Reverse Charge Mechanism GST: Who Pays, Invoice Format & Rules
Under normal GST, the supplier collects tax and pays it to the government. Under Reverse Charge Mechanism (RCM), the liability flips — the recipient (buyer) pays the GST directly. RCM applies in specific situations defined by the government, and the invoice format changes accordingly.
By Arjun Sharma· GST & Tax Compliance Specialist···Reviewed for GST accuracy
No signup required₹3.60 Cr+ invoice value processedTrusted by 300+ businessesFree forever
Free Tool — No Login Required
Create GST Invoices with Reverse Charge Notation
Auto CGST/SGST/IGST split
PDF in 30 seconds
No signup needed
Free forever
What you get:
GST-compliant PDF
Shareable invoice link
UPI QR on invoice
GSTIN validation
What is Reverse Charge Mechanism (RCM)?
RCM is a mechanism where the buyer (recipient of goods or services) is liable to pay GST to the government instead of the supplier. The supplier issues an invoice without collecting GST. The buyer then self-assesses and pays tax via GSTR-3B.
When Does RCM Apply?
Category
Examples
Section
Notified categories of supply
GTA (road transport), legal services by advocates, security services by unregistered persons
Section 9(3)
Purchase from unregistered supplier (notified goods)
Raw cotton, tobacco leaves
Section 9(4)
Import of services
Any service from abroad (foreign vendor)
Section 5(3) IGST Act
E-commerce operator
Specified services through aggregators
Section 9(5)
Skip the manual work
Try the Free GST Invoice Generator
Instead of manually formatting invoices in Excel, generate GST-compliant invoices instantly — automatic CGST, SGST & IGST calculation, PDF download, and shareable link.
GTA (road freight services) is the most common RCM scenario for businesses. If you hire a transporter to move goods, you (the buyer) are liable to pay 5% GST under RCM on the freight charges. The GTA issues an invoice without GST.
Example
Your Mumbai company hires GTA Logistics to transport goods. Freight = ₹50,000. GTA issues invoice for ₹50,000 (no GST). You pay GST on RCM: IGST 5% = ₹2,500 (if GTA is in another state) or CGST+SGST 2.5%+2.5% = ₹2,500. You declare this in GSTR-3B and pay ₹2,500 directly to the government.
RCM Invoice — What Changes
When RCM applies, the supplier's invoice must clearly state "Tax is payable on reverse charge basis." The supplier does NOT collect GST. The buyer must self-issue an invoice (called a "self-invoice") for the supply and pay GST.
Supplier invoice shows: no GST amount, text "Reverse charge applicable"
Buyer self-issues invoice with all mandatory fields + GST amount
Buyer pays GST in cash (RCM tax cannot be paid from ITC balance)
Buyer can then claim ITC on the RCM tax paid (subject to conditions)
Important
RCM tax must be paid in cash — you cannot use your Input Tax Credit balance to offset RCM liability. This is a common point of confusion.
ITC on RCM Tax Paid
The good news: you can claim the RCM tax you paid as Input Tax Credit in the same month. The ITC becomes available immediately in GSTR-3B after you declare and pay the RCM tax. You cannot carry forward unpaid RCM for later.
FAQs
Can I use ITC to pay RCM tax?
No. RCM tax must be paid in cash (via electronic cash ledger). You cannot offset RCM liability using your ITC balance.
Is there a threshold below which RCM does not apply?
For purchases from unregistered dealers (Section 9(4)), a per-day exemption of ₹5,000 applied earlier, but the current rules have removed this general exemption. For notified services (Section 9(3)), there is no threshold — RCM applies from the first rupee.
Does RCM apply on imports?
Yes. All services imported from outside India are subject to RCM under IGST Act Section 5(3). The Indian recipient registers and pays IGST under RCM on the import value.
What if I receive services from an unregistered freelancer?
Currently, Section 9(4) RCM on purchases from unregistered dealers applies only to specific notified goods (like raw cotton, tobacco). For services from unregistered freelancers, RCM generally does not apply unless the service falls under Section 9(3) notified list.
Why Businesses Stop Using Excel for GST Invoices
Manual GST calculation mistakes
One wrong CGST/SGST split or a misapplied rate triggers notices and ITC denial for your buyer.
Slow invoice creation
Copying last month's Excel file, updating dates, recalculating — 20 minutes for what should take 30 seconds.
Formatting breaks on every device
Excel invoices look different on every printer and PDF converter. Clients complain about unreadable layouts.
No easy sharing or payment link
Sending PDFs over WhatsApp with no way for clients to pay directly slows down collections.
Incorrect tax type (IGST vs CGST+SGST)
Excel can't auto-detect intra vs inter-state supply. Wrong tax type = ITC rejected for your buyer.
Disclaimer: The information in this article is for general informational purposes only and does not constitute professional tax, legal, or financial advice. GST rules and rates are subject to change. Consult a qualified CA or tax professional before making compliance decisions.
Generate Your RCM-Compliant Invoice
Create professional GST invoices instantly — no Excel, no manual calculations.