The Great Tarrification of May 2026 Legal Consequences of Collapsing 54 Customs Tariff Headings Into the First Schedule - Exemption Notifications, Classification Disputes, and End of SWS Exemptions

Summary

Clause 136 read with Schedule V of the Finance Bill 2026 proposes to incorporate the effective Basic Customs Duty (BCD) rates - earlier operating through exemption notifications - directly into the First Schedule to the Customs Tariff Act 1975. The change will come into effect from 1st May 2026 and covers approximately 54 Tariff Headings spanning 21 Chapters. Consequentially, 22 exemption entries in Notification No. 36/2024-Customs and related entries in Notification No. 45/2025-Customs dated 24th October 2025 are being omitted or collapsed into the Tariff Schedule. The effective duty rates remain unchanged. This article analyses the legal and practical consequences of the tarrification exercise: the implications for pending classification disputes where the dispute turns on the interaction between the Tariff and exemption notifications; the effect on Social Welfare Surcharge (SWS) computation where exemption-based zero duty previously extinguished SWS liability; the treatment of ongoing provisional assessments under Section 18; and the compliance roadmap importers should follow before and after 1st May 2026. The article closes with specific CBIC recommendations to prevent a wave of post-tarrification classification disputes.

1. The Problem

India's Customs Tariff has, for decades, operated through a dual structure: the First Schedule to the Customs Tariff Act 1975 prescribes statutory BCD rates for each Tariff Heading, while a large body of exemption notifications (issued under Section 25 of the Customs Act 1962) reduces or removes the duty for specified goods, users, or end-uses. The effective duty rate for most imports is therefore determined not by the Schedule alone but by the interplay of Schedule + exemption notification.

Over time, this dual structure has produced two significant problems. First, importers and assessing officers must navigate a maze of overlapping notifications - Notification No. 50/2017-Customs (general exemptions), Notification No. 45/2025-Customs (recent consolidation), sector-specific notifications (pharmaceuticals, electronics, renewable energy), and conditional notifications. Classification of a single import may attract multiple applicable notifications, each with distinct conditions. Second, disputes arise not over the headline Tariff Rate but over the availability of an exemption notification - producing high-stakes litigation where identical goods attract radically different effective duties depending on end-use or user classification.

The Finance Bill 2026 addresses this structural issue through 'tarrification' - incorporating effective duty rates directly into the First Schedule and eliminating the corresponding exemption notifications. On policy terms, this is a welcome simplification. On practical terms, it triggers a cluster of transitional legal questions that importers must navigate before and after the 1st May 2026 effective date.

2. The Scope of the Tarrification Exercise

2.1 Clause 136 and Schedule V of the Finance Bill 2026

Clause 136 of the Finance Bill 2026, read with Schedule V, creates new tariff lines and incorporates effective BCD rates into the First Schedule to the Customs Tariff Act 1975 for approximately 54 Headings across 21 Chapters. The chapters covered include steel (Chapters 72-73), chemicals (Chapters 28-29), plant-based products (Chapters 12-13), food processing (Chapters 19-21), electronics (Chapters 84-85), and several others. The Government's Departmental Officer JS TRU-I Letter dated 1st February 2026 confirms that 'there is no change in the applicable rate of duty' - the tarrification is rate-neutral.

2.2 Consequential Amendments to Exemption Notifications

To give effect to the tarrification, the following notifications are being amended or allowed to lapse:

(i) Notification No. 02/2026-Customs dated 1st February 2026 - amends Notification No. 45/2025-Customs dated 24th October 2025 and Notification No. 36/2024-Customs dated 23rd July 2024 to omit the corresponding exemption entries;

(ii) Notification No. 03/2026-Customs - makes consequential amendments to the Social Welfare Surcharge (SWS) exemption notification to maintain the overall effective incidence;

(iii) 22 exemption entries in Notification No. 36/2024-Customs are being omitted as redundant, with the applicable BCD now operating through the First Schedule;

(iv) 102 exemption entries in Notification No. 45/2025-Customs are being extended up to 31st March 2028 (those not being tarrified); and

(v) Sunset clauses are being removed from 3 unconditional exemption entries and newly prescribed for 4 conditional exemption entries.

