Short title extent and commencement

Section 1 — Short title, extent and commencement

BLOCK 2 — PRE-GST COUNTERPART / PARALLEL PROVISIONS / OPERATIVE RULES

BLOCK 3 — COMMENTARY

1. Statutory Architecture

2. Historical Context

Pre-GST, inter-State commerce in goods bore Central Sales Tax (CST) under the Central Sales Tax Act, 1956, levied by the Union but collected and appropriated by the originating State under Article 269(1) of the Constitution. CST was a destination-friction tax — it broke the credit chain because the importing State gave no credit for CST paid in the originating State. This was the single biggest fiscal distortion of the pre-GST regime, and its elimination was the principal economic argument for GST.

Inter-State trade in services had no statutory framework comparable to CST. Service-tax was a Union levy applied India-wide under the Finance Act, 1994 (s. 64), without inter-State apportionment. Cross-border services were brought to charge through the Place of Provision of Services Rules, 2012 (POPS Rules) — a rules-only architecture that the IGST Act has now elevated to statutory s. 13.

Import of goods bore basic customs duty (BCD) plus countervailing duty (CVD) and Special Additional Duty (SAD) under s. 3(1) and s. 3(5) of the Customs Tariff Act, 1975. The CVD/SAD architecture has been replaced by IGST on imports under s. 3(7)/(9) of the Customs Tariff Act, read with s. 5(1) proviso of the IGST Act. The IGST Act therefore unifies — in a single statute — what was previously fragmented across CST, service-tax cross-border rules, and customs CVD/SAD.

The IGST Act was made possible by the Constitution (101st Amendment) Act, 2016, which inserted Article 246A (concurrent GST competence), Article 269A (apportionment of inter-State GST), and Article 279A (GST Council). The IGST Act, 2017 (Act No. 13 of 2017) was enacted by Parliament under Article 246A(2) and received Presidential assent on 12 April 2017. It was extended to Jammu and Kashmir w.e.f. 8 July 2017 by the IGST (Extension to J&K) Act, 2017 (No. 27 of 2017).

Commencement was notified in two tranches — Notification 1/2017-IT dated 19.06.2017 brought ss. 1, 2, 3, 14, 20, 22 into force on 22.06.2017 (administrative spine to enable registration, rule-making, and OIDAR procedural framework); Notification 3/2017-IT dated 28.06.2017 brought the remaining substantive provisions into force on 01.07.2017 (the appointed day). This staged commencement was essential to permit pre-appointed-day registration and infrastructure readiness.

3. Judicial Evolution

Section 1 is a preliminary provision and is rarely litigated in isolation. The doctrinal authorities below shape how the appointed-day, territorial extent, and prospective-operation features of s. 1 are construed when they come up incidentally in tax disputes:

Commissioner of Income Tax v Vatika Township Pvt Ltd — (2015) 1 SCC 1 [Supreme Court — 5-Judge Constitution Bench]

Brief Facts: The Income-tax Act's surcharge provisions had been amended mid-year. Question was whether the amendment applied retrospectively to assessment years already commenced. Constitution Bench was constituted to settle conflicting two-Judge Bench rulings on the presumption of prospectivity for fiscal statutes.

Issue: Whether a fiscal statute that imposes or enhances a burden operates prospectively unless expressly or by necessary implication retrospective; and what is the standard of clarity required for retrospective imposition.

HELD: Strong presumption of prospectivity for any provision that imposes or enhances a burden. Retrospective imposition requires either an express statutory direction or a necessary implication so unmistakable that no reasonable construction can avoid it. Beneficial provisions may be construed retrospectively; burden-imposing provisions cannot.

"If a legislation confers a benefit on some persons but without inflicting a corresponding detriment on another, it could be construed to be retrospective. The same is not true of a provision imposing a tax or otherwise creating a fresh burden — there, the presumption of prospectivity is at its strongest."

Relevance: Constitutional anchor for prospective operation of GST amendments. Decisive in every dispute over the effective date of a notification, amendment, or rule change under IGST.

