GST Central Tax Weekly Tracker — W35 2026 (24–30 August 2026)

This week (24–30 August 2026): CBIC issued no Central Tax, Integrated Tax, UT Tax or Compensation Cess notification, no GST circular and no GST instruction. Its one GST-substantive act was Circular No. 37/2026-Customs of 27 August 2026, fixing how IGST is paid — and input tax credit preserved — on raw sugar converted from Advance Authorisation to the tariff rate quota. GSTR-3B for July 2026 fell due 24 August for Category 2 States and Union Territories.

Top Developments This Week

1. Circular No. 37/2026-Customs: paying IGST on an AA-to-TRQ conversion without losing the credit

What it is: the instrument is Circular No. 37/2026-Customs, F. No. 140605/6/2026-DBK, issued by the Drawback Division of the Central Board of Indirect Taxes and Customs and dated 27 August 2026 (eOffice generation stamp 27 August 2026, 17:49). It follows two Directorate General of Foreign Trade instruments of 20 August 2026 — Notification No. 31/2026-27, amending the import policy condition for raw sugar under Exim code 170114 of Chapter 17 of ITC(HS) 2022 Schedule I, and Public Notice No. 27/2026-27, setting the allocation modalities for the 10 lakh MT tariff rate quota together with a one-time conversion route from the Advance Authorisation (AA) Scheme into the Tariff Rate Quota (TRQ) Scheme.

The problem it solves is narrow and mechanical, and it is a GST problem rather than a customs one. An importer who brought raw sugar in under an Advance Authorisation paid no IGST, because the authorisation exempts it. Converting that consignment to the TRQ route means the IGST becomes payable after the goods have already been cleared. Paying it late is easy; paying it in a way that still yields input tax credit is not, because credit under the CGST Act follows what reaches the GSTN portal from the Customs system.

What the circular directs at the port of import:

• The AA holder approaches the concerned assessment group at the port of import with the relevant details.
• The assessment group cancels the out-of-charge, records the reason in remarks, and re-assesses the bill of entry so as to charge the tax.
• Payment is made against an electronic challan generated in the Customs EDI System.
• The port of import then makes a notional out-of-charge on the Customs EDI System, so that the IGST amount and its date of payment — the relevant date — transmit to the GSTN portal.
• Interest liability on account of that IGST payment stands waived.
• The procedure may be applied once to any given bill of entry.

Two further paragraphs carry the real weight. Input tax credit on such a re-assessed bill of entry is available subject to the eligibility and conditions in Sections 16, 17 and 18 of the CGST Act, 2017 and the rules made under them — so the ordinary credit tests still apply, and the circular does not create an entitlement where one would not otherwise exist. And the Board expressly directs that the IGST must not be paid through the Voluntary Payment Challan module, because that process does not transfer the relevant details between Customs and GSTN adequately for the importer to take credit.

Why it matters: this is the rare procedural circular where using the wrong payment button forfeits the credit rather than merely delaying it. The Voluntary Payment Challan is the intuitive route for a taxpayer who realises tax is owed on a past clearance, and it is precisely the route the Board has closed. The interest waiver is the other point worth reading twice: it is expressed as attaching to the IGST payment made under this procedure, not as a general dispensation, so the waiver travels with the prescribed steps. Chief Commissioners are directed to issue a Public Notice and Standing Order locally, which means the operational detail at each port will differ and should be read before the assessment group is approached.

Corpus refs: none — the corpus holds no anchor for IGST on imports, Advance Authorisation or TRQ conversion. See the gap note below. CIR_251_2025 is cited only as the nearest indexed circular on credit-note and ITC mechanics, not as authority for this procedure.

Link: Circular No. 37/2026-Customs (27 August 2026) | Notification No. 30/2026-Customs (21 August 2026)

2. A verified-empty GST week — and a 2026 GST instruction that earlier trackers missed

What it is: the CBIC-side GST week was empty, and it can be stated positively. Read on 5 September 2026, the CBIC tax-information repository's notification stream records exactly one instrument dated inside 24–30 August 2026: Notification No. 71/2026-Customs (N.T) of 25 August 2026, fixing tariff values for edible oils, brass scrap, areca nut, gold and silver. Its circular stream records exactly one: Circular No. 37/2026-Customs of 27 August 2026. Its instruction stream records none at all — the most recent entry is Instruction No. 14/2026-Customs of 7 August 2026. No Central Tax, Central Tax (Rate), Integrated Tax, Union Territory Tax or Compensation Cess notification issued, and no CBIC GST circular or GST instruction issued.

