If your business buys inputs that are taxed at a higher GST rate than the rate you charge on your finished goods, your Input Tax Credit (ITC) keeps piling up and you can never fully use it. The law lets you claim this stuck money back. You file Form GST RFD-01 under clause (ii) of the proviso to Section 54(3) of the CGST Act, 2017, read with Rule 89(5), within two years of the relevant date. This is the inverted-duty-structure refund.
Quick answer: An inverted duty structure means GST on your inputs is higher than GST on your output. The unused ITC piles up. Claim it back by filing Form GST RFD-01 on the GST portal under Section 54(3)(ii), using the Rule 89(5) formula, within two years of the relevant date. Refund is limited to ITC on input goods only.
An inverted duty structure happens when the GST rate on the raw materials and goods you buy is higher than the GST rate on the product you sell. Because you pay more tax on inputs than you collect on output, your output tax is not enough to absorb all your input credit. The leftover ITC accumulates in your electronic credit ledger and stays unusable unless you claim it as a refund.
A plain example: a manufacturer buys plastic granules and chemicals taxed at 18 percent, and sells a finished product taxed at 5 percent. The 18 percent paid on inputs cannot be fully set off against the 5 percent collected on sales. Month after month, credit builds up. That accumulated credit is exactly what Section 54(3)(ii) lets you recover.
This is different from two other refunds people confuse it with. A refund of money sitting unused in your electronic cash ledger is a separate process, explained in our guide to the GST excess cash ledger refund. And a refund blocked because your supplier did not upload an invoice is an ITC-mismatch problem, not an inverted-duty claim.
The right to this refund comes from clause (ii) of the proviso to Section 54(3) of the Central Goods and Services Tax Act, 2017. It allows a refund of unutilised input tax credit where the credit has accumulated because the rate of tax on inputs is higher than the rate of tax on output supplies, other than nil-rated or fully exempt supplies.
The amount is computed under Rule 89(5) of the CGST Rules, 2017. The application is made in Form GST RFD-01 on the common portal, and the refund is processed by the jurisdictional GST officer. You must file within two years from the relevant date, as set out in Section 54(1).
Rule 89(5) was amended with effect from 5 July 2022 (Notification No. 14/2022-Central Tax) and clarified by CBIC Circular 181/13/2022. The current formula is:
Maximum Refund Amount = {(Turnover of inverted rated supply of goods and services x Net ITC) / Adjusted Total Turnover} minus {Tax payable on such inverted rated supply of goods and services x (Net ITC / ITC availed on inputs and input services)}.
In plain terms, the first part works out how much of your total credit relates to your inverted sales. The second part subtracts the output tax you should have paid on those sales, scaled down in the same proportion in which you took credit on inputs and input services. This second leg is what the 2022 amendment changed, so businesses no longer lose out on the input-services portion the way they did under the old version.
What is excluded:
When my neighbour Dr. Shrawan Kumar Pathak helped a small fabric-trader friend file his first inverted-duty claim, the application bounced because input-services credit had been added into Net ITC. Once they stripped it down to input goods only and matched the turnover to GSTR-3B, the refund came through. The lesson stuck: keep Net ITC clean.
No. Under Rule 89(5), Net ITC covers ITC on input goods only. Credit on capital goods and on input services is excluded from the inverted-duty refund formula, so that portion cannot be recovered through this route.
You must file within two years from the relevant date under Section 54(1) of the CGST Act. The portal usually will not block a late filing, so it is your responsibility to apply on time.
No. The inverted-duty refund returns accumulated input tax credit caused by a higher input rate. A cash ledger refund returns money you actually paid into the electronic cash ledger but did not need. They use different categories in RFD-01.
Nil-rated and fully exempt output supplies do not qualify. Certain goods are also specifically notified by the government as barred from the inverted-duty refund, so confirm your product is eligible before filing.
First, confirm your input rate is genuinely higher than your output rate and that your product is not on the barred-goods list. Then reconcile your input-goods ITC with your GSTR filings, prepare Statement 1 and 1A, and file Form GST RFD-01 well inside the two-year window. If your problem is actually unused cash, use the cash ledger refund route instead. New to GST entirely? Start with how to apply for GST registration. For your wider rights as a citizen dealing with public authorities, see The RTI Playbook.