RCM in GSTR-2B Reconciliation: Table 3.1(d) and 4A(3) Guide

In a compliant reverse charge rcm in gstr 2b reconciliation, you must match registered RCM invoices listed in GSTR-2B Table 4A(3) against both your accounting liability ledger and your monthly GSTR-3B cash discharge in Table 3.1(d). Unlike standard forward-charge purchases, RCM requires a dual-entry reconciliation: first, you must discharge the tax in cash through the Electronic Cash Ledger under Section 49(4); second, you can simultaneously claim that exact amount as Input Tax Credit (ITC) in Table 4A(3) of GSTR-3B in the same tax period, provided the inward supply is eligible under Section 16.

For the other causes of a GSTR-2B mismatch and how to fix each one, see our guide to common reconciliation errors.

Managing the Reverse Charge Mechanism (RCM) under Section 9(3) and Section 9(4) of the CGST Act is one of the most error-prone areas of monthly GST filing. While standard B2B purchases simply represent credit to be claimed, RCM creates an immediate cash payment obligation. A single mistake, such as failing to pay RCM tax in cash or claiming RCM credit without paying it, triggers automated scrutiny notices under Form DRC-01C, accompanied by mandatory 18% per annum interest under Section 50.

Where RCM Inward Supplies Live in GSTR-2B: Table 4 Breakdown

When you download your monthly GSTR-2B Excel or JSON file from the GST portal on the 14th, inward supplies subject to reverse charge are segregated into specific tables based on whether the supplier is registered or unregistered:

Notice the critical compliance gap: GSTR-2B only contains RCM invoices from registered suppliers who explicitly checked the "Reverse Charge = Yes" box in their GSTR-1. Unregistered GTA payments, unregistered advocate fees, and overseas import of services never appear in GSTR-2B. You cannot rely on GSTR-2B alone to calculate your full RCM cash liability.

The Two-Sided Accounting Rule: Why RCM Cannot Be Cleared with Existing ITC

The cardinal rule of RCM compliance under Indian GST law is found in Section 49(4) of the CGST Act read with Section 2(82): the credit ledger can pay only output tax, and output tax excludes tax payable under reverse charge, so RCM tax must be paid from the cash ledger.

Consider the following practical operational sequence:

1. Step 1 (Cash Discharge): You compute the total RCM liability across both registered supplies (from GSTR-2B Table 4A(3)) and unregistered supplies (from your purchase ledger). You enter this total in GSTR-3B Table 3.1(d). This must be paid 100% in cash through a challan (CPIN).
2. Step 2 (ITC Claim): Once the cash tax is discharged, the recipient becomes legally entitled to claim that exact amount as Input Tax Credit in GSTR-3B Table 4A(3) in the same return, assuming the service is used in the course or furtherance of business and not blocked under Section 17(5).

If your accounts team attempts to offset Table 3.1(d) using accumulated CGST/SGST/IGST credit balances from raw material purchases, the GST portal will reject the offset and demand a cash deposit before permitting return submission.

Real-World Reconciliation Example: Manufacturing Unit & GTA Transporter

Let us look at a realistic reconciliation scenario for an engineering firm in Pune, Kalyani Auto Components Ltd, reconciling its August 2026 books:

1. Inward Logistics Register (Internal Accounts)

• Transporter: Western Freight Carriers (Registered GTA, GSTIN: 27AABBW1234F1Z8)
• Consignment Notes (Lorry Receipts): 12 consignments during the month
• Total Freight Charges: ₹5,00,000
• GST Rate: 5% under RCM (the transporter has not opted to charge GST itself at 18% with ITC, the option that replaced 12% from 22 September 2025, see the GST Council FAQ)
• RCM Liability in Books: ₹5,00,000 × 5% = ₹25,000 (CGST ₹12,500 + SGST ₹12,500)

2. GSTR-2B Table 4A(3) Download on September 14

• Western Freight Carriers filed their GSTR-1 on September 11.
• Reported Freight Invoices: 10 out of 12 consignments (Taxable ₹4,20,000, Tax ₹21,000).
• Unreported Invoices: 2 consignments worth ₹80,000 (Tax ₹4,000) are missing from GSTR-2B.

3. The Filing Dilemma & Correct Compliance Path

How much RCM liability must Kalyani Auto Components declare and pay in Table 3.1(d) of GSTR-3B?