The repository's own edges, stated so the claim can be weighed: the notification stream ran to 1 September 2026 and the circular stream to 3 September 2026 when read. As at 30 August 2026 the most recent Central Tax notification remained Notification No. 02/2026-Central Tax of 7 May 2026 and the most recent CBIC GST circular remained Circular No. 256/02/2026-GST of 25 July 2026.

The disclosure: the same sweep surfaced an instrument this series has not previously reported. Instruction No. 01/2026-GST, dated 3 August 2026, is recorded in the CBIC repository under the subject coordination with State Mining Authorities for sharing information relating to illegal mining and transportation of minerals. It is the first GST instruction of the 2026 series, and it does not appear in the W32, W33 or W34 trackers. Its number, date and official subject line are verified from the repository's own metadata record; its operative text was not retrieved — the repository download endpoint timed out on repeated attempts — so nothing is asserted here about what it directs beyond its title. It is stated as a gap, not summarised from inference.

Why it matters: a quiet CBIC week is not a quiet compliance week, and it is also not proof that nothing was issued. What licenses the negative above is that the issuing authority's own repository was loaded and read for this batch. What the instruction disclosure shows is the failure mode on the other side: an instrument can be live for four weeks and absent from three consecutive trackers simply because the instruction stream was never swept. For anyone with mineral-sector exposure, the existence and date of Instruction No. 01/2026-GST is the actionable fact; read the instrument itself before acting on it.

Corpus refs: CIR_254_2025 and INS_06_2025 are the highest indexed keys in the circular and instruction series respectively — both are coverage-boundary markers here, not authority for the week.

Link: CBIC tax information | Instruction No. 01/2026-GST (3 August 2026) | Notification No. 71/2026-Customs (N.T)

3. Closing out July 2026: the 24 August tail of the GSTR-3B wave

What it is: three dates fell inside the week, all of them the tail of the July 2026 cycle. GSTR-3B for July 2026 was due 24 August 2026 for taxpayers with aggregate turnover up to Rs 5 crore in the Category 2 group of States and Union Territories, under Section 39 of the CGST Act, 2017 read with Rule 61 of the CGST Rules, 2017. Form GST PMT-06 for July 2026 — the first month of the July to September QRMP quarter — was due 25 August 2026. GSTR-11 for UIN holders was due 28 August 2026. No extension was notified; the most recent GSTR-3B extension instrument remains Notification No. 01/2026-Central Tax of 20 April 2026 (CGST_01_2026), which moved only the March 2026 return.

A standing line in this series also needs correcting. Previous trackers have carried August collections published on 1 September as a What's Next item without saying where. Monthly GST collections are no longer released through a PIB press release. Per the PIB release of 1 August 2024, gross and net collection data and State-wise IGST settlement are placed on the GST portal under News and Updates, with time-series data under GST Statistics in Downloads. The August 2026 figure is therefore not quoted here — see the gap note.

Why it matters: the 24 August GSTR-3B is the last point at which a July Invoice Management System action changes a July credit position rather than a September one. Credit is available under Section 16(2)(aa) of the CGST Act only where the invoice appears in the auto-drafted GSTR-2B, and interest under Section 50 runs at 18% per annum on the net cash liability. For QRMP taxpayers the 25 August PMT-06 is a cash event with no return attached, which is exactly why it is the one most often missed.

Corpus refs: CGST_01_2026 (most recent GSTR-3B extension), CIR_251_2025 (post-sale discount and credit-note ITC treatment). No in-force corpus anchor exists for the 20th/22nd/24th staggering itself — CGST_76_2020 is expressed for October 2020 to March 2021 and is not a substitute.

