Key Highlights

• Petrol export levy increased to ₹1.5 per litre from zero.

• Diesel export levy increased to ₹25 per litre from ₹24.

• ATF export duty reduced to ₹19 per litre from ₹19.5.

• Revised rates came into effect from September 1 and apply for the next fortnight.

• The changes affect petroleum product exports, not petrol and diesel sold in the domestic market.

• Higher export levies could reduce the attractiveness of overseas sales for Indian refiners.

• Refiners with strong domestic marketing networks may have greater flexibility to redirect volumes within India.

• West Asia tensions, crude prices, refining margins and global fuel demand will remain important factors for the sector.

India Revises Petroleum Product Export Duties

The Government of India has once again changed the export duties on petroleum products as global fuel markets remain volatile due to continuing tensions in West Asia. Under the latest revision, the levy on petrol exports has been increased to ₹1.5 per litre from nil, while the diesel export levy has been raised to ₹25 per litre from ₹24. At the same time, the export duty on aviation turbine fuel, or ATF, has been reduced slightly to ₹19 per litre from ₹19.5.

The revised rates came into effect from September 1 and will apply for the next fortnight. The changes are part of the government's regular review of petroleum-product export levies, which are adjusted according to changes in international crude oil and refined-product prices.

One of the most important points for consumers is that the latest revision does not increase the existing excise duty on petrol and diesel sold in India. The new rates apply to exports of petroleum products. Therefore, the latest decision does not directly increase the tax paid by Indian consumers when they purchase petrol or diesel at domestic fuel stations.

Petrol Export Levy Returns After a Brief Removal

The most notable change in the latest revision is the reintroduction of the petrol export levy. The government had reduced the petrol export duty to zero in its previous August 15 revision, but the levy has now returned at ₹1.5 per litre.

The move indicates that international market conditions have changed enough for the government to increase the tax burden on overseas petrol sales again. When international refined-product prices rise, exporting fuel can become more attractive for Indian refiners because overseas sales may offer better returns than selling the same products in the domestic market.

By imposing an export levy, the government can reduce this difference in returns and make it less attractive for refiners to shift large volumes toward overseas markets. This can help maintain adequate supplies within India while also allowing the government to collect additional revenue when export prices are favourable.

Diesel Export Duty Increased to ₹25 Per Litre

The export levy on diesel has also been increased by ₹1 per litre to ₹25. Of this amount, ₹24 is collected through Special Additional Excise Duty, while the remaining ₹1 is collected through Road and Infrastructure Cess.

The diesel levy therefore remains considerably higher than the petrol export levy. This reflects the different market conditions and policy treatment applied to individual petroleum products.

For refiners, the higher diesel levy can reduce the net amount received from overseas sales. The actual effect on earnings, however, will depend on several factors, including export volumes, international diesel prices, refining margins and the ability of refiners to sell additional volumes in the domestic market.

ATF Export Duty Cut Provides Limited Relief

While petrol and diesel export duties have increased, the government has moved in the opposite direction for aviation turbine fuel. The ATF export duty has been reduced by ₹0.50 per litre to ₹19 from ₹19.5.

The reduction provides some relief to companies exporting aviation fuel, but its direct impact should not be overstated. The change concerns the export levy on ATF and does not represent a direct reduction in the price of aviation fuel paid by Indian airlines.

Domestic ATF prices are influenced by international fuel prices, currency movements and other market factors. Therefore, Indian airlines should not be expected to see an immediate benefit simply because the ATF export duty has been reduced.

The latest decision should instead be viewed as a change in the economics of exporting aviation fuel.

Why the Government Is Adjusting Export Levies

The government's broader objective is to balance domestic fuel availability with the interests of refiners and the need to collect additional revenue. The fortnightly export-duty mechanism was introduced on March 27, 2026, amid growing tensions in West Asia and concerns about global energy markets.

India is one of the world's largest consumers and importers of crude oil. At the same time, the country has developed a large refining industry and exports significant quantities of refined petroleum products.

This creates a unique situation for the Indian economy. Higher global crude prices increase the cost of importing crude oil, but higher refined-product prices can also improve the potential returns available to refiners selling products overseas.

When international prices become significantly more attractive, refiners may have a stronger reason to export petrol and diesel rather than sell them in the domestic market. Export duties can reduce this incentive and encourage refiners to keep sufficient volumes available within India.

Impact on Indian Oil Refiners

The latest changes are likely to be closely watched by India's major oil refining companies. Reliance Industries, Indian Oil Corporation, Bharat Petroleum Corporation and Hindustan Petroleum Corporation all have significant exposure to refining and petroleum-product markets, although the impact of the new levies will differ from company to company.

The key factor is the share of each company's production that is exported and the type of products being exported. A refiner with greater exposure to overseas petrol and diesel sales could face a larger impact from higher export duties than a company that sells a larger share of its output in the domestic market.

Refinery configuration and product yields also matter. Different refineries produce different mixes of petrol, diesel, ATF and other petroleum products. As a result, the same export-duty change can have different effects on individual companies.

