Indirect Tax Laws and Practice · Anti-profiteering

Anti-Profiteering under Section 171 of the CGST Act

Updated 11 October 2026 · Fact-checked

Anti-profiteering under Section 171 means a supplier must pass on any reduction in GST rate or the benefit of input tax credit to the recipient through a commensurate cut in price. If the supplier keeps the benefit, the amount kept is 'profiteered'. To solve questions, compute the benefit due, compare it with the price cut actually given, and apply the consequences.

Understand Anti-Profiteering under Section 171 of CGST Act

GST is meant to lower the tax burden on the final consumer. A rate cut or a new input tax credit benefit lowers the supplier's tax cost. If the supplier keeps the price the same, the supplier gains and the consumer does not. Section 171 stops this.

Section 171(1) says any reduction in the rate of tax on any supply of goods or services, or the benefit of input tax credit, shall be passed on to the recipient by way of commensurate reduction in prices. The word 'commensurate' means the price cut must match the benefit. A token cut is not enough.

Section 171(2) lets the Central Government, on the Council's recommendation, constitute an Authority, or empower an existing one, to examine whether the input tax credit availed or the rate reduction has actually resulted in a commensurate price reduction. The Authority exercises the powers and functions that are prescribed (Section 171(3)). The Explanation to the section says the term 'Authority' includes the Appellate Tribunal.

The Act also defines profiteered: the amount determined on account of not passing on the benefit of the rate reduction or of input tax credit to the recipient by way of commensurate price reduction. Under Section 171(3A), if the Authority concludes that a registered person has profiteered, that person is liable to a penalty of ten per cent of the amount profiteered. No penalty applies if the profiteered amount is deposited within thirty days of the date of the Authority's order.

The proviso to Section 171(2) allows the Government, on the Council's recommendation, to notify a date after which the Authority will not accept any request for examination. So the mechanism has a cut-off for new requests.

Key rules to remember

Core obligation: Benefit of rate reduction or ITC → passed to recipient through commensurate price reduction; Section 171(1). Applies to supplies of goods or services or both.
Profiteered amount: Profiteered amount = Benefit that should have been passed on − Benefit actually passed on; A working form of the statutory definition of profiteered. The Act gives the definition in words, not as an equation.
Penalty: Penalty = 10% × Profiteered amount; Section 171(3A). Not leviable if the profiteered amount is deposited within 30 days of the Authority's order.
Interest on amount not passed on: Interest at 18% per annum from the date of collection of the higher amount to the date of return; Rule 133(3)(b). Applies when the Authority orders return of the amount to the recipient.
Where recipient not identifiable or does not claim: 50% of the amount (with 18% interest) to the Fund under Section 57; remaining 50% to the Fund under Section 57 of the concerned State; Rule 133(3)(c). 'Concerned State' includes the Union Territory in respect of which the order is passed.
Time limits: DG investigation: 6 months from reference (extendable by up to 3 more months); Authority's order: 6 months from receipt of the DG report; Rule 129(6) and Rule 133(1). The extension needs reasons recorded in writing and is as allowed by the Authority.
Screening and Standing Committee: Examination of application: 2 months, extendable by up to 1 month; Rule 128(1) and (2). Extension needs reasons recorded in writing and is as allowed by the Authority.

How to solve Anti-Profiteering under Section 171 of CGST Act questions

Use this order for any question on anti-profiteering, whether it is theory, a short case or a numerical.

1Identify the trigger: a reduction in the GST rate, or a new or increased input tax credit benefit. Quote Section 171(1).
2Work out the benefit that should reach the recipient. For a rate cut, find the tax saved per unit. For ITC, find the extra credit per unit.
3Compare it with the price reduction actually given. Check whether the price cut is commensurate.
4State the profiteered amount as the shortfall. If there is none, say there is no profiteering.
5Apply the consequences under Section 171(3A) and Rule 133(3): price reduction, return with 18% interest, deposit in the Funds if the recipient is not identifiable, penalty of 10%, and possible cancellation of registration.
6Check the penalty proviso: if the profiteered amount is deposited within 30 days of the order, no penalty.
7If the question is on procedure, trace the path: application, Screening or Standing Committee, DG investigation under Rule 129, Authority's order under Rule 133.
8End with a clear conclusion in one line.

Quickest way: Shortfall-first method

When to use it: For MCQs and short numericals where you must find the profiteered amount or the penalty quickly.

Write down the benefit due per unit and multiply by the units sold.
Subtract the price reduction already passed on. The result is the profiteered amount.
Take 10% of that amount for the penalty, unless the amount is deposited within 30 days of the order.
If interest is asked, take 18% per annum on the amount from the date of collection to the date of return.
Check each MCQ option against the exact figures in the Act and Rules: 10%, 18%, 30 days, 6 months, 3 months, 2 months, 1 month, 50%.

