Andhra Pradesh High Court Rules VAT Inapplicable to Offshore Works Contracts Beyond Territorial Waters

In a significant ruling for offshore energy contractors, the Andhra Pradesh High Court at Amaravati has held that Value Added Tax (VAT) under the Andhra Pradesh Value Added Tax Act, 2005 (APVAT Act), cannot be levied on portions of works contracts executed beyond 12 nautical miles from the coastline. The decision, delivered by a bench comprising Justices R. Raghunandan Rao and T.C.D. Sekhar, underscores the limits of state taxation authority in India's maritime zones. The case involved U.S.-based M/s. Helix Energy Solutions Group Inc., which challenged assessment orders and recovery proceedings related to a sub-sea construction contract in the Krishna Godavari Basin. While remanding the matter for fresh assessment, the court clarified jurisdictional boundaries, potentially shielding similar offshore transactions from state VAT impositions.

This judgment aligns with broader interpretations of maritime law and federal taxation powers, emphasizing that transactions in the exclusive economic zone fall outside state purview. It arrives at a time when India's offshore oil and gas sector is expanding, with companies like Reliance Industries Limited investing heavily in deep-water explorations. The ruling could reduce tax liabilities for international firms operating in these zones, prompting a reevaluation of compliance strategies.

Case Background

The dispute traces back to a 2006 sub-sea construction and diving contract between petitioner M/s. Helix Energy Solutions Group Inc., a U.S.-incorporated company, and M/s. Allseas Marine Contractors S.A. The contract pertained to laying pipelines and installing sub-sea structures, such as suction pipes, manifolds, and umbilical lines, for a gas field developed by Reliance Industries Limited in the Krishna Godavari Basin, located in the Bay of Bengal off Andhra Pradesh's coast. Helix's role involved engineering, planning, fabrication, and installation, with materials supplied by Allseas. Crucially, the petitioner claimed that approximately 80% of the work occurred beyond 12 nautical miles from the Andhra Pradesh coast.

As a non-resident entity, Helix registered under the Service Tax Act and as a dealer under the APVAT Act and Central Sales Tax Act, 1956. Anticipating minimal transfer of goods (less than 1% of contract value), it sought quantification of taxable turnover for tax deduction at source. The Commercial Tax Officer (CTO), Kakinada (first respondent), issued a certificate in Form 501D dated April 10, 2008, pegging taxable turnover at 3.5% of the contract value, subject to 4% tax.

Assessment proceedings began in August 2008 when the CTO issued notices demanding books of accounts related to the works. Helix responded with summaries of expenses, sample agreements, and invoices but did not provide full profit and loss accounts, citing its election under Section 44BB of the Income Tax Act, 1961 (IT Act). This provision deems 10% of gross receipts as profits for non-residents in mineral oil extraction services, exempting them from maintaining detailed books under Section 44AA(2)(iii).

Initial assessment orders dated June 15, 2009, raised a demand of Rs. 2.51 crore for 2007-08 and 2008-09, rejecting Helix's accounts as incomplete. On appeal, the Appellate Deputy Commissioner (second respondent) set aside these orders in August 2009, remanding for reconsideration of objections and accounts. Despite submitting monthly expense details per Rule 31 of the APVAT Rules and vendor contracts, a subsequent notice in October 2009 proposed taxing the entire turnover at 12.5% (after 30% deduction under Rule 17(1)(g)) due to alleged non-production of books, leading to demands of Rs. 19.01 crore and Rs. 60.74 crore.

Final assessment orders dated February 20, 2010, confirmed these demands, prompting garnishee proceedings under Section 29 of the APVAT Act. Helix filed Writ Petition Nos. 6319 and 6321 of 2010 challenging the assessments, and Writ Petition No. 5089 of 2010 against the garnishee notice, all under Article 226 of the Constitution.

The case, reserved in November 2025 and pronounced on December 10, 2025, highlights tensions between state tax enforcement and federal maritime sovereignty, especially in India's booming offshore sector valued at billions.

Arguments Presented

Helix, represented by Senior Counsel Sri V. Sridharan, argued that the CTO arbitrarily rejected its accounts without verification, invoking Rule 17(1)(g) of the APVAT Rules invalidly. This rule allows taxing 70% of disclosed turnover at 12.5% when accounts fail to determine incorporated goods' value, but Helix contended it had produced sufficient records under Rule 31, which mandates separate contract accounts detailing purchases, labor, and expenses—not full IT Act books. Invoking Sections 44AA and 44BB of the IT Act, Helix emphasized its deemed profit election relieved it from maintaining audited accounts in India, rendering the CTO's demand for such documents unlawful.

Further, Helix asserted 80% of work—incorporation of goods into sub-sea structures—occurred beyond 12 nautical miles, outside Andhra Pradesh's territory. Citing the Territorial Waters, Continental Shelf, Exclusive Economic Zone and Other Maritime Zones Act, 1976, it argued territorial waters (up to 12 nautical miles) fall under Union sovereignty per Constitution Entry 54 (tax on sales), barring state legislatures from taxing beyond. Transactions in contiguous (24 nautical miles) or exclusive economic zones (200 nautical miles) are Union domains, with no legislative power for VAT on such sales. Helix supported this with precedents like Madras Marine & Co. v. State of Madras (1986) and Aban Lloyd Chiles Offshore Ltd. v. State of Karnataka (2008), plus commentaries like Halsbury's Laws of England.

