"Reverse charge means my supplier handles the GST": what Section 9(3) actually says

Ask ten small business owners who pays GST on a lawyer's invoice and at least seven will say the lawyer does. The reasoning sounds fine — the advocate raised the bill, so the advocate collects the tax. It is exactly backwards. Under reverse charge, the person receiving the supply is the taxable person, and if you have been treating your advocate's or your goods transporter's zero-GST invoice as "GST-free", you are sitting on an undeclared liability that carries interest at 18% per annum from the date it was due.

What the law actually says

Reverse charge is defined in Section 2(98) of the CGST Act 2017 as the liability to pay tax by the recipient of goods or services instead of the supplier. It is not an administrative convenience and it is not optional. Two provisions create it:

Section 9(3), CGST Act 2017 — the Government notifies specific categories of supply where the recipient pays. The operative notifications are Notification No. 4/2017–Central Tax (Rate) for goods and Notification No. 13/2017–Central Tax (Rate) for services, both amended many times since. For inter-State supplies the mirror provisions are Section 5(3) and Section 5(4) of the IGST Act 2017.

Section 9(4), CGST Act 2017 — supplies received by a notified class of registered persons from an unregistered supplier. Since the 2019 amendment this is a narrow, notified list rather than the sweeping catch-all it was in 2017-18. Its main live application is Notification No. 7/2019–CT(R): a promoter procuring cement or a shortfall in the 80% input requirement for a real estate project.

The services most commonly caught by Section 9(3) in practice are: goods transport agency services where the GTA has not opted for forward charge; legal services from an individual advocate or a firm of advocates to a business entity; services of a director to the company in any capacity other than employment; import of services from outside India; security services (supply of security personnel) by a non-body-corporate to a registered person; renting of a motor vehicle designed for passengers where the supplier is not a body corporate and charges 5%; and, since 10 October 2024, renting of commercial immovable property by an unregistered landlord to a registered person under Notification No. 09/2024–CT(R).

Two changes people are still getting wrong. Sponsorship services left reverse charge on 16 January 2025 under Notification No. 07/2025–CT(R) when the supplier is a body corporate or partnership firm — the event organiser now raises a GST-charged invoice and the sponsor takes credit normally. And metal scrap supplied by an unregistered person to a registered buyer came into reverse charge from 10 October 2024 under Notification No. 06/2024–CT(R). If your compliance sheet was built in 2023, both entries are wrong today.

Three further sections make reverse charge sharper than most people expect:

Section 24(iii) — a person required to pay tax under reverse charge must register, irrespective of turnover. The Rs.20 lakh and Rs.40 lakh thresholds in Section 22 do not protect you. A consultant with Rs.9 lakh of receipts who pays a foreign software subscription is liable to register.

Section 31(3)(f) and Rule 47A — where you receive a reverse-charge supply from an unregistered person, you issue the invoice (a self-invoice), and since 1 November 2024 Rule 47A (inserted by Notification No. 20/2024–Central Tax) requires it within 30 days of receiving the goods or services. Section 31(3)(g) separately requires a payment voucher at the time of payment. No self-invoice, no valid document under Rule 36, and your input tax credit claim is exposed.

Section 49(4) — the balance in the electronic credit ledger may be used only for output tax. Reverse charge liability is not output tax in that sense; it must be discharged in cash through the electronic cash ledger. You cannot set an accumulated credit balance against it. This is the single most expensive misunderstanding in the whole area, because businesses sitting on large credit balances assume they have nothing to pay.

Practical implications for Indian businesses

Time of supply is earlier than you think. For goods under Section 12(3), it is the earliest of the date of receipt of goods, the date of payment as entered in your books or debited to your bank (whichever is earlier), or 31 days from the supplier's invoice date. For services under Section 13(3), it is the earlier of the date of payment or 61 days from the supplier's invoice date. That 61-day rule catches everyone who holds an advocate's invoice for a quarter before paying: the liability arose on day 61, not on the payment date, and interest under Section 50(1) at 18% runs from the 20th of the following month.

A worked example. A Bengaluru private limited company with Rs.3.2 crore turnover receives in July 2026: a GTA freight bill of Rs.80,000 (GTA on reverse charge, 5%), an advocate's invoice of Rs.1,50,000 (18%), sitting fees of Rs.2,00,000 to two non-executive directors (18%), a foreign SaaS subscription of USD 1,200 (about Rs.1,03,000) at 18% IGST on import of service, and rent of Rs.60,000 for a commercial office from an unregistered individual landlord (18%). Reverse charge payable in cash for July: Rs.4,000 + Rs.27,000 + Rs.36,000 + Rs.18,540 + Rs.10,800 = Rs.96,340. Every rupee of it goes out of the electronic cash ledger by 20 August 2026, even if the company is carrying Rs.15 lakh of unutilised credit. Rs.92,340 of it comes back as ITC in the same GSTR-3B — the GTA Rs.4,000 does not sit outside credit merely because the transporter's rate is 5% without ITC; what is genuinely not claimable is anything blocked by Section 17(5), so check the motor-vehicle and construction entries before assuming a clean wash.

