What Is Reverse Charge (RCM) in GST and How Does an ERP Handle It?

What reverse charge means

Normally, the supplier charges GST on the invoice and pays it to the government. Under reverse charge, that responsibility moves to the buyer. The supplier does not charge GST on the invoice for that supply, and the buyer accounts for the tax directly. For a trader, this shows up on the purchase side, and it is easy to miss because the bill in front of you shows no GST.

When RCM applies

RCM applies to categories of goods and services notified by the government, and, in certain cases, to purchases from unregistered suppliers. The lists are set by notification and are amended from time to time, so do not rely on a fixed list from an article or an ERP. Ask your CA which of your regular purchases fall under reverse charge, and review the list when notifications change.

What the buyer has to do

When a purchase is under reverse charge, three things follow.

• Work out the tax on the value of the supply at the applicable rate
• Pay that tax; reverse-charge tax is paid in cash rather than by using existing credit
• Report it in the return: inward supplies liable to reverse charge appear in GSTR-3B, and the related input tax credit, where eligible, is claimed separately

Why RCM causes errors in practice

The errors are mostly about visibility. The supplier’s bill has no GST on it, so the purchase looks like an ordinary zero-tax bill. If nobody flags it at entry, the tax liability is missed, the credit is missed, and the return is wrong. The fix is a habit and a system: identify reverse-charge purchases when the bill is entered, not at month end.

How TradeFlow records reverse charge

In TradeFlow, RCM is a flag you set on the purchase bill. Nothing is inferred silently.

• A purchase bill carries a reverse-charge flag, a reverse-charge rate that you enter, and a setting for whether the credit is eligible
• The reverse-charge tax is calculated as the taxable value multiplied by that rate, and stored with the bill’s GST record
• The GSTR-3B working shows the reverse-charge liability for inward supplies liable to reverse charge, and the eligible credit for inward supplies liable to reverse charge, from your books
• The split into CGST, SGST or IGST is derived from the states involved when the record is read

What TradeFlow suggests, and what it does not decide

TradeFlow can raise a reverse-charge review exception on a bill, for example when the supplier is unregistered or the HSN code is in a list of notified categories configured in the system. That is a prompt to look, not a decision. TradeFlow does not decide on its own that a purchase is under reverse charge, and the rate is the one you enter, so the responsibility for classifying the purchase stays with you and your CA.

Wholesalers and distributors: a practical routine

For a business with many purchases each month, a short routine keeps RCM under control.

• Agree with your CA which regular purchases are under reverse charge
• Flag those bills when they are entered, with the correct rate
• Clear any reverse-charge review items on the exceptions list before month end
• Check the reverse-charge figures in the GSTR-3B working against your books

Preparation, not filing

TradeFlow prepares the return data; the returns themselves are filed outside TradeFlow, by you or your CA. Paying reverse-charge tax is also done outside TradeFlow. What the system gives you is the record: which purchases, what tax, and what credit, ready for review.

Where TradeFlow fits

TradeFlow is an ERP for Indian traders, wholesalers, distributors and dealers, with GST applied from invoices and bills, reverse charge on purchase bills, and GSTR-1, GSTR-2B and GSTR-3B working data. To see how it works with your own purchases, book a demo and bring three typical bills.

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