
Observations Every Business Should Review Before Filing GSTR-9 and GSTR-9C - Reverse Charge : The Expense Ledger Audit Officers Read Differently
“Reverse charge is rarely missed in the return first. It is missed in the expense ledger first.”
RCM exposure often hides in ordinary expenses,not in a separate ‘GST payable’ ledger.
The audit issue
Businesses frequently miss reverse-charge tax on legal services, goods transport agency services, director-related services, import of services, specified security services, sponsorship and other notified supplies. The error normally arises because the accounts team books the expense but no one maps the vendor type and nature of service to the reverse-charge notifications. Since RCM is generally discharged in cash, unused input tax credit does not cure the original non-payment.
Legal framework
Sections 9(3) and 9(4) of the CGST Act and sections 5(3) and 5(4) of the IGST Act provide the charging framework, read with the applicable notifications. Sections 12 and 13 govern time of supply. Section 31(3) and the invoice rules may require a self-invoice and payment voucher in relevant cases. Credit is governed by section 16 after the tax is paid, subject to eligibility.
What the officer will examine
During audit, officers scan legal and professional fees, freight inward and outward, security charges, sitting fees, commission, foreign software and subscriptions, management charges, ocean-related costs and payments to government bodies. They test vendor constitution, location, contract terms, tax invoices, foreign remittances and whether the recipient itself was liable. They also compare RCM disclosed in GSTR-3B with ITC claimed and with expense ledgers.
What to correct before GSTR-9 and GSTR-9C
Create an RCM matrix before filing GSTR-9: expense head, vendor category, notification entry, place of supply, taxable value, rate, month of liability, cash payment and month of credit. Review every foreign-currency expense separately for import-of-service implications. Reconcile annual RCM liability with Table 3.1(d) of GSTR-3B, the electronic cash ledger and eligible ITC. Do not claim credit merely because an expense appears in books; confirm that the reverse-charge tax was actually discharged.
Closing takeaway
The most expensive RCM mistake is often a small recurring expense repeated for twelve months. A focused annual review converts the expense ledger into a defensible compliance file before an officer does the same exercise for you.
Practical audit scenario
Suppose legal fees, GTA freight and an overseas software subscription are spread across three expense ledgers. The monthly GST checklist reviews only a ledger named ‘RCM expenses’, so two categories are missed throughout the year. During audit, the officer filters vendor PAN, country and narration and calculates liability month by month. Apart from tax, delayed cash payment can produce interest, while ITC may be available only after proper discharge and subject to conditions. A year-end expense-ledger scan should therefore use vendor and transaction attributes, not merely the accounting label selected when the voucher was booked.
The safest approach is to identify and document the issue before the annual return is filed. Once an audit communication is issued, correction options may narrow and every explanation must be supported by records. The review should therefore record the factual position, legal conclusion, amount involved, return impact, corrective action, owner and supporting documents. Material positions should be approved, while immaterial differences should still be catalogued so repeated small errors do not become a pattern across tax periods. This converts a year-end reconciliation into a defensible audit file.
Suggested CTA: Before finalising your annual return, consider an independent GST reconciliation and health check focused on the records an audit officer is most likely to test.
Essential Checks Before You File GSTR-9 & 9C : Part 2
This is Part 2 of our 15-part series uncovering critical GST checks every business should complete before filing GSTR-9 and GSTR-9C or facing a departmental audit. Stay tuned for the next post.
Disclaimer : This article is for informational purposes only and should not be construed as legal or professional advice. Taxpayers should consult their tax advisor based on the facts of their specific case before taking any action.

