Section 171 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.
The obligation in sub-section (1) has not gone anywhere. What has changed is who examines it, and from what date new requests stop being accepted.
Section 171(1): any reduction in rate of tax on any supply, or the benefit of input tax credit, shall be passed on to the recipient by way of commensurate reduction in prices. 171(2): the Central Government may, on the Council's recommendations, by notification constitute an Authority, or empower an existing Authority, to examine whether credits availed or a rate reduction have actually resulted in a commensurate reduction in price — with a proviso allowing the Government to specify the date from which the Authority shall not accept any request for examination, "request for examination" being defined as a written application by an applicant. 171(3A) provides for a penalty where the Authority concludes a registered person has profiteered. And s.109(5), second proviso: s.171(2) matters shall be examined or adjudicated only by the Principal Bench of the Appellate Tribunal.
The obligation, and what it actually requires
Two triggers:
- a reduction in the rate of tax on a supply; or
- the benefit of input tax credit — that is, credit becoming available where it previously was not.
One requirement: the benefit shall be passed on to the recipient by way of commensurate reduction in prices.
"Commensurate" does the work, and the section supplies no formula. What has been examined in practice is whether the price reduction matches the tax benefit, product by product and SKU by SKU, rather than being netted against cost increases or absorbed into margin.
The recurring positions:
- netting against cost inflation — that input costs rose, so the net price is unchanged;
- passing the benefit in another form — a larger pack, an extra quantity, a scheme;
- selective pass-through — reducing prices on some SKUs and not others;
- timing — passing the benefit from a later date than the rate change.
Each has been contested, and the safe position is the simple one: reduce the price on each affected supply, from the effective date, by the amount of the benefit, and document it.
The sunset, and what it does and does not do
The proviso to s.171(2): the Government may, by notification on the Council's recommendations, specify the date from which the said Authority shall not accept any request for examination.
The Explanation: "request for examination" means the written application filed by an applicant requesting an examination.
Three things follow.
It closes the door on new applications, from the notified date.
It does not repeal sub-section (1). The obligation to pass on the benefit remains in the Act. What ends is the acceptance of new requests for examination.
It does not affect matters already in. Applications filed before the notified date, and proceedings already on foot, continue.
So the correct statement of the position is: the duty subsists; the complaint route closes on the notified date; and pending matters run to conclusion before the empowered Authority.
Who examines it now
Section 171(2) allows the Government to constitute an Authority or to empower an existing Authority constituted under any law.
Section 109(1), as it now stands, refers to the Appellate Tribunal being the authority referred to in s.171(2), if so notified under that section.
And the second proviso to s.109(5) is decisive on forum: the matters referred to in s.171(2) shall be examined or adjudicated only by the Principal Bench.
The consequences:
- an anti-profiteering matter is heard at New Delhi, wherever the taxpayer is;
- it is not heard by a State Bench;
- and from the Principal Bench, an appeal lies directly to the Supreme Court under s.118(1)(a) — there is no High Court stage. Section 109 → Section 118 →
That last point matters for how a case is built: the Principal Bench is the last fact-finding forum, so the pricing evidence must be complete there.
Why GST 2.0 made this live again
GST 2.0, effective 22.09.2025, restructured the rates into two principal slabs of 5% and 18% with a 40% demerit rate, and wound down the compensation cess.
For a great many goods and services that was a rate reduction — and s.171(1) applies to any reduction in rate of tax, without qualification or time limit.
So the obligation was engaged across the economy on a single date. For any business whose outward rates fell on 22.09.2025, the questions are:
- was the price reduced on each affected supply, from that date?
- was the reduction commensurate with the rate change, computed per SKU or per service line?
- is there a contemporaneous record of the computation and the decision?
- were existing contracts repriced, and does the change-in-law clause deal with it? GST rate change and contracts →
And there is a second limb: for businesses whose input tax credit position improved — because a blocked credit became available or an exempt output became taxable — the benefit of input tax credit limb is engaged independently of any rate change. GST 2.0 rate structure →
The documentation to keep
Whether or not a request for examination can still be made, the obligation in sub-section (1) is part of the Act, and the record is what answers a question about it later:
- the pre-change and post-change price for each affected SKU or service line;
- the computation of the tax benefit per unit;
- the date from which the reduced price took effect, matched to the rate change date;
- MRP revisions and the labelling position, where pre-packaged and labelled goods are involved; Pre-packaged and labelled →
- credit notes issued for supplies in transit at the change date;
- the board or management approval recording the decision and its basis;
- the treatment of existing contracts and any repricing correspondence;
- for the credit limb, the quantification of the credit benefit and how it was passed on.
The cost of keeping it is a few hours. The cost of not having it, if the question arises, is reconstructing pricing decisions across a catalogue years later.
Key takeaways
- Section 171(1) requires a rate reduction or the benefit of input tax credit to be passed on by a commensurate reduction in prices.
- The proviso to s.171(2) allows a notified sunset date for accepting new requests for examination.
- The sunset closes the complaint route; it does not repeal the obligation or affect pending matters.
- Section 109(5), second proviso: s.171(2) matters are examined or adjudicated only by the Principal Bench.
- From the Principal Bench, the appeal lies directly to the Supreme Court — no High Court stage.
- GST 2.0 engaged the obligation across the economy on 22.09.2025, so the pricing record for that date matters.
Read next
- GST 2.0: The Two-Rate Structure Explained
- Section 109: GSTAT Benches, and What Only Delhi Can Hear
- GST Rate Change, Contracts and Change-in-Law Repricing
- Section 118: Appeal to the Supreme Court and the Principal Bench
Disclaimer: Positions stated as on 5 September 2026, based on the CGST Act as amended to 31 March 2026 (ICAI Bare Law, 12th edition). The sunset date for accepting requests for examination, and the empowerment of an Authority under section 171(2), operate by notification and must be checked against the current position.