• Wrong Approach: Pay only ₹21,000 based strictly on GSTR-2B Table 4A(3). Result: Underpayment of tax by ₹4,000. When the audit or scrutiny catches the unregistered consignment slips, the firm faces demand under Section 73/74 with mandatory 18% interest and 10% penalty.
• Correct Compliant Approach: Declare and pay the full ₹25,000 in Table 3.1(d) in cash. In Table 4A(3), claim the full ₹25,000 as ITC. You do not lose the credit, but you ensure 100% statutory compliance under Section 9(3).

Common RCM Reconciliation Mismatches and Edge Cases

The Self-Invoicing Requirement under Section 31(3)(f)

Many finance teams mistakenly believe that simply recording an expense voucher in Tally or SAP completes their RCM duty. The law requires a specific physical or electronic document.

Under Section 31(3)(f) of the CGST Act, whenever a registered taxpayer receives taxable goods or services from an unregistered person subject to RCM, the recipient must issue a Tax Invoice (Self-Invoice) containing all particulars specified in Rule 46 of the CGST Rules. Under Section 31(3)(g), a Payment Voucher must be generated at the time of payment to the unregistered vendor.

During GST audit and departmental inspections under Section 65, tax officers routinely ask for the Self-Invoice Register for RCM. If your business paid RCM liability in GSTR-3B but cannot produce self-invoices, the department can challenge the validity of the ITC claimed in Table 4A(3).

Preventing Form DRC-01C Notices for RCM Variations

The GST portal continuously runs automated reconciliation algorithms comparing GSTR-2B against GSTR-3B. If the Input Tax Credit availed in Table 4A exceeds the credit available in GSTR-2B by more than a pre-defined limit, the system sends an intimation in Form DRC-01C (Part A) under Rule 88D (GSTN advisory).

Because RCM credit for unregistered suppliers (GTAs, advocates, overseas import) does not appear in GSTR-2B Table 4A(3), claiming it in GSTR-3B Table 4A(3) causes Table 4A(3) of GSTR-3B to exceed GSTR-2B. When responding to DRC-01C notices, pick the closest reason in the Part B drop-down and attach your self-invoice register and cash ledger payment proof.

How GSTR2BMatch Simplifies RCM Reconciliation

Reconciling RCM in standard spreadsheets using basic VLOOKUP is notoriously cumbersome because standard formulas fail to segregate forward-charge supplies from reverse-charge supplies. An accountant has to filter Table 3 B2B, then Table 4A(3) RCM, and manually verify flags.

GSTR2BMatch.in automatically segments your GSTR-2B download into dedicated compliance buckets:

• Dedicated RCM Bucket: Instantly isolates all records in GSTR-2B where the supplier marked Reverse Charge = Yes.
• Supplier Verification: Flags any regular supplier who accidentally switched their supply flag to RCM, allowing you to reject or hold the invoice in IMS before return filing.
• 100% Client-Side Confidentiality: Your legal fee registers, executive director payouts, and logistics expenditure are analyzed locally in your web browser. Nothing is uploaded to cloud databases.

Frequently Asked Questions (FAQ)

Can I claim ITC on RCM payments in the same month I pay the tax?

Yes. Under the GST framework, once RCM liability is paid in cash in Table 3.1(d) of GSTR-3B, you are entitled to claim that amount as Input Tax Credit in Table 4A(3) in the exact same GSTR-3B return, provided the underlying expense is eligible under Section 16.

Is RCM applicable on ocean freight for import of goods?

Following the landmark Supreme Court ruling in the Mohit Minerals case, IGST on ocean freight on a CIF (Cost, Insurance, and Freight) basis where the foreign seller contracts with the foreign shipping line cannot be levied under reverse charge. However, ocean freight paid directly by an Indian importer to a domestic or foreign shipping liner under FOB terms remains subject to GST under normal statutory provisions.

What is the time of supply for RCM services under Section 13(3)?

For services under reverse charge, the time of supply is the earlier of: (a) the date of payment as entered in the recipient's books or debited in the bank account, or (b) the date immediately following 60 days from the date of issue of invoice by the supplier. If payment is delayed past 60 days, liability arises on the 61st day.

Last checked: 21 October 2026. Sources: CGST Act section 49, GST Council FAQ on the 56th meeting (GTA rates), GSTN DRC-01C advisory.

Related guides

• GSTR-2B mismatch: common reconciliation errors and how to fix each one
• amended invoice in GSTR-2B: GSTR-1A amendments and IMS
• section 16(4) ITC time limit: the 30 November cutoff