India Copper Tax Break Could Unlock $3.6B in Working Capital

Finance and markets readers should view this as a potential capital-efficiency tailwind for Indian metal companies. The $3.6 billion locked in GST float suppresses return on capital and constrains expansion exactly when record copper prices above $14,700 a ton have inverted inventory incentives. A cut to 5% would not alter the global price, but it would reclassify working capital as deployable cash, with direct implications for Hindalco's three-month concentrate cycle and the sector's investment trajectory.

Indian primary copper producers are formally asking New Delhi to cut the Goods and Services Tax on a range of copper products to 5% from 18%, arguing that record London Metal Exchange prices—now above $14,700 a ton—are locking up billions of dollars in working capital across the supply chain. Rohit Pathak, president of the Indian Primary Copper Producers Association, said on September 23 that the industry body is in talks with the government and that the lower rate could unlock as much as $3.6 billion in capital currently tied up in tax payments.

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The $3.6 billion locked in GST float suppresses return on capital and constrains expansion exactly when record copper prices above $14,700 a ton have inverted inventory incentives.

The mechanics are straightforward but powerful. The upfront GST is borne by primary producers purchasing feedstock for processing and by downstream manufacturers buying copper products. In a normal input-credit system, the tax would eventually net out, but the timing mismatch creates a substantial float. At current record prices, that float has expanded dramatically because the 18% levy is calculated on a much higher value per ton. For Hindalco Industries Ltd, which operates on a roughly three-month concentrate cycle, the cash is trapped for an entire processing window before credits can be realized. A cut to 5% would reduce the working capital tied up per ton by roughly 13 percentage points of price, a meaningful liquidity release even before demand-side effects.

India has been structurally import-reliant since the 2018 shutdown of Vedanta Ltd's Sterlite smelter. That closure removed a major domestic refining asset and forced Indian buyers to purchase more copper from global markets, exposing them to LME price moves, freight, and import duties before GST is applied. The record rally, which has set a series of highs in 2026 and pushed copper above $14,700 a ton this month, is therefore amplifying India's external vulnerability. The industry's request is not only about tax policy; it is a signal that domestic capacity constraints are making the country more sensitive to global price shocks.

The downstream reaction is already visible. Cable makers and dealers are sharply reducing inventories because financing copper stockpiles at these prices is prohibitively expensive. Pathak noted that inventories are now measured in days rather than weeks. That hand-to-mouth purchasing pattern can create its own fragility: if demand spikes or imports are delayed, the system has very little buffer. A GST cut would not lower the international copper price, but it would reduce the domestic carrying-cost wedge and may allow supply chain participants to hold slightly more inventory without the same financial penalty.

For investors and market watchers, the proposal intersects with a multibillion-dollar domestic expansion push in the Indian copper industry. If the government grants the lower 5% rate, producers would see balance-sheet relief and improved free cash flow, although the direct revenue impact may be limited. The $3.6 billion estimate is essentially trapped cash that could otherwise be deployed toward industry expansion, supplier payments, or debt reduction. That capital-efficiency argument is likely to resonate in policy circles, especially given India's broader infrastructure and electrification goals.