanism does not apply to every invoice without GST. It applies only when a transaction meets the conditions of a notified RCM entry.
For a growing business, the most important steps are to identify the transaction correctly, pay the tax through the cash ledger, prepare the required documents and report eligible credit in the correct GSTR-3B table.
A short monthly review of freight, rent, legal fees, director payments and overseas services can prevent missed tax, interest and return-filing problems.