Link: CGST Tax Notifications | GST collections move to the GST Portal — PIB

Regulatory Action Log

What's Next

• 2026-09-01 — August 2026 gross and net GST collections published on the GST portal under News and Updates, not by PIB press release.
• 2026-09-10 / 11 / 13 — GSTR-7 and GSTR-8, GSTR-1, and the Invoice Furnishing Facility and GSTR-6 due for August 2026.
• 2026-09-20 / 22 / 24 — GSTR-3B for August 2026 due, on the staggering in Rule 61 of the CGST Rules, 2017.
• 2026-09-30 → 2026-11-30 — Rule 37A cycle: suppliers' GSTR-3B for FY 2025-26 must be filed by 30 September or the recipient reverses the corresponding ITC by 30 November 2026.
• 2026-10-31 — the raw sugar tariff rate quota under Notification No. 30/2026-Customs expires; the one-time AA-to-TRQ conversion window and its IGST procedure run against that date.
• 2026-12-31 — GSTR-9 and GSTR-9C for FY 2025-26 due under Section 44 of the CGST Act, subject to the Rs 2 crore aggregate-turnover exemption in CGST_15_2025.
• Date unannounced — 57th GST Council meeting. The 56th met on 3–4 September 2025 (COUNCIL_56); no notice appeared on gstcouncil.gov.in during the week.

Founder Action Items

• If you are converting a raw sugar Advance Authorisation to the TRQ, do not use the Voluntary Payment Challan. Circular No. 37/2026-Customs directs the IGST to be paid against an electronic challan in the Customs EDI System through the assessment group at the port of import. The Voluntary Payment Challan route is expressly barred because it does not carry the detail GSTN needs, and the credit is what is at stake.
• Ask the port for its Public Notice and Standing Order before you approach the assessment group. The Board has directed Chief Commissioners to issue them; the local sequencing of out-of-charge cancellation, re-assessment and notional out-of-charge will vary.
• Treat the interest waiver as procedure-bound, not general. It is expressed as attaching to the IGST paid under the para 3 procedure. Deviating from the steps risks losing it.
• Close July out. If the 24 August GSTR-3B was filed without completing Invoice Management System actions on July documents, the correction lands in September with interest running under Section 50 at 18% per annum.
• If you have mineral-sector exposure, obtain Instruction No. 01/2026-GST of 3 August 2026 directly. Its subject is coordination with State Mining Authorities on information about illegal mining and transportation of minerals. We have verified that it exists and when; we have not read it, and neither should you rely on a summary of it.

(Verbatim text of the circulars, notifications and instructions named above is carried in full on Veritect Legal AI.)

Practitioner Watch-list

• Circular 37/2026-Cus is a GST circular wearing a Customs number. It was issued by the Drawback Division under a Customs circular series, but its operative content is IGST payment mechanics, the relevant date for credit, an interest waiver, and an express reference to Sections 16, 17 and 18 of the CGST Act. Anyone filtering CBIC output by the GST circular series alone will not see it. Sweep the Customs circular stream too.
• The credit is preserved by transmission, not by payment. The notional out-of-charge in para 3(d) exists solely so the IGST amount and payment date reach GSTN. If that step is skipped locally, the tax is paid and the credit is not visible — which is the same failure the Voluntary Payment Challan bar is aimed at.
• The instruction stream is a real blind spot. Instruction No. 01/2026-GST sat unreported across three trackers. Where a client's exposure is enforcement-side rather than rate-side, the instruction series is often where the operative direction to field formations lives.
• Standing GSTAT posture is unchanged. Office Order No. 4/GSTAT/PB/2026 of 29 July 2026, effective 1 August 2026, remained the operative listing regime through the week: Sections 73 and 74 determinations sit in Category-II under the general classification, the refund and seizure stream in Category-I, Bengaluru runs its own three-category scheme, and part-heard matters stand released (CGST_13_2025). Circular No. 256/02/2026-GST of 25 July 2026 continues to fragment Common Adjudicating Authority appeals noticee-by-noticee and bench-by-bench, on the chain begun by CIR_250_2025.
• Standing refund and valuation positions are unchanged. CGST_14_2025 keeps specified suppliers, and anyone without completed Aadhaar authentication under Rule 10B, outside the 90% risk-based provisional release under INS_06_2025. Rule 31D retail-sale-price valuation for pan masala and tobacco (CGST_19_2025, CGST_20_2025) remains operative from 1 February 2026. Rule 9A electronic registration (CGST_18_2025) continues from 1 November 2025.
• Corpus gaps flagged this week. The corpus holds no anchor for IGST on imports, Advance Authorisation or TRQ conversion; none for the current 20th/22nd/24th GSTR-3B staggering under Rule 61; and none for the 2026 circular and instruction series. Discovery-queue rows have been filed for Circular No. 37/2026-Customs and Instruction No. 01/2026-GST.