The effective date for most tarrification changes is 1st May 2026. Certain rate-related changes became effective earlier on 2nd February 2026 (via the Finance Bill 2026 proposals taking immediate effect under the Provisional Collection of Taxes Act 2023).

3. Before and After - Illustrative Tarrification Impact

4. The Analysis - Four Unresolved Legal Issues

4.1 Issue 1 - Pending Classification Disputes Spanning the Transition

Classification disputes currently pending before the Commissioner (Appeals), CESTAT, and the High Courts frequently involve the applicability of an exemption notification - for example, whether imported goods qualify as 'goods specified in List 8' of Notification No. 45/2025-Customs for use in solar photovoltaic manufacturing. Post-tarrification, the exemption notification basis of the dispute disappears. The key legal question is whether the dispute becomes infructuous (if the effective duty outcome is identical), or whether the pre-amendment notification continues to govern pre-1 May 2026 imports. The settled position is that the law applicable to the date of import governs - but litigants and adjudicating authorities must exercise care to apply the correct regime based strictly on date of import.

4.2 Issue 2 - Social Welfare Surcharge (SWS) Implications

The Social Welfare Surcharge, levied under Section 110 of the Finance Act 2018, is charged at 10 per cent on the aggregate of duties of customs levied on the imported goods. Where BCD is zero due to exemption, SWS is also zero. Post-tarrification, if the First Schedule shows a positive BCD rate that was previously exempted to zero, the computation base for SWS changes - unless the consequential amendment to the SWS exemption notification (Notification No. 03/2026-Customs) maintains the zero outcome. Practitioners must verify, for each affected tariff line, whether the SWS position remains neutral or has changed as a consequence of the tarrification exercise.

4.3 Issue 3 - Provisional Assessments Under Section 18 and Reassessments

Section 18 of the Customs Act 1962 permits provisional assessment where the importer is unable to produce documents or where testing or investigation is required. Final assessment under Section 18(2) is typically governed by the law as it stood on the date of import, not on the date of finalisation. However, where provisional assessment is finalised post-1 May 2026 for imports made pre-1 May, the pre-amendment regime (First Schedule + exemption notification) applies. Post-1 May imports are governed by the tarrified First Schedule directly. Practitioners should maintain clear documentation of the date of import for each consignment to avoid confusion in post-transition finalisations.

4.4 Issue 4 - Refund Claims and Settled Assessments

Refund claims under Section 27 of the Customs Act 1962 for pre-1 May 2026 imports continue to be governed by the pre-amendment regime. Tarrification is prospective and does not affect settled assessments or pending refund claims. Practitioners should ensure that refund applications correctly cite the pre-amendment exemption notification rather than the post-tarrification First Schedule position.

5. Decision Flowchart - Which Regime Governs Your Import

The applicable regime is determined by the date of import - specifically, the date of presentation of the Bill of Entry for home consumption under Section 15(1)(a) of the Customs Act. The decision framework is as follows:

(i) Date of import is on or before 30 April 2026: Apply the First Schedule rate PLUS the applicable exemption notification (e.g., Notification No. 45/2025-Customs). Classification disputes, refund claims, and appeals continue under this regime.

(ii) Date of import is on or after 1 May 2026: Apply the tarrified First Schedule rate directly. The corresponding exemption notification stands omitted or absorbed. Disputes will focus on Tariff Heading classification rather than exemption eligibility.

(iii) Provisional assessment finalisation post-1 May 2026 for pre-1 May imports: The pre-amendment regime applies to the finalisation. The date of import (not finalisation) is the governing trigger.

(iv) Appeal or refund claim for pre-1 May imports: Continue under the pre-amendment regime. The change in the tariff structure does not retroactively affect settled or pending assessments.

6. The Solution - A Six-Point Compliance Roadmap

6.1 Before 1 May 2026 - Pre-Transition Preparation

Importers should undertake the following actions before 1st May 2026:

(1) Conduct a Tariff Impact Assessment - identify each Tariff Heading under which the importer imports goods, cross-reference with the 54 Headings being tarrified, and determine the pre-tarrification effective duty (Schedule rate less exemption) and the post-tarrification Schedule rate.