Union of India v Mohit Minerals Pvt Ltd — (2022) 10 SCC 700 [Supreme Court — 3-Judge Bench (Constitution Bench questions)]

Brief Facts: Importers of coal on CIF basis were held liable under Notification Nos. 8/2017-Integrated Tax (Rate) and 10/2017-Integrated Tax (Rate) to pay IGST on ocean freight component under reverse charge under s. 5(3)/(4) of the IGST Act. Importers challenged the levy as ultra vires the charging section and contended that IGST had already been paid on CIF value (which included freight) at the time of import under s. 3(7) of the Customs Tariff Act.

Issue: Whether IGST could be levied separately on the ocean freight component of CIF imports when the entire CIF value (inclusive of freight) had suffered IGST under s. 3(7) of the Customs Tariff Act; and whether GST Council recommendations are binding on the Union and States.

HELD: Levy struck down. The Court held that the impugned notification offended the principle of 'composite supply' under s. 8 of the CGST Act because ocean freight in CIF imports is part of the composite supply of imported goods and cannot be artificially severed. Further, the GST Council's recommendations are recommendatory, not binding, on the Union and States — both Parliament and State legislatures have simultaneous legislative power under Article 246A.

"The recommendations of the GST Council are not binding on the Union and the States. The recommendations only have a persuasive value. To regard them as binding would disrupt fiscal federalism, where both the Union and the States are conferred equal power to legislate on GST."

Relevance: Foundational authority on the IGST charging section, the limits of reverse-charge notifications under s. 5(3)/(4), and the constitutional architecture of the GST Council. Repeatedly cited in RCM, place-of-supply, and composite-supply disputes.

Union of India v Filco Trade Centre Pvt Ltd — (2022) SCC OnLine SC 1156 [Supreme Court — 2-Judge Bench]

Brief Facts: Multiple High Courts had directed nationwide reopening of the GSTN portal for filing/revising TRAN-1 / TRAN-2 by taxpayers who had missed the original window. SC consolidated the appeals and considered whether Article 142 could be invoked to grant procedural relief beyond the statutory transitional-credit window under s. 140 of the CGST Act.

Issue: Whether a vested transitional CENVAT/ITC credit can be defeated by procedural deadlines, and whether the SC can direct a nationwide one-time portal reopening under Article 142.

HELD: Portal reopened nationwide for a 2-month window (1 Oct to 30 Nov 2022, later extended). The Court held that transitional credit is a vested right that cannot be defeated by mere procedural lapses, and Article 142 may be invoked to do complete justice where the procedural architecture has failed thousands of taxpayers.

"Article 142 confers a plenary power on this Court to do complete justice. Where a procedural failure of the administrative architecture has caused widespread denial of substantive rights, this Court can direct a one-time corrective dispensation."

Relevance: Authority for the vested-right doctrine in transitional credit; for the use of Article 142 to correct portal/architecture failures; and as the procedural template for any future SC-supervised GSTN remedial scheme.

All India Federation of Tax Practitioners v Union of India — (2007) 7 SCC 527 [Supreme Court — 3-Judge Bench]

Brief Facts: The constitutional validity of the service-tax levy on chartered accountants, cost accountants, and architects was challenged on the ground that these professions had been historically regulated by State legislation and were therefore outside Union legislative competence.

Issue: Constitutional foundation of the service-tax levy — whether 'service' can be taxed by the Union under the residuary entry (Entry 97 List I) and what is the doctrinal nature of a service-tax levy.

HELD: Service-tax upheld. The Court held that service-tax is a value-added tax on the value of services rendered, traceable to Entry 97 of List I until Entry 92C was inserted by the Constitution (88th Amendment). The economic concept of value addition through services is the doctrinal basis on which service-tax — and now GST on services — rests.

"Service-tax is a value-added tax on the commercial activity of providing services. The taxable event is the rendition of service and the levy attaches to the value addition at the point of service delivery."

Relevance: Constitutional anchor for taxation of services under GST — pre-101st-Amendment doctrinal framework that informs the place-of-supply concept under s. 12 and s. 13 of the IGST Act.

Mafatlal Industries Ltd v Union of India — (1997) 5 SCC 536 [Supreme Court — 9-Judge Constitution Bench]

Brief Facts: Multiple manufacturers had paid central excise duty under protest, succeeded in challenges, and sought refund. The question arose whether the doctrine of unjust enrichment applies to indirect-tax refunds, whether refund can be denied if the burden has been passed on, and whether common-law refund claims survive the statutory refund regime.