It also claimed the applicable tax rate was 4%, not 14.5%, on minimal goods transfer.

The respondents, via counter-affidavit and Government Pleader, countered that as a works contractor, Helix was bound by Rule 31 to maintain detailed accounts, including labor, sub-contractor payments, and machinery hire, which it failed to provide fully—submitting only summaries and samples. Discrepancies in reported contract values for 2007-08 and 2008-09 justified rejection, necessitating Rule 17(1)(g) invocation. On territoriality, they disputed evidence of work beyond 12 nautical miles and argued the APVAT Act applies to all intra-state transfers, regardless of location, without conceding jurisdictional limits.

Legal Analysis

The court's analysis, penned by Justice R. Raghunandan Rao, dissected the interplay of tax statutes and maritime law. It affirmed Helix's IT Act election under Section 44BB, deeming 10% of gross receipts as profits and exempting book maintenance under Section 44AA(2)(iii). Thus, the CTO could not demand absent IT accounts but must assess based on Rule 31 records, which require contract-specific details of goods incorporated, expenses, and payments—not comprehensive ledgers. Rule 17(1)(g) applies only if such Rule 31 accounts are deficient, not as a default for non-IT compliance. The court noted assessing authorities could cross-verify with other laws' records, but here, none existed.

On territorial jurisdiction—the ruling's core—the court invoked the 1976 Maritime Zones Act, defining territorial waters (0-12 nautical miles) under Indian sovereignty (Section 3), contiguous zones (Section 5), continental shelf (Section 6), and exclusive economic zone (Section 7) under Central Government powers. Beyond 12 nautical miles, transactions lack state legislative competence under List II, Entry 54. Neither state nor Union (pre-GST) can tax sales there, as Union power is limited to inter-state/extra-territorial sales.

Precedents bolstered this: Madras Marine & Co. v. State of Madras (1986 3 SCC 552) held state sales tax inapplicable beyond territorial waters; Aban Lloyd (2008) clarified offshore services' taxability; Burmah Shell Oil (1961) and Great Eastern Shipping Co. Ltd. v. State of Karnataka (2020) affirmed maritime zones' federal character. International references, like U.S. United States v. California (1947) and Canadian Offshore Mineral Rights (1967), reinforced exclusive federal control over subsoil resources. The court distinguished territorial waters' Union oversight, leaving open GST impacts under Article 246A.

It deferred factual disputes—like work location and tax rate—to remand, emphasizing evidence-based assessment. This nuanced approach balances procedural fairness with jurisdictional clarity, distinguishing works contracts' "deemed sales" (via goods incorporation) from pure services.

Integrating insights from contemporaneous reports, such as those noting the court's explicit stance on non-levy beyond 12 nautical miles, reinforces the decision's implications for Andhra Pradesh's VAT regime in offshore contexts.

Key Observations

The judgment features pivotal excerpts illuminating the court's rationale:

• On account maintenance: "As there was no duty, cast on the petitioner, to maintain books of accounts or to get them audited... the 1st respondent cannot insist on production of such books of accounts. However, the 1st respondent can ask for the accounts which are required to be maintained under Rule 31."

• On Rule 31 sufficiency: "The requirement of this rule is maintenance of such separate accounts, for each contract, as would be sufficient to set out the value of the goods which had been incorporated... and the expenditure incurred by the contractor, to ascertain the cost of the goods, incorporated in the property."

• On jurisdictional limits: "The sea to a distance of 12 nautical miles from the nearest point of the appropriate base line, would be the territorial waters... Beyond the territorial waters... it would only be Parliament which would have the jurisdiction and power to levy tax... Thus, neither the State Legislature nor the Central Legislature would have the power to levy tax on the sale of goods made beyond the territorial waters of India."

These quotes underscore procedural equity and constitutional demarcations, guiding future tax disputes.

Court's Decision

The High Court disposed of Writ Petitions Nos. 6319 and 6321 by setting aside the February 20, 2010, assessment orders and remanding to the CTO (or successor) for fresh proceedings. The authority must afford Helix opportunity to produce Rule 31-compliant records; if sufficient, assess accordingly; if deficient, specify gaps, allowing rectification before invoking Rule 17(1)(g). Issues of work location (80% beyond 12 nautical miles) and tax rate (4% vs. 14.5%) remain open for factual determination. Writ Petition No. 5089 against garnishee proceedings was closed, as assessments were quashed, with no costs.

Implications are profound: Offshore contractors gain clarity that state VAT applies only within territorial waters, potentially exempting substantial contract portions in exclusive economic zones. This curbs aggressive state taxation, aligning with federalism and UNCLOS principles India follows. Practically, it mandates evidence like GPS logs for location claims, reducing arbitrary demands.

For legal practice, the ruling prompts revisions in works contract audits, emphasizing Rule 31 over IT exemptions. It may spur Union-level taxation reforms for maritime activities, especially post-GST, and influence similar disputes in Gujarat or Maharashtra's offshore hubs. In a sector projected to contribute $100 billion to India's economy by 2030, this fosters investor confidence by delineating tax boundaries, though remands highlight evidentiary burdens on taxpayers.

Broader effects include harmonizing state VAT with maritime sovereignty, averting double taxation fears, and signaling courts' role in interpreting federal structures. As offshore exploration intensifies amid energy transitions, this precedent could standardize compliance, benefiting firms like Helix while challenging states to refine intra-territorial assessments.

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