Provisional Refund for Inverted Duty Structure: Section 54(6)

Provisional Refund for Inverted explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.

GST 2.0 collapsed the rate structure to 5% and 18%. A great many finished goods moved down to 5% while the chemicals, packaging, machinery services and job work behind them stayed at 18%. The arithmetic result is an inverted duty structure at a scale the refund machinery was not built for — and until now, inverted-duty claimants had to wait for the full s.54(5) order while exporters got 90% up front.

Two changes fix that from different directions. One is already law.

Rule 91(2), substituted w.e.f. 01.10.2025, already changes how provisional refund is granted: the proper officer issues FORM GST RFD-04 on the basis of system identification and evaluation of risk, within seven days of acknowledgement, and the order need not be revalidated. Separately, section 155 of the Finance Act, 2026 extends s.54(6) provisional refund from zero-rated supplies to unutilised ITC under clause (ii) of the first proviso to s.54(3) — inverted duty — but that starts only from a date to be notified.

What section 54(6) does

Section 54(5) is the ordinary refund order: the officer examines the claim and sanctions what is due, within 60 days under s.54(7).

Section 54(6) is the fast lane. Notwithstanding s.54(5), the officer may refund 90% of the amount claimed on a provisional basis, then pass the final s.54(5) order after verification. As enacted, that fast lane applied only to a claim "on account of zero-rated supply of goods or services or both".

Section 155(a) of the Finance Act, 2026 inserts after those words: "or of unutilised input tax credit allowed under clause (ii) of the first proviso to sub-section (3)".

Clause (ii) of the first proviso to s.54(3) is precisely the inverted-duty limb — refund of ITC accumulated because the rate on inputs is higher than the rate on output supplies, other than nil-rated or fully exempt supplies, and other than supplies the Government notifies as excluded.

So an inverted-duty claimant will get the same 90% provisional treatment an exporter gets. After notification.

Rule 91(2) is already different, and that matters more today

The old Rule 91(2) required the proper officer to scrutinise the claim and the evidence, be prima facie satisfied, and then issue RFD-04 within seven days.

The substituted sub-rule, in force from 1 October 2025, reads:

"(2) The proper officer, on the basis of identification and evaluation of risk by the system, shall make an order in FORM GST RFD-04, within a period not exceeding seven days from the date of the acknowledgement under sub-rule (1) or sub-rule (2) of rule 90: Provided that the proper officer, for reasons to be recorded in writing, may not grant refund on provisional basis and proceed with the order under rule 92: Provided further that the order issued in FORM GST RFD-04 shall not be required to be revalidated by the proper officer."

Three practical shifts:

• "shall", not "may be satisfied". The default is grant.
• The trigger is the system's risk score, not a manual look at documents. Low-risk claims move without officer scrutiny.
• Withholding requires written reasons. An officer who does not want to grant provisionally must record why and go straight to the Rule 92 final order.
• No revalidation of RFD-04 — a recurring cause of delay is removed.

The five-year prosecution bar in Rule 91(1)

Unchanged, and easy to forget. Provisional refund is available only if the claimant has not been prosecuted for any offence under the Act or an existing law, in the five years immediately preceding the tax period of the claim, where the tax evaded exceeds ₹250 lakh.

Note the three limits carefully: it is prosecution, not investigation or a demand; the threshold is ₹2.5 crore of tax evaded; and the window is five years before the tax period of the claim, not five years before the application.

What an inverted-duty claimant should do now

The s.54(6) extension is not notified, so inverted-duty claims are still on the s.54(5) route today. What is available now:

• Rule 89(5)'s formula governs the amount. Refund of ITC = (Turnover of inverted rated supply × Net ITC ÷ Adjusted Total Turnover) − (tax payable on such inverted rated supply × Net ITC ÷ ITC availed on inputs and input services). Since the October 2024 amendment, input services and capital goods are in the second limb but Net ITC in the first limb remains inputs only. That asymmetry still suppresses the claim. The inverted duty refund formula worked through →
• Sequence your filings. Refund is claimed for a tax period; ensure GSTR-1 and GSTR-3B for the period are filed, since Rule 89 draws on them.
• Watch the notified exclusions. Certain supplies are notified as ineligible for inverted-duty refund under clause (ii) — construction services and specified fabrics historically. Check the current notification before building a claim.
• Keep the risk profile clean. Once s.54(6) is extended, whether you get 90% in seven days will turn on the system's view of you: return-filing regularity, GSTR-2B match, e-way bill consistency, past rejections.

Section 54(14): the ₹1,000 floor

The second half of section 155 amends s.54(14), which bars any refund under s.54(5) or (6) below ₹1,000. The amendment carves out claims "on account of goods exported out of India with payment of tax".

Small IGST-paid exports — a single low-value consignment, a sample shipment — currently produce a refund the system then refuses to pay because it is under a thousand rupees. That exclusion goes. Also awaiting notification.

Key takeaways

• Rule 91(2) is already live (01.10.2025): RFD-04 within seven days, on system risk evaluation, no revalidation.
• Refusing provisional refund now requires written reasons and a move to Rule 92.
• s.54(6) will extend the 90% provisional route to inverted duty claims — not yet notified.
• s.54(14) will lift the ₹1,000 floor for export-with-payment refunds — not yet notified.
• The Rule 91(1) prosecution bar (₹2.5 crore, five years) is unchanged.
• Rule 89(5)'s formula asymmetry on input services survives; it still caps the claim.

Read next

• Finance Act 2026: Every GST Amendment, and When Each One Starts
• Inverted Duty Refund Formula: Calculation and Examples
• GST Refund Process Step by Step: RFD-01 to RFD-06
• ITC Accumulation After GST 2.0 Rate Cuts

Disclaimer: Positions stated as on 5 September 2026, based on the Finance Act, 2026 and the ICAI Bare Law, 12th edition. Section 155 is not yet notified.