(2) Review All Subsisting Exemption Claims - for goods currently cleared under Notification No. 45/2025-Customs or Notification No. 50/2017-Customs, determine whether the exemption is being absorbed into the Schedule (tarrified) or continues to operate separately.

(3) Update ERP and Customs Broker Instructions - amend master data for post-1 May 2026 imports to ensure Bills of Entry correctly reference the tarrified Schedule rate rather than obsolete exemption notifications.

6.2 On and After 1 May 2026 - Operational Compliance

(4) Classification Review - classification disputes will now focus on which Tariff Heading applies rather than which exemption applies. Advance Ruling applications under Section 28-I (now extended to 5-year validity under Finance Bill 2026) should be filed for borderline cases.

(5) Track SWS Changes - verify the consequential SWS position through Notification No. 03/2026-Customs; where SWS was previously zero due to BCD exemption, check whether the consequential amendment maintains the same effective rate.

(6) Pending Appeals and Refund Claims - continue to plead under the pre-amendment regime for pre-1 May imports; maintain a clear record of date of import to avoid confusion in post-transition adjudication.

7. Key Takeaways for Practitioners

First, tarrification is a welcome structural simplification. By collapsing effective duty rates into the First Schedule, the exercise reduces the compliance navigation burden and eliminates a layer of notification-dependent uncertainty. However, it does not reduce classification disputes - it shifts them from exemption eligibility to Tariff Heading determination.

Second, the effective date of 1st May 2026 is the critical compliance trigger. Imports on or before 30th April 2026 continue to be governed by the pre-amendment First Schedule plus exemption notification regime. Imports from 1st May 2026 onwards are governed by the tarrified Schedule directly. The date of presentation of the Bill of Entry under Section 15(1)(a) is the governing test.

Third, pending classification disputes and refund claims for pre-1 May 2026 imports are not extinguished by the tarrification exercise. The law as it stood on the date of import continues to govern the dispute. Litigants must exercise care to preserve the pre-amendment legal architecture in their pleadings and arguments.

Fourth, Social Welfare Surcharge exposure may change silently. Where BCD was previously zero due to exemption and SWS was consequently zero, the post-tarrification Schedule rate may trigger a positive SWS unless the consequential amendment under Notification No. 03/2026-Customs maintains the prior effective outcome. Tariff-line-level verification is essential.

8. Conclusion and CBIC Recommendations

The tarrification of 54 Customs Tariff Headings with effect from 1st May 2026 is a landmark structural simplification of India's Customs Tariff architecture. It aligns with global best practices of rate transparency, reduces notification clutter, and strengthens the First Schedule as the primary legal source of BCD liability. However, the transition requires careful navigation to avoid disputes on pending assessments, refund claims, and SWS computations. The author makes the following specific recommendations to CBIC:

(i) Issue a Circular under Section 151A of the Customs Act expressly clarifying that the tarrification is prospective from 1st May 2026 and that pre-1 May imports continue to be governed by the pre-amendment regime - with an explicit protection for pending assessments, refund claims, and appeals;

(ii) Publish a Tariff-Heading-wise table (with accompanying FAQ) showing, for each of the 54 tarrified Headings, the pre-amendment effective rate (Schedule + notification) and the post-amendment Schedule rate - to eliminate interpretational ambiguity at the operational level;

(iii) Clarify through a Circular that Social Welfare Surcharge under Section 110 of the Finance Act 2018 shall not increase as a consequence of the tarrification exercise alone - and confirm that Notification No. 03/2026-Customs has been issued to maintain the overall effective incidence; and

(iv) Extend the advance ruling mechanism under Section 28-I (recently extended to 5-year validity) by publishing binding Tariff Classification Guidance Notes for the 54 tarrified Headings, to pre-empt disputes that may arise in the first 12 months of post-tarrification operation.

With these administrative measures, the benefits of tarrification - simplification, transparency, and reduced compliance friction - can be realised without producing an unintended wave of transitional disputes. The 1st May 2026 effective date gives the trade and the administration adequate time to prepare; early and clear CBIC guidance will be essential to ensure that the transition delivers on its structural promise.