The cash-flow point that gets missed. Because the payment is in cash and the credit comes back in the same return, reverse charge is usually neutral in tax but never neutral in working capital in the month it starts. A business that discovers three years of unpaid reverse charge pays the tax plus 18% interest in cash, and the ITC for the older years may already be time-barred under Section 16(4) — you pay the tax and lose the credit. That asymmetry is why reverse charge shows up so often in Section 73 demand notices.

Composition dealers get the worst of it. A composition taxpayer under Section 10 must pay reverse charge at the normal rate on notified inward supplies, and cannot claim any ITC. For them, reverse charge is a pure cost.

GTA has a choice; you should check which one they made. A goods transport agency may opt for forward charge by filing Annexure V (now a declaration on the portal for the financial year). If your transporter has opted in, their invoice carries 12% GST and you must not pay reverse charge on it — paying it anyway means paying the same tax twice with only one credit. Ask for the declaration once a year and keep it on file.

Step-by-step: what to do

• Pull a vendor list of every zero-GST or "not applicable" invoice for the last 12 months. Reverse charge hides in invoices that show no tax at all — freight bills, advocate bills, director payments, foreign software receipts, watchman agency bills, unregistered landlord rent.
• Tag each line against Notification 13/2017–CT(R) as amended. Confirm the supplier's constitution, because several entries turn on whether the supplier is a body corporate (security services, renting of motor vehicle, sponsorship).
• Collect the GTA Annexure V declaration for every transporter, or confirm in writing that they have not opted for forward charge.
• Compute the time of supply for each line using Section 12(3) or 13(3). Do not use the payment date by default; test the 31-day and 61-day fallbacks.
• Issue self-invoices within 30 days under Rule 47A for every unregistered-supplier reverse-charge receipt, and a payment voucher under Section 31(3)(g) at payment. Number them in a separate series so they are traceable in an audit.
• Report the liability in GSTR-3B Table 3.1(d) — "Inward supplies liable to reverse charge". Report the corresponding credit in Table 4(A)(2) for imports and 4(A)(3) for all other reverse-charge inward supplies. Table 3.1(d) and Table 4(A)(3) should reconcile month on month; a permanent gap is what a Section 61 scrutiny notice picks up.
• Pay in cash by the 20th of the following month (or the 22nd/24th under QRMP for the quarterly return, though the liability itself is settled monthly via PMT-06).
• Reconcile annually in GSTR-9 Table 4G against your books before filing, and fix shortfalls through DRC-03 voluntarily — Section 73(5) lets you settle a genuine short payment with interest and no penalty if you move before a notice is issued.

FAQ

Can I use my input tax credit balance to pay reverse charge?
No. Section 49(4) restricts the electronic credit ledger to output tax. Reverse charge liability must be paid in cash through the electronic cash ledger, and only then does the corresponding credit become available in the same month's GSTR-3B if it is not blocked by Section 17(5).

My turnover is Rs.12 lakh, below the registration threshold. Am I still liable?
Yes, and you must register. Section 24(iii) mandates registration for any person liable to pay tax under reverse charge, overriding the Section 22 thresholds entirely. The most common trigger for small consultants is an imported service — a foreign software subscription, an overseas advertising platform, or an offshore contractor.

I paid the advocate three months late. When did the liability arise?
On the 61st day from the date of the advocate's invoice, under Section 13(3), because that is earlier than your payment date. Interest under Section 50(1) at 18% per annum runs from the day after the due date of the GSTR-3B for that month until you actually pay.

Does reverse charge apply to rent I pay for my shop?
Only if the premises are commercial and the landlord is unregistered and you are registered — that is the position from 10 October 2024 under Notification No. 09/2024–CT(R). Residential premises let out to a registered person for business use is a separate entry, also on reverse charge. Residential premises taken by an unregistered individual for personal residence attracts no GST at all.

Closing

Reverse charge is not a technicality; it is the entry point for a large share of GST scrutiny notices precisely because businesses under-report it silently for years and the liability compounds with interest. If you have never reconciled Table 3.1(d) against your zero-GST purchase ledger, that reconciliation is the highest-value hour you will spend on GST this quarter.

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