Issue: Constitutional and doctrinal scope of refund of indirect taxes — whether unjust enrichment bars refund where burden has been passed on; whether the statutory refund mechanism is exclusive.

HELD: Constitution Bench held (i) the statutory refund mechanism under the Central Excise Act is exclusive — common-law refund claims are excluded; (ii) the doctrine of unjust enrichment applies — refund will not be granted where the assessee has passed on the burden to the ultimate consumer; (iii) the burden of proof on incidence-passing is on the claimant.

"Where the duty has been passed on to the buyer, the manufacturer is not entitled to refund. To do otherwise would be to enrich the manufacturer at the expense of the consumer — a course no principle of justice can support."

Relevance: Foundational unjust-enrichment authority that animates s. 54(8)(e) and the Consumer Welfare Fund mechanism. Decisive in every IGST refund claim including zero-rated/inverted-duty/excess-balance refunds.

Maneka Gandhi v Union of India — (1978) 1 SCC 248 [Supreme Court — 7-Judge Constitution Bench]

Brief Facts: Petitioner's passport was impounded under s. 10(3)(c) of the Passport Act without a hearing. She challenged the action as violating Articles 14, 19, and 21 — particularly the right to audi alteram partem before adverse action.

Issue: Whether procedural fairness — particularly the right to be heard — is implicit in Article 21; and whether administrative action affecting a right must be preceded by a fair hearing.

HELD: Procedural fairness is implicit in Article 21. Any procedure that affects life, liberty or a valuable right must be 'right, just and fair' — not arbitrary, oppressive or fanciful. Audi alteram partem is a constitutional requirement, not merely an administrative-law refinement.

"The procedure contemplated by Article 21 must be right, just and fair, and not arbitrary, fanciful or oppressive; otherwise it would be no procedure at all and the requirement of Article 21 would not be satisfied."

Relevance: Foundational due-process authority. Cited in every GST refund / show-cause / cancellation / blocking-of-ITC case where the assessee was not heard before adverse action.

4. Circulars and Notifications

Notification No. 1/2017-Integrated Tax dated 19.06.2017 — Commencement of administrative spine of the IGST Act

Appointed 22 June 2017 as the date on which Sections 1, 2, 3, 14, 20 and 22 of the IGST Act, 2017 came into force. These provisions were brought in early to enable the Central Government to make rules under s. 22, to put in place the OIDAR special provision under s. 14, to apply CGST provisions via s. 20, to appoint officers under s. 3, and to give effect to the definitions in s. 2.

Notification No. 3/2017-Integrated Tax dated 28.06.2017 — Commencement of the remaining substantive provisions of the IGST Act

Appointed 1 July 2017 as the date on which the remaining provisions of the IGST Act, 2017 came into force. This is the appointed-day for the charging section (s. 5), determination of nature of supply (ss. 7-9), place-of-supply provisions (ss. 10-13), refund to tourists (s. 15), zero-rated supply (s. 16), apportionment (ss. 17-19), and the residual miscellaneous provisions (ss. 21, 23-25).

IGST (Extension to J&K) Act, 2017 (No. 27 of 2017) dated Enacted 23 August 2017 (notified w.e.f. 08.07.2017) — Removal of the J&K exclusion from s. 1(2) of the IGST Act

Omitted the words 'except the State of Jammu and Kashmir' from s. 1(2) of the IGST Act with retrospective effect from 8 July 2017. From 8 July 2017 the IGST Act applies to the entire territory of India including the (then) State of J&K. After the Jammu and Kashmir Reorganisation Act, 2019 (w.e.f. 31.10.2019), the UTs of J&K and Ladakh became Union Territories with Legislature/without Legislature respectively, governed by UTGST Act for intra-UT supplies and IGST Act for inter-State / inter-UT supplies.

Notification No. 9/2017-Integrated Tax dated 28.06.2017 — IGST Rules, 2017 — notification under s. 22(1) of the Act

The Central Government in exercise of the rule-making power under s. 22 of the IGST Act, 2017 (which had come into force on 22.06.2017 by virtue of Notification 1/2017-IT) notified the IGST Rules, 2017 with effect from 22.06.2017 — providing the procedural skeleton for place-of-supply of services where the location of supplier or recipient is outside India (Rules 4-9 inserted later by Notification 04/2018-IT).