Common mistakes in Anti-Profiteering under Section 171 of CGST Act

Applying anti-profiteering only to rate cuts.
Students remember the phrase 'reduction in rate' and forget the second limb.
Fix: Section 171(1) covers both a reduction in rate of tax and the benefit of input tax credit.
Confusing the 10% penalty with the 18% interest.
Both numbers appear in the same topic and look alike in revision notes.
Fix: Penalty of 10% is in Section 171(3A) and is on the profiteered amount. Interest of 18% is in Rule 133(3)(b) and runs from the date of collection of the higher amount.
Charging penalty even when the amount is deposited promptly.
Students overlook the proviso to Section 171(3A).
Fix: No penalty is leviable if the profiteered amount is deposited within thirty days of the date of the Authority's order.
Treating any price cut as compliance.
Students read 'reduction in prices' and skip the word 'commensurate'.
Fix: Compare the price cut with the benefit. Only a cut matching the benefit satisfies Section 171(1).
Sending the whole unclaimed amount to one Fund.
Students recall only the Section 57 Fund.
Fix: Under Rule 133(3)(c), 50% goes to the Fund under Section 57 and the remaining 50% to the Fund under Section 57 of the concerned State, where the eligible person does not claim return or is not identifiable.
Mixing up who does what in the process.
Committees, the DG and the Authority all appear in the Rules.
Fix: Committees examine applications for prima facie evidence (Rule 128). The DG investigates (Rule 129). The Authority decides and orders (Rule 133).

Worked examples

Example 1

A registered supplier sold 2,000 units of a product at ₹500 per unit. After a notified reduction in the GST rate, the tax per unit fell by ₹30, but the supplier kept the price at ₹500. The Authority finds profiteering. Compute the profiteered amount and the penalty, assuming the amount is not deposited within 30 days of the order.

Show the solution

Benefit due per unit = ₹30 (the tax saved that should reduce the price).
Benefit passed on = ₹0, as the price is unchanged.
Profiteered amount per unit = ₹30 − ₹0 = ₹30.
Total profiteered amount = 2,000 × ₹30 = ₹60,000.
Penalty under Section 171(3A) = 10% × ₹60,000 = ₹6,000.
The Authority may also order a price reduction and return of ₹60,000 to recipients with interest at 18% per annum from the date of collection (Rule 133(3)).

Answer: Profiteered amount = ₹60,000. Penalty = ₹6,000, along with return of the amount and 18% interest as ordered.

Example 2

Explain the steps by which an anti-profiteering complaint moves from application to final order, and state what the Authority may order if it finds that the benefit was not passed on.

Show the solution

Application: a written application goes to the Standing Committee, or first to the State level Screening Committee if the issue is of a local nature (Rule 128).
Screening: the Screening Committee, if satisfied that Section 171 has been contravened, forwards the application with recommendations to the Standing Committee. The time is two months, extendable by up to one month for reasons recorded in writing.
Standing Committee: it checks the accuracy and adequacy of the evidence for a prima facie case, within two months, extendable by up to one month. If satisfied, it refers the matter to the Director General of Anti-profiteering (Rule 129(1)).
Investigation: the DG issues a notice to the interested parties, collects evidence and completes the investigation within six months, extendable by up to three months. The DG then sends a report to the Authority (Rule 129).
Order: the Authority determines within six months of receiving the DG's report whether the benefit was passed on. It must hear interested parties who request it in writing (Rule 133(1) and (2)).
Powers on finding profiteering: the Authority may order a reduction in prices, return of the amount with 18% interest, deposit of the amount in the Funds where the recipient is not identifiable or does not claim, a penalty as specified in the Act, and cancellation of registration (Rule 133(3)).

Answer: The complaint passes through the Screening Committee (if local), the Standing Committee, the DG's investigation and the Authority's order. On finding profiteering, the Authority may order price reduction, return with 18% interest, deposit in the Funds, penalty and cancellation of registration.

Exam tips

Memorise the numbers as a set: 10% penalty, 30 days, 18% interest, 50:50 split, 6 months for the DG, 3-month extension, 6 months for the Authority's order, 2 months for the committees.
In case-based MCQs, first check whether the benefit came from a rate cut or ITC. Then test whether the price cut is commensurate.
In written answers, quote Section 171(1) first, then link the facts to it. Marks come from application, not recall.
For numericals, show the shortfall working line by line, then penalty, then interest if asked. Close with a recommendation or conclusion.
Remember the Authority includes the Appellate Tribunal for the purposes of Section 171.

Practice questions from Anti-profiteering

Anti-Profiteering under Section 171 of CGST Act in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

CS ProfessionalAnti-Profiteering Measure (Section 171)

Anti-Profiteering under Section 171 of CGST Act: frequently asked questions

What is anti-profiteering under Section 171 of the CGST Act?

It is a provision requiring suppliers to pass on any rate reduction or input tax credit benefit to the recipient through a commensurate price reduction. An Authority examines whether this has been done. If not, it can order corrective action and penalty.

What is the penalty for profiteering?

Under Section 171(3A), the penalty is ten per cent of the amount profiteered. No penalty is leviable if the profiteered amount is deposited within thirty days of the date of the Authority's order.

What can the Authority order under Rule 133?

It may order a reduction in prices and return of the amount not passed on, with interest at 18% from the date of collection. It may also order deposit in the Funds where the recipient is not identifiable or does not claim, impose penalty and cancel registration.

Who investigates an anti-profiteering complaint?

The Standing Committee, after finding prima facie evidence, refers the matter to the Director General of Anti-profiteering. The DG investigates under Rule 129 and reports to the Authority, which then decides under Rule 133.