Rising US debt and yields threaten India's economic stability and currency strength

As the US surpasses $40 trillion in debt, higher Treasury yields are triggering global financial ripples, with India facing mounting pressures on its rupee, capital flows, and bond markets amid rising US interest rates and dollar strength.

India’s exposure to the United States’ $40 trillion debt pile lies less in the risk of an abrupt American default than in the knock-on effect of higher Treasury yields, which are already pushing up borrowing costs around the world and drawing money towards dollar assets. AP reported this week that the benchmark 10-year Treasury yield touched 4.80% on Tuesday, its highest since early 2025, while Reuters has described Treasuries as the global “risk-free” benchmark that helps set prices for everything from mortgages to emerging-market debt. (apnews.com)

The debt milestone itself arrived faster than many investors had expected. The Washington Post reported that US public debt officially passed $40 trillion on 19 August, and the Economic Times, citing Treasury data highlighted by Jefferies strategist Christopher Wood, put the total at $40.05 trillion as of 18 August, up 7.8% from a year earlier. The Post added that the next political flashpoint is already visible: the statutory borrowing cap stands at $41.1 trillion, a level the Treasury is expected to hit early next year unless Congress acts again. (washingtonpost.com)

What has unsettled markets is not simply the size of the debt stock, but the prospect that Washington will have to keep borrowing at ever costlier rates. Reuters said investors have been demanding more compensation for holding longer-dated Treasuries as concerns over supply, inflation risks and fiscal strain build. AP noted that the Congressional Budget Office recently estimated the federal deficit would top $2 trillion this year, or about 6% of the US economy. The Economic Times added that July outlays jumped 21.7% from a year earlier, helping to produce a monthly deficit of about $432 billion and pushing the first 10 months of fiscal 2026 to a $1.799 trillion shortfall, already above the whole of fiscal 2025. (investing.com)

The Treasury has tried to calm the market, but with only limited success. Moneycontrol reported that the department said it would at least double buy-backs of long-dated debt to $4 billion per operation, and Treasury Secretary Scott Bessent signalled they could go higher. Yet the same report said the market response suggested buy-backs alone were not enough to ease worries over inflation, deficits and debt issuance. That matters beyond Washington because, as Reuters explained, a sustained rise in US yields tends to strengthen the dollar and tighten financial conditions abroad, especially for lower-rated borrowers and emerging markets trying to refinance. (moneycontrol.com)

For India, the most immediate pressure points are the rupee, portfolio flows and domestic bond pricing. Business Today cited a net foreign portfolio outflow of $5.7 billion from India in Q2 FY26 and pointed to the India-US 10-year yield spread as a key gauge of relative attractiveness. It also highlighted India’s April 2026 merchandise trade deficit of $28.4 billion, a reminder that a stronger dollar can feed through the external account via oil and gold imports. Moneycontrol quoted BondScanner founder and chief executive Nishchay Nath saying: “US long-term bond yields have climbed to levels last seen almost two decades ago and that can pull some global money away from Indian debt as investors chase safer returns at home, in turn, putting pressure on the Indian rupee. A weaker currency can lift imported inflation and keep our bond yields firmer than they otherwise would be.” (businesstoday.in)

There are also reasons to think the pressure on US yields is coming from more than one source. Hindustan Times reported that Japan, which holds about $1.1 trillion in Treasuries, is being watched closely as its own 10-year government bond yield hovers around 3%, the highest since 1996. The same report said the New York Fed’s latest estimate of R-star, the neutral rate that neither stimulates nor slows the economy, was 1.65% in the second quarter of 2026. It also pointed to surging capital demand from artificial intelligence infrastructure, with companies such as Amazon, Microsoft and Alphabet tapping bond markets at the same time as the US government ramps up issuance. (hindustantimes.com)

That combination helps explain why the US bond sell-off has become a broader market story rather than a narrow debate about public finances. AP said mortgage rates, which tend to track the 10-year Treasury, are near their highest level in a year. Reuters reported that companies issuing new bonds, refinancing old debt or relying on floating-rate loans are among the first to feel the squeeze, and that capital-intensive investment plans can quickly become less appealing. Wood told readers of the Economic Times that a move above 5% in the 10-year yield would be the “obvious trigger point” for near-term equity risk, while Hindustan Times noted that the 30-year Treasury has moved back towards levels last seen in 2007. (apnews.com)

None of this means a US debt crisis is necessarily around the corner. Both Business Today and Moneycontrol stressed that the more immediate issue is not whether Washington suddenly runs out of money, but whether investors continue to absorb the torrent of new Treasury supply without demanding still higher yields. For India, that distinction matters. The headline debt figure is politically dramatic, but the practical questions are whether US rates keep climbing, whether the dollar stays strong and whether overseas money becomes harder and dearer to attract just as Indian borrowers and policymakers are trying to manage growth, inflation and external vulnerability. (businesstoday.in)