Under GST, the supplier ordinarily collects tax and deposits it with the government. The Reverse Charge Mechanism (RCM) reverses that principle. In specified cases, the recipient becomes liable to pay GST instead of the supplier.

RCM is governed principally by Sections 9(3) and 9(4) of the CGST Act and remains one of the more scrutinised GST areas, because errors are often procedural and easily identifiable during audit and reconciliation.

Where RCM Commonly Applies

  • Goods Transport Agency (GTA) services, subject to prescribed conditions.
  • Legal services provided by advocates or law firms to business entities.
  • Director services and specified remuneration structures.
  • Sponsorship services received by body corporates or partnership firms.
  • Import of services and foreign vendor arrangements, including overseas consulting, cloud services, and software subscriptions.

Where Businesses Commonly Make Errors

  • Assuming RCM applies only to GTA freight while overlooking legal services, director-related payments, and imported digital services.
  • Paying RCM liability through Input Tax Credit. Reverse charge liability must be discharged through the electronic cash ledger. ITC, where eligible, becomes available only after payment.
  • Ignoring self-invoicing, payment vouchers, and supporting documentation requirements.
  • Treating purchases from unregistered suppliers as automatically covered under Section 9(4), which no longer operates as a blanket reverse charge rule.

The Compliance Consequence

Missed RCM liability is rarely a one-time error. Because these expenses often recur, exposure compounds through unpaid tax, interest under Section 50, and reconciliation mismatches. The issue frequently surfaces during scrutiny or audit rather than at the time the expense is booked.

RCM Is a Vendor Review Issue, Not Just a GST Issue

Reverse charge is fundamentally a vendor classification and payment review exercise. Businesses that periodically review freight, legal expenses, director payments, and overseas subscriptions generally identify exposure early. Those that treat RCM as a year-end checklist often discover the liability only after interest and reconciliation issues have accumulated.