Key Highlights

• The US has enacted a new law giving the President authority to impose tariffs of up to 100 percent on countries buying Russian oil and gas.

• The legislation does not automatically impose a 100 percent tariff on Indian goods.

• India remains heavily dependent on imported crude oil, making Russian oil an important part of its energy supply.

• A reduction in Russian crude purchases could increase sourcing costs and affect refinery margins.

• Higher global crude prices could increase India's import bill and put pressure on inflation and the rupee.

• Indian exporters could face higher costs and weaker demand if the US applies additional tariffs.

• India's goods exports to the US reached $42.79 billion during April to August, up from $40.39 billion a year earlier.

• The eventual impact will depend on the tariff rate, products covered, exemptions, India's response and the outcome of India US trade negotiations.

US Sanctions Law Creates Fresh Pressure on India

The India US economic relationship has come under renewed pressure following the signing of the Lindsey O Graham Sanctioning Russia and Iran Act of 2026 into law on September 18. The legislation gives the US President authority to impose tariffs of up to 100 percent on countries that purchase Russian oil and gas. India and China are among the major economies that could potentially be affected because of their purchases of Russian crude.

However, an important distinction needs to be made. The new law does not automatically impose a 100 percent tariff on Indian goods. Instead, it creates a legal mechanism that allows the US administration to take such action. The actual tariff rate, products covered, timing of implementation and any possible exemptions would depend on subsequent decisions by the US administration.

This distinction is important for investors because the maximum tariff mentioned in the legislation should not be treated as an immediate blanket tariff on all Indian exports to the US. The final economic impact will depend on how Washington uses the authority provided by the new law.

Why Russian Oil Matters for India

The issue is particularly important for India because the country is one of the world's largest crude oil importers. Russian crude has become an important part of India's energy supply in recent years, partly because Russian barrels have often been available at competitive prices.

India's Ministry of External Affairs has maintained that energy security remains a major priority and that the country will continue sourcing oil from diversified suppliers based on market conditions. The government has also indicated that measures targeting countries purchasing Russian energy could have wider implications for India US relations and international energy markets.

For India, therefore, the issue is not simply about whether the country can continue buying Russian oil. The larger question is what happens to the cost and availability of crude if Russian supplies become more difficult to access.

Higher Oil Costs Could Affect the Indian Economy

If Indian refiners are required to reduce their purchases of Russian crude and replace them with supplies from other producers, their procurement costs could increase. The impact would depend on the price difference between Russian crude and alternative supplies, global crude prices, shipping costs and the availability of suitable grades of oil.

A rise in crude prices can spread through the wider economy because oil is used directly and indirectly across transportation, logistics, aviation, chemicals, plastics and manufacturing. Higher fuel and input costs can increase operating expenses for companies and potentially contribute to higher consumer prices.

For India, higher crude prices can also increase the country's import bill. A larger import bill can put pressure on the current account and the Indian rupee, particularly if global oil prices remain elevated for an extended period.

This makes the Russian oil issue important well beyond the energy sector. A change in crude sourcing could affect inflation, currency markets, corporate costs and overall economic growth.

Impact on Indian Oil Refiners

Indian refiners are likely to remain at the centre of the market's attention as the situation develops. Companies such as Reliance Industries, Indian Oil Corporation, Bharat Petroleum and Hindustan Petroleum could see changes in their operating environment if Russian crude availability or pricing changes significantly.

The impact, however, will not necessarily be the same for every refiner. Company-level outcomes will depend on crude sourcing arrangements, the mix of crude processed, existing inventory, refining margins and the ability to adjust purchasing strategies.

A reduction in access to lower-cost Russian crude could increase input costs and affect refining profitability. At the same time, changes in global product prices and refining margins could partly offset or amplify that impact. Investors should therefore look at crude differentials, refining margins and company-specific sourcing data rather than assuming that the policy will have the same effect across all refiners.

Global Crude Prices Become a Key Risk

Another major concern is the potential impact on global oil markets. If sanctions and tariff pressure reduce the availability of Russian crude in international markets, global supply could become tighter.

A tighter oil market could push crude prices higher, although the actual price response would depend on how much Russian supply is affected and how quickly other producers can replace those barrels.

For India, higher crude prices would increase the cost of importing energy. This could put pressure on the country's trade balance and currency while also raising costs for oil-intensive industries.

Companies involved in upstream oil production could experience a different impact because higher crude prices can increase their revenue potential. This highlights why investors need to assess the policy change across the entire energy value chain rather than treating it as uniformly negative for the Indian market.

US Tariffs Create a Second Risk for Indian Companies

The energy issue is only one side of the problem. The new US law also creates a potential risk for India's exports because the US is India's largest export destination.

Indian goods exports to the US reached $42.79 billion during April to August, compared with $40.39 billion in the corresponding period a year earlier. This makes the US market particularly important for several Indian industries.

