GST Refund: Inverted Duty Structure

What This Refund Covers

An inverted duty structure happens when the GST rate on the inputs you buy is higher than the GST rate you charge on the finished product you sell — common in footwear, textiles, fertilisers, and several manufacturing sectors. Because you can't reduce your output tax below what's actually due, the extra input credit has nowhere to go and simply accumulates in your electronic credit ledger, tying up working capital.

Rule 89(5) lets you claim that build-up back in cash: {(Turnover of inverted rated supply of goods and services) × Net ITC ÷ Adjusted Total Turnover} − tax payable on such inverted rated supply. The catch is that "Net ITC" here is restricted to input goods only — credit on input services and capital goods is excluded from the formula, even though you paid GST on them too.

Detail	Rule
Formula	(Inverted-rated turnover × Net ITC ÷ Adjusted Total Turnover) − Tax payable on inverted-rated supply
Net ITC scope	Input goods only — input services and capital goods are excluded
Relevant date	Due date of filing GSTR-3B for the period the claim relates to
Statement required	Statement 1 (calculation of refund amount claimed)

Be Prepared

Documents Required

Statement 1

Sets out the refund calculation — turnover figures, Net ITC, and the resulting claim amount.

GSTR-3B & GSTR-2B

For the relevant period — used to verify both your turnover split and the ITC actually available to you.

Invoice-Wise Input Goods ITC

A working paper isolating ITC on input goods from input services and capital goods, since only the former qualifies.

CA Certificate / Self-Declaration

Rule 89(2) declaration on unjust enrichment — self-declaration under ₹2 lakh, CA/CMA certificate above it.

Avoid the Common Traps

Why This Claim Gets Rejected

Including Ineligible ITC

Adding ITC on input services or capital goods to the "Net ITC" figure — the most frequent calculation error in this category.

Wrong Adjusted Total Turnover

Misapplying the definition of adjusted total turnover, which excludes certain exempt and non-GST supplies.

Not Reconciled With GSTR-2B

Claiming ITC that doesn't actually appear in your GSTR-2B for the period, triggering a query or deficiency memo.

FAQs

Can I claim refund on ITC of input services under inverted duty structure?

No. Current rules restrict the Rule 89(5) refund formula to ITC on input goods only — ITC on input services and capital goods is excluded from the "Net ITC" figure used in the calculation, even though you may have paid GST on them.

How often can I claim an inverted duty structure refund?

You can file a claim for each tax period (or by clubbing periods within the same financial year), subject to the 2-year time limit measured from the due date of filing GSTR-3B for that period.

Which industries typically face inverted duty structure?

Common examples include footwear, textiles and fabrics, fertilisers, mobile phone manufacturing, and railway locomotives — sectors where raw material GST rates are higher than the rate charged on the finished product.

ITC Piling Up Every Month?

Share your GSTR-3B data on WhatsApp and we'll calculate exactly what's refundable under Rule 89(5).

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