Domestic marketing networks are another important factor. Companies such as Indian Oil, BPCL and HPCL have large networks across India's domestic fuel market. If export economics become less attractive, these companies may have greater flexibility to redirect some volumes toward domestic customers.

Reliance Industries Faces a Different Export Exposure

Reliance Industries has a large and globally connected refining business, making international refined-product prices and export economics important factors for its energy operations.

The company's large refining complex has significant exposure to global petroleum-product markets. As a result, changes in export duties can influence the attractiveness of sending products overseas, particularly when international refining margins are strong.

However, the impact of the latest duty changes should not be viewed in isolation. Refining margins, crude prices, product cracks, export volumes and the overall product mix will ultimately determine how much the new levies affect the company's earnings.

This means that investors should focus on the combined effect of market prices and taxes rather than assuming that a higher export duty will automatically result in a similar decline in refinery profitability.

Domestic Fuel Prices Remain Unchanged by This Revision

For Indian consumers, one of the most important aspects of the latest decision is that the changes do not directly affect the existing excise duty on petrol and diesel sold in the domestic market.

The revised levies are linked to exports. Therefore, the announcement should not be interpreted as a new tax increase on petrol or diesel purchased by consumers within India.

Domestic fuel prices can still change because of other factors, including crude oil prices, exchange-rate movements, marketing decisions and government policy. However, those factors are separate from the specific export-duty changes announced in this revision.

West Asia Crisis Keeps Energy Markets Uncertain

The latest policy change comes at a time when global energy markets remain sensitive to developments in West Asia. Geopolitical tensions can affect crude supply routes, shipping costs, refinery operations and global fuel prices.

For India, these risks are particularly important because the country imports most of its crude oil requirement. A sustained increase in international crude prices could raise India's import bill and put pressure on inflation and the rupee.

At the same time, higher international refined-product prices can improve export opportunities for Indian refiners. This creates a difficult balance for policymakers because the same global price increase can raise India's import costs while improving the potential returns available to exporters of refined products.

The windfall tax mechanism allows the government to capture part of these additional gains while also discouraging excessive exports during periods when domestic fuel security becomes more important.

What Higher Export Duties Mean for Refinery Margins

The impact of the latest changes on refinery earnings will depend largely on the relationship between international product prices and domestic market conditions.

If global petrol and diesel prices remain high and export margins are attractive, higher export duties could reduce the net realisation earned by refiners on overseas sales. Companies with significant exposure to exports could therefore face some pressure on margins.

However, refiners may redirect part of their production toward the domestic market if domestic demand is strong enough. This could reduce the overall impact of the export levy.

On the other hand, if international product prices fall and export margins become less attractive, the economic impact of the tax could become smaller. In that situation, refiners would already have less incentive to export, meaning the additional levy would have a smaller effect on their decisions.

What Investors Should Watch

For investors tracking India's oil and gas sector, the focus should remain on several factors rather than the tax changes alone. Crude oil prices, gross refining margins, petrol and diesel product cracks, export volumes and domestic fuel demand will all play an important role in determining the earnings impact.

The level and duration of the export levies will also matter. If duties remain elevated for an extended period, refiners with greater dependence on overseas product sales could face more pressure. If global prices normalise and the government subsequently reduces the levies, the impact could become less significant.

Investors should also monitor the product mix of individual refiners. A company with higher exposure to products affected by the new duties could experience a different impact from a refiner with a larger domestic sales base or a different production mix.

Policy Could Change Again as Global Prices Move

The latest revision also highlights how quickly the policy environment can change. Petrol has moved from a zero export levy to ₹1.5 per litre, diesel has increased from ₹24 to ₹25 per litre, while ATF has moved down from ₹19.5 to ₹19 per litre.

This product-specific movement shows that the government is not applying a single tax rate across all petroleum products. Instead, the levies are being adjusted according to market conditions for individual products.

As a result, investors should expect further changes if international crude and refined-product prices move significantly in either direction. The next revisions could have a direct impact on export economics and refinery earnings expectations.

Conclusion

India's latest revision of petroleum-product export duties is primarily a response to volatile global energy markets and the continuing uncertainty caused by tensions in West Asia. The government has increased the petrol export levy to ₹1.5 per litre and the diesel levy to ₹25 per litre, while reducing the ATF export duty to ₹19 per litre.

The changes do not directly increase taxes on petrol and diesel sold in the Indian domestic market. Instead, they affect the economics of exporting refined petroleum products and are intended to ensure that refiners do not divert excessive volumes overseas when international prices make exports significantly more attractive.

For oil refiners, the impact will depend on export exposure, product mix, refining margins and domestic demand. Companies with strong domestic distribution networks may have greater flexibility to redirect volumes within India, while refiners with greater exposure to international sales could face more pressure if export duties remain high.

For investors, the key factors to watch are crude oil prices, refining margins, product cracks, export volumes, domestic demand and future government revisions. The latest move is best viewed as a tactical response to changing global energy conditions rather than a structural increase in India's domestic fuel taxation.