GST on Petroleum Products in India: Comprehensive Analysis of Future Inclusion, Revenue Impact, Inflationary Dynamics, and Legal Reforms

Executive Summary

The Goods and Services Tax (GST), introduced on July 1, 2017, marked the most radical indirect tax reform in modern Indian history. Designed to replace a fractured web of central and state levies—such as Excise Duty, Value Added Tax (VAT), Service Tax, and Octroi—GST aimed to build a seamless nationwide tax market under the principle of “One Nation, One Tax.”

Despite its success in streamlining supply chains and boosting national revenues, significant exclusions remain. Five major petroleum products—Crude Oil, High-Speed Diesel (HSD), Motor Spirit (Petrol), Natural Gas, and Aviation Turbine Fuel (ATF)—were kept outside the active GST framework under Article 279A(5) of the Constitution of India.

To understand why petroleum remains excluded from GST, one must examine the legacy tax regime that governs energy consumption across India today.

The Legacy Two-Tier Tax Structure

When GST was rolled out, state governments were reluctant to relinquish their primary revenue sources. Consequently, energy and fuel products were split into two distinct operational categories:

1. Products Inside GST: Liquefied Petroleum Gas (LPG), Kerosene, Naphtha, and Furnace Oil. These incur standard GST rates ranging from 5% to 18%.

2. Products Outside GST: Crude Oil, Petrol (Motor Spirit), Diesel (High-Speed Diesel), Natural Gas, and Aviation Turbine Fuel (ATF). These remain subject to Central Excise Duty and State-level Value Added Tax (VAT).

The Cascade Effect (Tax-on-Tax)

Under the non-GST tax regime, state VAT is calculated on top of the base fuel price plus Central Excise Duty. This generates a severe cascading tax effect.

The non-inclusion of petroleum under GST is not an oversight; it is a deliberate constitutional mechanism.

Under the 101st Constitutional Amendment Act, 2016, petroleum products were legally incorporated into the GST framework under Article 279A(5). However, the clause stipulates that petroleum products will only be brought into the active GST network from a date recommended by the GST Council.

This constitutional provision is mirrored in Section 9(2) of the Central Goods and Services Tax (CGST) Act, 2017, which states that the levy on these five specified petroleum goods will take effect only after formal recommendation by the Council and subsequent notification by the Central Government.

3. Structural Pitfalls of Excluding Petroleum from GST

The ongoing exclusion of key petroleum fuels causes systemic distortions across the Indian economy:

1. Embedded Tax Costs & Broken Input Tax Credit (ITC) Chains

Because diesel and petrol are excluded from GST, key commercial sectors using fuel as an input—such as logistics, public transport, manufacturing, mining, and agriculture—cannot claim input tax credit on the excise duty and VAT paid. This embedded tax cost flows directly into the final price of manufactured goods and freight services, driving up general inflation.

2. Double Compliance Burden for Energy Conglomerates

Integrated oil and gas companies (such as IOCL, BPCL, HPCL, and Reliance Industries) must operate under two distinct tax regimes simultaneously:

• GST Regime: Applies to procurement of capital goods, raw materials, operational services, and refined products like LPG and Naphtha.

• Non-GST Regime: Applies to sales of Crude Oil, Petrol, Diesel, Natural Gas, and ATF.

This dual-framework structure mandates dual accounting, separate audit trails, non-creditable cross-tax allocations, and higher administrative compliance costs.

3. Stranded Taxes in Capital Expenditures

Energy infrastructure projects (e.g., natural gas pipelines, refinery expansions, offshore exploration platforms) incur massive GST costs (typically 18%) on procurement of capital equipment, engineering contracts, and construction services. Because the primary outputs (crude oil, natural gas, petrol, and diesel) are exempt from GST, the taxes paid on capital inputs cannot be offset and become a stranded cost, reducing capital efficiency.

4. Financial & Fiscal Reality: The Federal Revenue Tug-of-War

The main obstacle to bringing petroleum under GST is fiscal dependency. Petroleum taxes represent a vital, predictable revenue stream for both the Union and State governments.

States rely heavily on fuel VAT because it provides immediate liquidity with zero dependency on central tax transfers.

If petroleum enters the GST framework:

1. Taxes would be capped under standard GST rate slabs (e.g., a maximum standard rate of 28%).

2. Tax revenues would be split equally between the Centre (CGST) and Destination State (SGST).

3. States would lose the ability to independently alter tax rates to meet fiscal shortfalls.

5. Price Breakdown: Non-GST vs. Proposed GST Structure

To visualize the impact on consumer retail prices, consider this comparative price breakdown for Motor Spirit (Petrol).

(Note: Figures are indicative and structured for comparative analysis based on a base refinery cost of ₹55/liter).

Critical Takeaway

• Under a pure 28% GST rate without additional cesses, retail fuel prices would fall dramatically (from ~₹103 to ~₹76 per liter).

