GST 2.0 Rollout in Two Waves: What Starts 1 Nov 2026, What Waits Till April 2027

Phase 1 (process reforms): Tentatively from 1 Nov 2026 — no law change needed
Phase 2 (law amendments): Targeted 1 Apr 2027 — needs CGST/SGST changes
In Phase 2: Arrest powers, prosecution thresholds, e-way bill, ₹10,000 SCN floor
Pending cases: Nothing automatic — a recommendation is not yet law

The short version

The GST 2.0 reforms from the 57th GST Council meeting (8 October 2026) will arrive in two waves. Reforms that don't need a law change start being rolled out — tentatively — from 1 November 2026, in phases as the system is readied.
Changes that require amendments to the Central and State GST Acts are targeted for 1 April 2027 — these include the removal of arrest powers, rationalised prosecution thresholds, e-way bill changes and the ₹10,000 minimum threshold for show-cause notices.
Phase 1 is the taxpayer-friendly stuff you can look forward to soon: faster, largely automated refunds (including 90% provisional sanction in low-risk cases), simpler registration for small e-commerce sellers, and return-filing changes to tighten ITC. Revised return forms open for public feedback from 1 November.
Key legal point: a Council recommendation is not operative law. As things stand, the arrest and prosecution amendments are not yet in force, and pending cases do not close automatically — whether earlier matters get the benefit depends on the final legislation and its transitional clauses.

We now have a clearer sense of when the big GST 2.0 reforms will actually land. Speaking on 22 October 2026, a senior CBIC official confirmed that the decisions from the 57th GST Council meeting will be implemented in phases — the process and system reforms first, tentatively from 1 November 2026, and the changes that need Parliament and the State legislatures to amend the GST laws from a target date of 1 April 2027. That split matters enormously in practice, because it decides what changes for your business this quarter versus next financial year — and it answers a question many taxpayers already in proceedings are anxiously asking: does any of this help me now?

Two waves, not one switch

The crucial distinction the CBIC has drawn is between reforms that can be done by rules, notifications and system changes (which the government can implement quickly) and reforms that change the GST Act itself (which need legislative amendment and are therefore slower). As the official put it, wherever Act amendments are not required, the reforms will be implemented as soon as possible — tentatively from 1 November 2026. The rest are targeted for 1 April 2027.

Phase 1 — from 1 November 2026 (no law change needed)

These are the compliance-easing, liquidity-friendly measures. They'll be introduced in phases depending on the system changes each requires, so not everything switches on exactly on 1 November — but this is the window.

Reform	What changes
Faster refunds	Automated sanction of eligible refunds; excess balance in the electronic cash ledger refunded automatically in eligible cases
Provisional refunds	In low-risk cases, 90% of the claimed refund sanctioned provisionally based on system risk-assessment — covering exporters and inverted-duty-structure claims
Quicker acknowledgement	Time to acknowledge a refund application or issue a deficiency memo cut from 15 days to 10; if neither happens, the application is treated as acknowledged
Simpler registration	Eligible small online sellers can register in a State using an e-commerce warehouse as their principal place of business; clearer document lists; easier form and portal (≈9.5 lakh small sellers expected to benefit)
Return / ITC changes	Return-filing changes to confirm that tax declared and passed on as ITC has actually been paid
Revised return forms	New GST return forms opened for public feedback from 1 November 2026 (actual rollout planned alongside Phase 2)

Why Phase 1 is good news for cash flow

For exporters and businesses stuck with an inverted duty structure, the refund changes are the headline. Faster acknowledgement and 90% provisional sanction in low-risk cases mean working capital is released sooner instead of sitting locked with the department. One caveat worth noting: automated sanctioning is expected to apply to future claims, not to refund claims already pending — so don't assume your existing stuck refund jumps the queue automatically.

Phase 2 — targeted 1 April 2027 (needs Act amendments)

These are the structural and enforcement changes that need the CGST and State GST Acts to be amended, so they can't be done by notification alone. The Council has set 1 April 2027 as the target.

Reform	Nature of change
Arrest provisions	Proposed removal / narrowing of the GST arrest power (Section 69)
Prosecution thresholds	Rationalisation of prosecution thresholds under Section 132 (reported ₹5 crore threshold)
E-way bill	Modifications to e-way bill provisions
Show-cause notices	A minimum monetary threshold of ₹10,000 before an SCN can be issued

The point everyone misses: a recommendation is not yet law

Here's where careful reading matters. The decisions of 8 October 2026 are Council recommendations. They do not, by themselves, amend Sections 69 and 132 of the CGST Act. Those are part of primary legislation, and amending them requires an Act of Parliament (and corresponding State amendments), followed by commencement. The Ministry of Finance has itself clarified that the Council's recommendations acquire legal force only through the relevant statutory amendments and notifications.

So, as the position stands today, the arrest and prosecution changes are not operative law. Until they commence, the existing provisions continue to govern investigations, prosecution and arrest. And the announced target of 1 April 2027 should not be treated as the legally operative commencement date of the Section 69/132 changes unless and until the legislation is actually enacted and brought into force.

Does any of this help people already in GST proceedings?