CBIC Press Release dated 30.06.2017 dated 30.06.2017 — GST go-live announcement and appointed-day midnight launch

Confirmed the simultaneous appointed-day for the CGST, IGST, UTGST and SGST Acts of all States as 1 July 2017 (00:00 hours), marking the historic transition from a fragmented indirect-tax regime to a unified Goods and Services Tax. Set out the staged commencement of OIDAR registrations, GSTR-3B simplified-return mechanism, and exemption thresholds.

5. Worked Examples

6. Practitioner Planning

• Diarise the appointed-day for every new notification, amendment, or rule change — the date that governs charge attachment is the date in the commencement notification, not the date of publication.
• Where a substantive provision is notified to come into force from a future date, plan compliance infrastructure (registration, system setup, vendor onboarding) ahead of the appointed day to be ready when the charge attaches.
• For supplies straddling a rate-change appointed day, apply the time-of-supply test under ss. 12/13 CGST (read via s. 20 IGST), not the invoice date — Vatika Township's prospective-operation presumption shields supplies whose time of supply pre-dates the change.
• For supplies into/from J&K, recall the 8 July 2017 cut-off — supplies before that date were outside IGST charge regardless of inter-State character.
• For Union-Territory supplies (Ladakh, Lakshadweep, A&N Islands, Chandigarh, DNHDD), confirm whether the destination UT has Legislature (UTGST + IGST) or without Legislature (UTGST only intra-UT, IGST for inter-State).
• Cross-border services to/from special territories (Indian merchant ships outside territorial waters, Indian embassies abroad) require careful place-of-supply analysis under s. 13 IGST — not all such transactions are within IGST charge.
• For SEZ supplies, recall that SEZ is within India for territorial purposes but the supply is zero-rated under s. 16 IGST — LUT/IGST-route mechanics determine the cash-flow impact.
• Importers should plan for IGST on import as a duty of customs under s. 3(7)/(9) Customs Tariff Act — paid at customs clearance, available as ITC in the importer's GSTN credit ledger.
• For inter-State branch transfers (s. 25(4)/(5) CGST distinct-person fiction), confirm IGST charging architecture and ITC chain — distinct-person supplies between States attract IGST despite no third-party sale.
• For OIDAR suppliers outside India, the early commencement of s. 14 (22.06.2017) gave a 9-day window of administrative readiness before the charging section s. 5 came into force on 01.07.2017 — replicate that pattern when planning for any future cross-border digital-services compliance.
• Where Department invokes a notification with retrospective effect, immediately invoke Vatika Township's strong-presumption-of-prospectivity — burden is on the Revenue to show express or necessary-implication retrospective intent.
• For litigation involving the appointed-day, exhibit the relevant commencement notification (Nos. 1/2017-IT, 3/2017-IT, and the J&K Extension Act) as part of the documentary record to forestall any 'when did the charge attach' dispute.
• Maintain a master log of all IGST notifications issued under s. 1(3) with their appointed-day dates — this is the foundation for any time-of-supply / rate-change / amendment-effective-date dispute.
• For exports, recall that the charge attaches at time of supply but the place of supply is outside India — zero-rated route under s. 16 read with LUT mechanism preserves the export tax neutrality.
• For pre-01.07.2017 transitional cases (TRAN-1, TRAN-2, ITC carry-forward), exploit Filco Trade's vested-right + Article 142 framework to seek relief where procedural deadlines under the appointed-day regime have been missed.