FAQ

Did CBIC issue any GST notification, circular or instruction between 24 and 30 August 2026?

No. Read on 5 September 2026, the CBIC tax-information repository records two instruments dated inside the window, neither of them GST: Notification No. 71/2026-Customs (N.T) of 25 August 2026, fixing tariff values for edible oils, brass scrap, areca nut, gold and silver, and Circular No. 37/2026-Customs of 27 August 2026. Its instruction stream records nothing in the window. As at 30 August 2026 the most recent Central Tax notification remained No. 02/2026-Central Tax of 7 May 2026, the most recent CBIC GST circular remained No. 256/02/2026-GST of 25 July 2026, and the most recent CBIC GST instruction was No. 01/2026-GST of 3 August 2026.

How must IGST be paid on raw sugar converted from Advance Authorisation to the tariff rate quota?

Under Circular No. 37/2026-Customs of 27 August 2026, the Advance Authorisation holder approaches the assessment group at the port of import, which cancels the out-of-charge with reasons recorded, re-assesses the bill of entry to charge the tax, and takes payment against an electronic challan in the Customs EDI System. The port then makes a notional out-of-charge so the IGST amount and its date of payment transmit to the GSTN portal. Interest on that payment is waived, the procedure applies once per bill of entry, and input tax credit follows the ordinary tests in Sections 16, 17 and 18 of the CGST Act, 2017. Payment must not be routed through the Voluntary Payment Challan module.

Which GST returns were due between 24 and 30 August 2026?

GSTR-3B for July 2026 was due 24 August 2026 for taxpayers with aggregate turnover up to Rs 5 crore in the Category 2 group of States and Union Territories, under Section 39 of the CGST Act, 2017 read with Rule 61 of the CGST Rules, 2017. Form GST PMT-06 for July 2026, the first month of the July–September QRMP quarter, was due 25 August 2026, and GSTR-11 for UIN holders was due 28 August 2026. CBIC notified no extension. Late filing attracts a late fee under Section 47 with interest at 18% per annum under Section 50.

Research gaps recorded this week

Recorded as gaps rather than findings. (a) The GSTN advisory surface at gst.gov.in returned a CAPTCHA challenge on every attempt, as in W34, so whether GSTN published a portal advisory between 24 and 30 August 2026 is unconfirmed in either direction — it is not asserted that none was issued. (b) Because monthly collections now publish on that same portal rather than through PIB, the August 2026 gross and net GST collection figures were not retrievable for this tracker and are not quoted. (c) egazette.gov.in exposes an ASP.NET postback search that cannot be queried programmatically, so the week's G.S.R. and S.O. numbers were not independently confirmed against the Gazette; the notification and circular facts above come from the CBIC tax-information repository and the instruments' own signed PDFs. (d) The full text of Instruction No. 01/2026-GST was not retrieved — its number, date and official subject line are verified from the CBIC repository metadata record, and nothing beyond that is asserted. (e) The verified-negative in the Regulatory Action Log rests on the CBIC repository as read on 5 September 2026, when its notification stream ran to 1 September 2026 and its circular stream to 3 September 2026; a late-loaded instrument dated inside the window would not have been visible. (f) The GSTAT case-statistics dashboard was not read inside the 24–30 August window, so no caseload figure is quoted rather than presenting a later read as a week-end position.

Sources: CBIC Tax Information | Circular No. 37/2026-Customs | Instruction No. 01/2026-GST | Notification No. 71/2026-Customs (N.T) | Notification No. 30/2026-Customs | Circular No. 256/02/2026-GST | GSTAT Office Order No. 4/GSTAT/PB/2026 | GSTAT Announcements | CGST Circulars | CGST Tax Notifications | What's New — GST Council | GST collections on the GST Portal — PIB | 56th GST Council Press Release — PIB

Veritect Legal Intelligence publishes this tracker as a public information service. It does not constitute legal advice. All source URLs resolve to Tier 1 government domains only.

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