What Is RCM in Tally? Complete Guide to Reverse Charge Mechanism

RCM (Reverse Charge Mechanism) is a GST rule where the buyer pays GST instead of the seller. In Tally, you enable it via F11 Features, mark suppliers as RCM-applicable, and the software automatically reverses input tax credit and files correct returns.

Understanding RCM: The Basics

RCM stands for Reverse Charge Mechanism. It is a fundamental GST compliance rule in India where the liability to pay GST shifts from the supplier to the buyer. In a normal GST transaction, the seller collects GST from the buyer and remits it to the government. Under RCM, this responsibility reverses, and the buyer becomes liable to pay GST directly to the government on behalf of the supplier.

This mechanism applies to specific categories of goods and services notified by the Central Board of Indirect Taxes and Customs (CBIC). When you purchase these items or services, you must account for GST on your side, not rely on the seller to do so. TallyPrime, as a GST-enabled accounting software, provides built-in features to handle RCM transactions correctly and ensure your returns are filed accurately.

Why RCM Exists in the GST Framework

The Reverse Charge Mechanism was introduced to prevent tax evasion and ensure better tax compliance. In certain sectors, unregistered suppliers may not charge or remit GST, creating a revenue leakage. By shifting the payment responsibility to the buyer, the government ensures that GST is collected and accounted for, even if the supplier is unregistered or non-compliant.

RCM also applies when both the buyer and seller are registered but the supply falls under RCM-notified categories. This dual-registration scenario is common in sectors like construction, scrap trading, and specialized services. The mechanism protects the tax base and ensures a level playing field for compliant businesses.

Common Goods and Services Under RCM

The CBIC regularly updates the list of supplies subject to RCM. As of 2025, the major categories include:

• Scrap and waste materials
• Coal and minerals
• Cement
• Steel and iron products
• Motor vehicles and spare parts
• Fertilizers and pesticides
• Transportation and logistics services
• Renting of immovable property
• Work contracts and construction services
• Certain business support services
• Telecom and financial services (in specific cases)

If your business deals with any of these items, you must understand RCM rules and configure TallyPrime accordingly. Failure to apply RCM when required can result in penalties and GST demand notices.

How RCM Works in Practice

Let us walk through a practical example. Suppose ABC Manufacturing Ltd. (registered under GST) purchases 10 tonnes of scrap metal from XYZ Scrap Traders (unregistered). The invoice value is Rs 1,00,000 plus 18% GST, totaling Rs 1,18,000.

Under normal GST rules, XYZ would charge GST. But since XYZ is unregistered, they cannot charge GST. Under RCM, ABC is liable to pay the GST directly. So ABC pays Rs 1,00,000 to XYZ and Rs 18,000 as GST to the government. ABC cannot claim this Rs 18,000 as input tax credit because the supply is subject to RCM.

In TallyPrime, when you create a purchase voucher for this transaction, you mark the party as RCM-applicable. The software automatically calculates GST on the buyer side, reverses the input credit, and ensures the correct amount flows into your GSTR-3B return.

RCM vs. Normal GST: Key Differences

Understanding the differences between RCM and normal GST is crucial for correct accounting and compliance:

Aspect	Normal GST	RCM
Who pays GST?	Supplier (seller)	Buyer (recipient)
Input Tax Credit (ITC)	Buyer can claim ITC	Buyer cannot claim ITC
GSTR-1 filing	Seller files outward supplies	Buyer reports in Schedule 2 of GSTR-3B
Cost to buyer	Lower (ITC benefit)	Higher (no ITC benefit)
Applicable supplies	All supplies unless RCM notified	Only RCM-notified goods and services

Configuring RCM in TallyPrime

To handle RCM transactions in TallyPrime, you must first enable GST features. Go to Gateway of Tally, press F11 (Features), and ensure GST is enabled. Once GST is active, you can configure RCM at the party level.

Create or edit a ledger for a supplier. Under the ledger details, you will find an option to mark the party as RCM-applicable. In TallyPrime 6.x and later, this is typically found under Party Type or GST-related fields. When you mark a party as RCM, all purchase vouchers created against that party will automatically apply RCM rules.

Alternatively, you can apply RCM at the voucher level. When creating a purchase voucher, if the supplier is not marked as RCM by default, you can override and apply RCM for that specific transaction. This flexibility is useful when you occasionally purchase RCM-notified goods from a supplier who is not exclusively an RCM vendor.

Impact on Input Tax Credit

One of the most important aspects of RCM is its impact on input tax credit. Under normal GST, when you purchase goods or services, the GST paid is available as input tax credit, reducing your GST liability. Under RCM, this benefit is not available.

When you record an RCM purchase in TallyPrime, the software automatically reverses the input credit. The GST amount is recorded as part of the purchase cost, not as a recoverable credit. This increases the effective cost of the purchase and should be factored into your pricing and profitability analysis.

For example, if you purchase goods worth Rs 1,00,000 at 18% GST under normal rules, the cost to you is Rs 1,00,000 (you recover Rs 18,000 as ITC). Under RCM, the cost is Rs 1,18,000 (no ITC recovery). This 18% difference is significant and affects your margins.