7. Litigation Defence

• Vatika Township defence — for any allegation that a later notification or amendment applies retrospectively to your client's pre-amendment supplies, invoke the strong presumption of prospectivity; burden on Revenue to displace by express words or necessary implication.
• Mohit Minerals defence — for challenges based on a notification under s. 5(3)/(4) that purports to expand the charge beyond the parent statute, contend that GST Council recommendations are persuasive not binding and a notification cannot enlarge the scope of the charging section.
• Filco Trade defence — for transitional credit denied on procedural grounds (missed TRAN-1 window, GSTN portal failures), invoke vested-right doctrine and Article 142 remedial framework; precedent for one-time portal reopening exists.
• Maneka Gandhi audi alteram partem defence — for any retrospective levy or charge attachment without prior notice or hearing, invoke procedural-fairness as constitutional minimum under Article 21.
• Mafatlal unjust-enrichment defence — for refund of IGST wrongly collected, prove non-passing-on of burden through invoice-level / pricing-trend evidence; conversely, for Revenue, prove passing-on through margin analysis.
• AIFTP doctrinal defence — for challenges to the IGST charge on services on entry-of-list grounds, reply that Article 246A(2) post-101st Amendment confers exclusive Parliamentary competence on inter-State GST; pre-amendment Entry-97 reasoning no longer controls.
• Puttaswamy proportionality — for data-sharing or compliance burdens (e-invoicing scope, GSTN data flows, OIDAR registration), test the State action against the four-pronged proportionality framework (legality, legitimate aim, necessity, least-restrictive means).
• J&K extension defence — for inter-State supplies into/from J&K between 01.07.2017 and 08.07.2017, contend that the IGST charge did not extend to J&K during that window; relief from charge for that interregnum.
• Appointed-day defence — for any charge attaching before the substantive provision's appointed-day, contend that the provision had not yet been notified into force and the charge cannot retroactively attach.
• Different-appointed-day defence — exploit the staged commencement under s. 1(3) proviso to argue that a procedural requirement (e.g., a return or registration obligation) could not attach until the related substantive provision was itself in force.
• Territorial-extent defence — for supplies in territorial waters or EEZ beyond 12 nautical miles, contend that the IGST Act extends only to 'India' as constitutionally defined; supplies outside that territorial reach are outside the charge.
• SEZ zero-rating defence — for any attempt to charge IGST on supplies to SEZ developers/units, invoke s. 16 IGST and the FTP/SEZ Act regime — zero-rated either via LUT (no IGST) or via IGST-paid route with refund.
• Charging-section anchor defence — for any procedural objection by Revenue, return the inquiry to the charging section (s. 5) — if the supply is not within the charging section's four corners, no procedural defect can validate the demand (Mohit Minerals reasoning).
• Constitutional foundation defence — for any challenge to a State's right to share in IGST, invoke Art. 269A and the GST Council apportionment architecture under s. 17 IGST.
• Article 142 backstop — for any architectural/portal failure that has denied substantive entitlement, frame the relief sought in Article 142 terms (Filco Trade template).
• Statutory-instrument hierarchy — recall the rule that a notification, rule or circular cannot enlarge or contradict the parent statute; the s. 5 charging section is the outer boundary of every IGST levy.

8. Procedural Map — Documenting the Appointed-Day Architecture

Step 1. Identify the relevant commencement notification

For any IGST provision, locate the Central Government notification under s. 1(3) appointing its date of commencement (typically Notification 1/2017-IT for ss. 1, 2, 3, 14, 20, 22 from 22.06.2017; Notification 3/2017-IT for remaining provisions from 01.07.2017).

Step 2. Locate the parent statute and any extension Acts

Read s. 1 IGST Act with the IGST (Extension to J&K) Act, 2017 (No. 27 of 2017) and (post 31.10.2019) the J&K Reorganisation Act, 2019.

Step 3. Map territorial extent for the supply

Confirm whether the place of supply / location of supplier / recipient is within 'India' as defined in s. 2(56) CGST applied via s. 20 IGST.

Step 4. Apply the time-of-supply test

Determine time of supply under s. 12/13 CGST applied via s. 20 IGST; this anchors the appointed-day rate to the supply.

Step 5. Cross-check the rate in force on the time of supply

Read the applicable notification (e.g., Notification 1/2017-IT(R) for goods; Notification 8/2017-IT(R) for services) as in force on the time of supply.

Step 6. Document Vatika Township prospectivity for any disputed amendment

If Revenue alleges retrospective application, build the prospectivity defence — strong presumption + express-or-necessary-implication test.

Step 7. Document the appointed-day in pleadings

In SCN replies, appeals, and writ petitions, set out the precise commencement notification(s) and dates as part of the documentary record.

Step 8. Confirm SEZ / FTWZ / EOU status of supplier or recipient

Status determines whether s. 16 zero-rating applies; SEZ supplies are within India for territorial purposes but zero-rated for IGST.

Step 9. For imports, read s. 3(7)/(9) Customs Tariff Act with s. 5(1) IGST proviso

IGST on imports operates as a duty of customs under the Customs Tariff Act, collected at the time of clearance.