• However, this would create an estimated annual revenue shortfall of ₹2.0 to ₹2.5 Lakh Crore for the Centre and States combined.

• Therefore, bringing petroleum under GST will likely require a Dual-Tax approach or a high Specific Energy Compensation Cess.

6. Phased Implementation Strategy: Natural Gas and ATF First

Given the fiscal risks of a full rollout, a phased transition is the most realistic path forward.

A. Natural Gas

• Why First? Natural gas accounts for a smaller share of overall tax revenues compared to petrol and diesel.

• Economic Benefit: Including natural gas under GST with a low rate (5% or 12%) directly supports India’s policy goal of increasing natural gas from 6% to 15% of the primary energy mix.

• Industry Impact: Cleaner power generation, cheaper fertilizer production (lowering government subsidy burdens), and lower prices for City Gas Distribution (CNG for vehicles and PNG for homes).

B. Aviation Turbine Fuel (ATF)

• Why First? ATF taxation directly affects airline operating costs, with fuel accounting for 35% to 45% of an airline’s expenses in India.

• Economic Benefit: Replacing state-level VAT on ATF (which ranges from 1% to 29% across different states) with a unified 18% or 28% GST with full ITC access would immediately improve airline financial stability and lower domestic airfares.

Phase 2: Diesel and Petrol Integration

• Diesel represents over 40% of refined petroleum product consumption in India and powers logistics, freight, and agricultural machinery.

• Petrol and Diesel integration requires a consensus on a Revenue Neutral Rate (RNR) along with a transparent revenue-sharing framework between the Centre and the States.

7. Macroeconomic Impacts of Fuel GST Inclusion

Logistics expenses currently account for approximately 13–14% of India’s GDP, compared to 8–9% in developed economies. By making diesel eligible for Input Tax Credit under GST, transport and logistics firms can reclaim tax paid on fuel against their output tax liability. This could reduce net freight costs by 10% to 15%, lowering transport overheads across all physical supply chains.

2. Moderating Consumer Inflation (CPI)

Energy prices affect food, pharmaceuticals, consumer goods, and industrial raw materials. Lowering effective fuel tax burdens reduces the cost of goods transportation, dampening primary headline inflation and helping stabilize interest rate environments.

3. Enhancing Export Competitiveness

Indian export manufacturers currently carry non-creditable energy tax costs in their pricing structure. Under GST, exported goods are zero-rated, allowing fuel taxes to be fully credited or refunded. This levels the playing field for Indian manufacturing in international markets.

8. Strategic Roadmap for Policy Makers & Fiscal Frameworks

To successfully transition petroleum into the GST system without disrupting public finances, the GST Council can consider a five-point implementation framework:

1. Adopt a Hybrid Tax Model: Apply the maximum 28% GST slab to petroleum products, alongside a flexible State-level Surcharge / Cess designed to preserve baseline revenue needs while establishing a unified national base price.

2. Provide Full ITC for Commercial Fuel Use: Allow registered businesses, transport fleets, and industrial manufacturers to claim full Input Tax Credit on commercial fuel consumption, eliminating hidden tax costs.

3. Establish a Phased State Revenue Protection Mechanism: Set up a temporary 3-year revenue compensation mechanism for states that experience short-term revenue drops during the initial transition.

4. Deploy Automated Fuel E-Invoicing: Upgrade retail fuel dispenser automation to issue instant electronic invoices integrated with the GST Network (GSTN), reducing tax evasion and streamlining compliance for corporate transport accounts.

5. Align Fuel Taxation with Green Energy Transitions: Over time, gradually replace specific fuel cesses with carbon-indexed taxes to incentivize adoption of electric vehicles (EVs), green hydrogen, and renewable energy sources.

Conclusion

Excluding major petroleum products from the GST framework was a necessary fiscal compromise during the rollout of GST in 2017. However, maintaining this split system permanently creates structural inefficiencies, embeds hidden tax costs across supply chains, and limits the overall efficiency of India’s tax system.

Integrating petroleum into GST—beginning with Natural Gas and ATF, followed by Diesel and Petrol via a hybrid rate model—presents a transformative opportunity for India. It will eliminate tax cascading, lower freight costs, improve industrial competitiveness, and move the country closer to a truly unified, modern tax structure.

Key Takeaway Reference

• Current Status: Excluded under Article 279A(5) of the Constitution [CGST Act Sec 9(2)].

• Taxation Mode: Central Excise Duty (Specific) + State VAT (Ad Valorem).

• Primary Systemic Drawbacks: No Input Tax Credit (ITC), embedded cascading tax costs, dual compliance burdens.

• Proposed Way Forward: Phased inclusion starting with Natural Gas and ATF, moving toward a hybrid 28% GST + specific energy compensation cess model for Petrol and Diesel.

Disclaimer: This comprehensive analysis is published for informational, educational, and policy discussion purposes. Tax laws and statutory rates remain subject to official notifications issued by the Ministry of Finance and the GST Council.