RCM in Purchase Vouchers

When creating a purchase voucher for RCM supplies in TallyPrime, the process is straightforward. Enter the party name, item details, and amount. If the party is marked as RCM-applicable, TallyPrime will automatically calculate GST and reverse the input credit. The voucher will show the GST amount separately, and the ledger posting will ensure the GST is not credited to your input credit account.

You can verify the RCM treatment by checking the voucher details. The GST should appear as a liability (payable to the government), not as an asset (recoverable credit). When you save the voucher, TallyPrime updates your GST liability register and prepares the data for GSTR-3B filing.

It is important to ensure that the item being purchased is actually subject to RCM. If you mistakenly apply RCM to a non-notified supply, your GST compliance will be incorrect, and you may face penalties. Always cross-check the CBIC's latest RCM list before configuring suppliers.

RCM and GSTR-3B Filing

When you file GSTR-3B, RCM supplies are reported separately. The GST amount paid under RCM appears in Schedule 2 of GSTR-3B, not in Schedule 4 (input tax credit). This ensures that the tax authority knows you have paid GST as a buyer under RCM, and it does not get mixed with regular input credit claims.

TallyPrime automatically populates GSTR-3B with RCM data if you have configured RCM correctly. When you generate the GSTR-3B report (Alt+G, then GSTR-3B, or via Gateway of Tally > Display More Reports > GST Reports), the software will show RCM GST separately. You simply need to review the data for accuracy and file it with the tax authorities by the 20th of the next month (for regular taxpayers).

RCM and GSTR-1 Reporting

If you are a supplier and you have sold goods or services subject to RCM, you must report these in GSTR-1 (outward supplies return) with a specific RCM indicator. This tells the tax authority that the buyer is liable for GST, not you.

In TallyPrime, when you create a sales voucher for an RCM-applicable supply, you mark it as such. The software will tag the invoice with an RCM flag. When you generate GSTR-1, these invoices will appear with the RCM indicator, and the tax authority will cross-match them with the buyer's GSTR-3B filing.

Common RCM Mistakes to Avoid

Many businesses make errors when handling RCM in Tally. The most common mistakes include:

1. Applying RCM to non-notified supplies, resulting in incorrect GST treatment.
2. Claiming input tax credit on RCM purchases, which is not allowed and can trigger penalties.
3. Not updating the RCM list as CBIC notifies new supplies, leading to compliance gaps.
4. Failing to report RCM GST in GSTR-3B, causing mismatches with the seller's GSTR-1.
5. Mixing RCM and normal GST for the same supplier without proper documentation.
6. Not maintaining supporting documents (invoices, payment receipts) for RCM transactions.

To avoid these mistakes, stay updated with CBIC notifications, configure TallyPrime correctly, and reconcile your GST reports regularly using the TSS (Tally Support Services) features for real-time guidance.

RCM for Unregistered vs. Registered Suppliers

RCM applies in two scenarios: when buying from an unregistered supplier and when buying from a registered supplier for RCM-notified goods. The treatment is the same in TallyPrime, but the context differs.

When buying from an unregistered supplier under RCM, you pay GST because the supplier is not registered and cannot charge it. When buying from a registered supplier for RCM-notified supplies, both you and the supplier are registered, but the rule mandates that you (the buyer) pay GST. In both cases, TallyPrime handles the accounting identically, reversing input credit and recording GST as a liability.

RCM and Compliance Audits

During GST audits, tax authorities closely examine RCM transactions. They verify that RCM was applied only to notified supplies, that input credit was not claimed, and that GSTR-3B was filed accurately. Maintaining clear documentation and using a compliant system like TallyPrime reduces audit risk.

TallyPrime's audit trail and detailed GST reports make it easy to demonstrate compliance. You can generate RCM-specific reports, cross-check GSTR-3B with your ledgers, and provide evidence of correct GST treatment. This transparency is invaluable during inspections.

RCM and the Future of GST Compliance

As GST compliance becomes increasingly digital and automated, RCM handling in software like TallyPrime will become even more critical. The government is moving towards real-time GST reporting and automated reconciliation. Ensuring your Tally setup is RCM-compliant today will make future transitions smoother.

TallyPrime's regular updates (available through TSS subscriptions) ensure that RCM rules and notified supplies are always current. If you use TallyPrime on Cloud or with TSS active, you benefit from automatic updates to GST rules, reducing the risk of non-compliance.

Getting Help with RCM in Tally

If you are unsure about RCM rules or how to configure them in TallyPrime, do not hesitate to seek expert help. Global IT Care, a Tally 3 Star Certified Partner in Purnea, Bihar, has been guiding businesses on GST and RCM compliance since 2010. Our team can audit your current Tally setup, identify RCM gaps, and configure TallyPrime correctly for your business.

Whether you are new to RCM or need to fix existing misconfigurations, we provide hands-on training and support. We also help you understand the latest CBIC notifications and update your Tally system accordingly. Contact us today to ensure your RCM compliance is bulletproof and your GST filings are accurate. Reach out to Global IT Care at +91 75469 00951 or visit our office in Purnea to discuss your RCM and GST compliance needs. Our certified team is ready to help you master RCM in Tally and file confident, error-free GST returns.