Step 10. For exports, document zero-rated route — LUT or IGST-paid

LUT (no IGST) requires Bond/LUT under Rule 96A CGST; IGST-paid route triggers refund under s. 54 CGST applied via s. 20 IGST.

Step 11. For OIDAR cross-border supplies, confirm registration status of recipient

B2B — RCM under s. 5(3); B2C — OIDAR supplier registers under s. 14 simplified scheme.

Step 12. For territorial-waters supplies, apply s. 9 IGST coastal-State rule

Supply is treated as supply in the coastal State adjoining the platform/vessel location.

Step 13. For J&K supplies before 08.07.2017, document the exclusion-period defence

Pre-08.07.2017 supplies into J&K were outside the IGST charge — exhibit the original s. 1(2) exclusion clause.

Step 14. Maintain the master commencement-log

Maintain firm-level master log of every IGST notification issued under s. 1(3) with appointed-day dates and the provisions notified.

Step 15. Periodic review — track new commencement notifications

Subscribe to CBIC notifications, GST Council meeting minutes, and Press Releases; update the master log on every new commencement notification.

CROSS-REFERENCES

• s. 2 IGST Act — Definitions, including 'India', 'integrated tax', 'inter-State supply', and other foundational terms.
• s. 3 IGST Act — Appointment of officers under the IGST Act (early appointed-day 22.06.2017).
• s. 5 IGST Act — Charging section; appointed-day 01.07.2017.
• s. 6 IGST Act — Power to grant exemption from IGST.
• s. 7 IGST Act — Inter-State supply definitional architecture.
• s. 8 IGST Act — Intra-State supply definitional architecture.
• s. 9 IGST Act — Supplies in territorial waters — coastal-State rule.
• ss. 10-13 IGST Act — Place of supply provisions (goods + services in India + services cross-border).
• s. 14 IGST Act — OIDAR special provision; early appointed-day 22.06.2017.
• s. 15 IGST Act — Refund of IGST to international tourist leaving India.
• s. 16 IGST Act — Zero-rated supply (exports + SEZ supplies).
• s. 17 IGST Act — Apportionment of tax and settlement of funds.
• s. 17A IGST Act — Transfer of certain amounts (inserted by IGST (Amendment) Act, 2018; w.e.f. 01.02.2019).
• s. 18 IGST Act — Transfer of input tax credit between IGST and CGST/SGST/UTGST.
• s. 19 IGST Act — Tax wrongfully collected and paid to Central or State Government.
• s. 20 IGST Act — Application of CGST provisions to IGST.
• s. 21 IGST Act — Import of services made on or after the appointed day.
• s. 22 IGST Act — Power to make rules under the IGST Act; early appointed-day 22.06.2017.
• s. 23 IGST Act — Power to make regulations.
• s. 24 IGST Act — Laying of rules, regulations and notifications before Parliament.
• s. 25 IGST Act — Removal of difficulties (sunset 01.07.2020).
• s. 1 CGST Act, 2017 — parallel commencement architecture.
• s. 1 UTGST Act, 2017 — parallel commencement architecture for UTs without Legislature.
• s. 174 CGST Act — Repeal and saving of pre-GST levies.
• s. 3(7)/(9) Customs Tariff Act, 1975 — IGST on imports as duty of customs.
• s. 5 SEZ Act, 2005 — zero-rated supply architecture for SEZ developers/units.
• Constitution Article 246A — concurrent GST competence.
• Constitution Article 269A — apportionment of IGST.
• Constitution Article 279A — GST Council architecture.
• IGST (Extension to J&K) Act, 2017 (No. 27 of 2017) — J&K extension w.e.f. 08.07.2017.
• J&K Reorganisation Act, 2019 — post-31.10.2019 UT architecture.
• IGST Rules, 2017 — Rules 4-9 (inserted by Notification 04/2018-IT) on place-of-supply for cross-border services.
• Notification 1/2017-Integrated Tax dated 19.06.2017 — appointed-day for ss. 1, 2, 3, 14, 20, 22.
• Notification 3/2017-Integrated Tax dated 28.06.2017 — appointed-day for remaining IGST provisions w.e.f. 01.07.2017.