If the US eventually imposes significantly higher tariffs on Indian products, exporters could face higher costs for US customers, weaker demand or pressure on profit margins. The impact would vary considerably between industries depending on their dependence on the US market and their ability to pass higher costs on to customers.

Textiles and apparel, gems and jewellery, engineering goods, pharmaceuticals, chemicals, electronics and other manufacturing exporters are therefore among the industries that investors may need to monitor more closely.

Previous Tariff Changes Show the Possible Impact

Data cited by Business Standard provides some indication of how changes in US tariffs can affect Indian export flows. India's average monthly exports to the US fell to around $6.5 billion between September 2025 and February 2026 when Indian exports faced 50 percent tariffs, compared with around $8.1 billion in the preceding six months.

Exports later recovered to around $8.5 billion per month between March and August 2026 as the tariff rate declined to 10 percent.

These figures do not establish a direct cause and effect relationship by themselves because export flows can also be influenced by global demand, product prices, exchange rates and other factors. However, they highlight why changes in US trade barriers are important for Indian exporters.

India US Trade Negotiations Become More Important

The Russian oil issue could also complicate ongoing India US trade negotiations because energy purchases and tariffs on Indian exports are now becoming more closely connected.

India faces a difficult policy balance. The country needs affordable and reliable energy supplies while also protecting access to one of its most important export markets.

The eventual outcome could depend on negotiations between the two countries. Exemptions, waivers, product-specific treatment or a broader trade agreement could reduce some of the risks facing Indian businesses.

India's government has indicated that it will work with trade and industry bodies to assess the implications and protect the country's trade and economic interests. This suggests that the issue is likely to remain an important part of India US economic discussions in the coming months.

Impact on the Indian Rupee and Inflation

The rupee could become another important channel through which the policy change affects the Indian economy. Higher crude prices increase the amount India needs to spend on imported energy. If the import bill rises significantly, it can increase demand for US dollars and put pressure on the rupee.

A weaker rupee can make imported goods and raw materials more expensive, potentially adding to inflation. Companies that rely heavily on imported energy or other foreign inputs could therefore face higher costs.

At the same time, exporters can benefit from a weaker rupee because their overseas revenue becomes more valuable in domestic currency terms. However, if higher US tariffs reduce demand, the benefit from currency movements could be limited.

The overall impact will therefore depend on the interaction between oil prices, the rupee, inflation and export demand.

Sectors Investors Need to Monitor

The potential impact of the new US policy will differ significantly across sectors. Oil refining companies are directly exposed to changes in crude sourcing costs and refining margins, while upstream oil producers could experience a different impact if global crude prices rise.

Export-oriented industries will be more sensitive to US tariff decisions. Textiles, engineering goods, pharmaceuticals, chemicals, electronics and other manufacturing businesses with significant US exposure could face pressure if tariffs increase substantially.

Banks and financial companies could also be affected indirectly. A weaker rupee, higher inflation or slower export growth could influence corporate credit demand and business conditions, although the effect would depend on the scale and duration of the policy changes.

Companies with limited US exposure and lower dependence on imported energy may face less direct pressure, but broader changes in currency, inflation and domestic demand could still affect their operating environment.

Three Key Channels for Investors

The latest development creates three major transmission channels for the Indian economy and equity market: energy costs, export competitiveness and currency conditions.

The first is energy. If Russian crude becomes less accessible and alternative supplies are more expensive, India's oil import costs could increase. The second is exports. Higher US tariffs could make Indian products more expensive for American buyers and potentially reduce demand or margins for exporters. The third is the currency. A larger oil import bill or weaker foreign investment sentiment could increase pressure on the rupee.

These three factors are closely connected. Higher oil prices can weaken the external balance, while higher tariffs can affect exports. Together, these developments could influence India's trade position, inflation and currency.

What Investors Should Watch Next

The market impact will depend heavily on developments over the coming weeks and months. Investors should monitor global crude prices, India's Russian crude import volumes, refinery margins and changes in crude sourcing patterns. Any sustained reduction in Russian oil purchases could provide an early indication that Indian refiners are adjusting to the new policy environment.

US tariff announcements will be equally important. Investors should focus on the actual tariff rate, the products covered, possible exemptions and the implementation timeline rather than reacting solely to the maximum 100 percent figure included in the legislation.

Developments in the India US trade agreement will also be important. A negotiated arrangement or tariff exemptions could reduce the risk for Indian exporters, while a broader escalation could increase pressure on companies with high exposure to the US market.

Conclusion

The new US sanctions law represents a significant increase in policy uncertainty surrounding India's purchases of Russian oil, but its final economic impact is not yet determined. The legislation gives the US President the authority to impose tariffs of up to 100 percent on countries purchasing Russian oil and gas, but it does not automatically apply a 100 percent tariff to all Indian exports.

For India, the key issue is the interaction between energy security and trade access. A major reduction in Russian crude purchases could increase India's oil sourcing costs and potentially push global crude prices higher. At the same time, higher US tariffs could affect Indian exporters by increasing the cost of Indian products in the American market.