Reverse Charge GST Checklist for Small Business India

Reverse charge GST in India means the recipient, not the supplier, pays the tax on specified goods and services. This checklist covers when RCM applies, what you must do to stay compliant, and the common errors to avoid.

What Is Reverse Charge Under GST?

Under normal GST, the supplier collects tax and deposits it with the government. Under reverse charge, the liability shifts to the buyer. This happens in two situations:

Supply from an unregistered dealer to a registered person for specified categories (Section 9(4) – currently suspended except for certain supplies).
Specified goods and services listed by the government (Section 9(3)) – e.g., legal services by an advocate, import of services, GTA, and certain goods like cashew nuts, tobacco leaves, and scrap.

For small businesses, the most common trigger is buying from an unregistered person for goods like scrap or used goods, or receiving services like legal fees or transport by GTA. You must pay GST on these at the applicable rate, even if the supplier does not charge it.

RCM Compliance Checklist – Step by Step

Identify if the supply falls under RCM. Check the CBIC notification list for Section 9(3) and 9(4). If in doubt, ask a tax professional.
Get the supplier’s GSTIN (if registered). For unregistered suppliers, you still need their name, address, and a valid invoice.
Issue a self-invoice for every RCM supply from an unregistered person. This invoice must contain all required fields (like a normal invoice).
Pay GST by the due date – usually the 20th of the following month (or 22nd/24th for quarterly filers under QRMP).
Claim ITC on the same RCM tax if the goods/services are used for business. You can take credit in the same month you pay the tax.
Report RCM in GSTR-1 – show the supply in the appropriate table (e.g., 4B for RCM supplies).
Report in GSTR-3B – fill Table 3.1(d) for RCM liability and Table 4(B) for ITC.
Maintain proper records – keep self-invoices, payment proofs, and the supplier’s details.

Common Mistakes Small Businesses Make

Ignoring RCM on unregistered purchases. Many buy from local vendors without GST and assume no tax is due. That is wrong for specified goods.
Not issuing self-invoices. Without a self-invoice, you cannot claim ITC and the tax becomes a cost.
Paying tax late. Interest at 18% per annum applies from the due date.
Claiming ITC in the wrong month. ITC for RCM can only be claimed when the tax is paid, not earlier.
Confusing RCM with TDS/TCS. RCM is a tax liability, not a withholding. They are different.

How to Pay RCM Tax and Claim ITC

When you pay RCM, you use the same GST portal. You create a challan for the RCM amount (tax + interest if late). After payment, the system reflects the liability in your electronic liability register. To claim ITC, you must have the self-invoice and the payment proof. The ITC is credited to your electronic credit ledger, which you can use to offset your output GST liability.

For example, if you pay ₹1,000 as RCM GST, you can claim ₹1,000 as ITC in the same month, provided the expense is for business. This means the effective cash outflow is zero if you have output tax to pay. But if you have no output tax, you will get a refund only if you export or have inverted duty structure.

RCM on Import of Services

Import of services is always subject to reverse charge. If you receive a service from outside India (e.g., software subscription, consultancy), you must pay GST on it at the applicable rate. The place of supply is India, and you are the recipient. You must also issue a self-invoice for such imports. This is a common area where small businesses forget to comply, especially for online services.

RCM vs. Forward Charge – Key Differences

Aspect	Forward Charge	Reverse Charge
Who pays tax	Supplier	Recipient
Invoice	Supplier issues	Recipient issues self-invoice
ITC	Recipient claims on supplier’s invoice	Recipient claims on self-invoice after paying tax
Common examples	Most goods and services	GTA, legal services, unregistered dealer supplies

Frequently Asked Questions

Do I need to pay RCM if I buy from an unregistered dealer for my shop?

Only for specified goods like scrap, cashew nuts, etc. For other goods, Section 9(4) is currently suspended, so you do not pay RCM. But always check the latest notification as rules change.

Can I claim ITC on RCM paid?

Yes, if the goods or services are used for business. You must pay the tax first and then claim ITC in the same month. The ITC is subject to normal conditions like receipt of goods and valid invoice.

What is a self-invoice and how do I make one?

A self-invoice is a document you issue to yourself when you purchase from an unregistered supplier. It should have a unique number, date, supplier’s details, description, and tax amount. You can generate it in your accounting software or manually.

What happens if I miss paying RCM?

You will be liable to pay the tax along with interest (18% per annum) and possibly a penalty. The tax officer may also levy a penalty up to 10% of the tax amount or ₹10,000, whichever is higher.

Is RCM applicable on rent paid to a registered landlord?

No, rent is not under RCM. However, if the landlord is unregistered and the rent exceeds ₹5,000 per day, RCM may apply under certain conditions. Generally, rent is forward charge unless the landlord is unregistered and the service is specified.

How do I report RCM in GSTR-3B?

In Table 3.1(d) you report the RCM liability (tax payable). In Table 4(B) you report the ITC claimed. The values should match your self-invoices.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

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