This is the question weighing on taxpayers facing criminal complaints under Section 132 for amounts below the proposed ₹5 crore threshold, or being prosecuted under provisions proposed to be deleted. The honest answer: it's legally unsettled, and nothing terminates automatically.

A few principles frame it:

No express withdrawal. The recommendations do not say that criminal prosecutions already filed will stand withdrawn or abated. Absent that, automatic termination of a pending prosecution is legally doubtful.
Section 6 of the General Clauses Act, 1897. Where a provision is repealed or omitted, liabilities and proceedings already incurred under the earlier law are ordinarily preserved — unless a different intention appears in the new legislation. The department can lean on this to argue an earlier offence survives.
The beneficial-law principle cuts the other way. In criminal law, a later provision reducing punishment may, in appropriate cases, be applied for the benefit of an accused. So an accused can argue that continuing a sub-₹5 crore prosecution is inconsistent with the amendment's intent — but it's an argument, not an automatic right.
Article 20(1) doesn't settle it. The Constitution bars creating offences retrospectively and increasing punishment, but it does not itself guarantee the retrospective benefit of every later reduction.

A revealing contrast: the ₹10,000 notice threshold

At the same meeting, for notices and appeals under Sections 73, 74 and 74A involving tax below ₹10,000, the Council expressly recommended that pending proceedings be decided as though the new threshold had always existed — an explicit grant of retrospective relief. No such express transitional provision has been announced for pending criminal prosecutions under Section 132. Where the Council wanted to help existing cases, it said so expressly — which makes the silence on Section 132 legally significant, though not conclusive.

What about arrests already made?

A separate distinction applies to Section 69. Once the omission of the arrest power becomes operative, officers could no longer exercise that power — including in investigations relating to earlier years. But an arrest lawfully made before the amendment would not automatically become invalid, and a person already in judicial custody would not automatically be released just because the arrest power was later withdrawn — custody, bail and warrants are governed by separate criminal procedure. It has also been reported that the Centre and States are working on a standard operating procedure for existing arrest cases; until an official SOP or statutory framework is issued, that remains a reported development, not operative law.

What taxpayers and professionals should do now

Treat 1 Nov 2026 as "watch and prepare," not "everything changes." Phase 1 rolls out in stages. Track which refund and registration reforms have actually gone live before relying on them.
Line up refund claims. With faster acknowledgement and 90% provisional sanction coming for low-risk cases, get documentation and reconciliations clean so eligible claims sail through — especially for exporters and inverted-duty businesses.
Don't assume pending prosecutions or arrests are over. Until the Act is amended and in force, the existing law governs. Keep pursuing existing legal defences on their own merits.
Map each pending case. Note the financial year, the exact Section 132 clause invoked, the amount involved, whether a complaint is filed, whether cognizance is taken, and the stage. That's what will determine any argument once the law commences.
Re-examine once the law is enacted. When the amendment commences, check its commencement provision, any transitional or saving clauses, and the interplay with Section 6 before advising on discharge, quashing or reduced punishment.

Frequently asked

When do the GST 2.0 reforms actually start?

In phases. Process reforms that don't need a law change are tentatively rolled out from 1 November 2026. Reforms needing CGST/SGST Act amendments — arrest provisions, prosecution thresholds, e-way bill changes, the ₹10,000 SCN floor — are targeted for 1 April 2027.

What can I expect from 1 November 2026?

Faster and largely automated refunds (including 90% provisional sanction in low-risk cases), quicker refund acknowledgement (15 days down to 10), simpler registration for small e-commerce sellers, and return-filing changes to tighten ITC. Revised return forms also open for public feedback from this date.

Are GST arrest powers already gone?

No. The removal is a Council recommendation that needs a law amendment to take effect, targeted for 1 April 2027. Until the amendment is enacted and brought into force, the existing arrest provisions continue to apply.

I'm facing a Section 132 prosecution below ₹5 crore — does the new threshold free me?

Not automatically. A Council recommendation doesn't amend the law, and pending prosecutions don't terminate on their own. You may have an arguable basis for relief once the amendment commences, but it will depend on the final statutory wording, transitional/saving clauses and Section 6 of the General Clauses Act. Get your case assessed on its specific facts and stage.

Will my already-pending refund be auto-sanctioned?

Automated sanctioning is expected to apply to future claims, not to refund claims already pending. Don't assume an existing stuck refund is cleared automatically — but do get it reconciled and ready.

Planning around the GST 2.0 rollout?

efiletax helps you time refund claims, get ready for the Phase 1 process changes, and assess where pending notices or proceedings stand — so you act on what's actually in force, not just what's been announced.

Talk to our GST team

Disclaimer: This article summarises publicly reported statements (22 October 2026) on the phased implementation of the GST reforms recommended at the 57th GST Council meeting (8 October 2026), and professional commentary on how the proposed Section 69/132 amendments may affect pending cases. All rollout dates are tentative targets and the reforms described are recommendations that acquire legal force only through the relevant statutory amendments and notifications; as at the date of publication several are not yet operative law. The discussion of pending investigations, prosecutions and arrests is general in nature, reflects an unsettled legal position, and is not legal advice — the outcome in any case depends on the final enacted legislation, its transitional and saving provisions, and the facts and stage of that case. Please consult a qualified professional before acting. Talk to efiletax if you need help.