Rising India Faces External Financing Shift as US Bond Yields Climb

A structural shift in global interest rates could test India's external finances as the era of ultra-low borrowing costs fades. In a newly released research report titled 'r in US vs. India - Unnatural Rise And Real Consequences', SBI Capital Markets (SBICAPS) outlines how economic conditions in a rising India contrast with the forces reshaping borrowing benchmarks in advanced economies.

US Treasury yields had tracked downward for multiple decades until late 2021, supported by a global savings glut, high appetite for safe assets, structurally subdued inflation, and successive crisis events. However, that trend sharply reversed following the pandemic. SBICAPS calculates that inflation drove roughly 75% to 85% of the post-2020 climb in nominal Treasury yields, with US consumer price inflation accelerating from 0.6% in mid-2020 to 3.7% by September 2026. Global supply chain fragmentation and deglobalisation could sustain higher inflation expectations, which have touched territory unseen since the early 1980s.

Natural Rates and Rising India

Beyond immediate price pressures, the study examines the natural rate of interest, known as r*—the theoretical rate that balances potential output with price stability under the Holston-Laubach-Williams framework. In the US, convenience yields previously kept r* depressed relative to trend growth. That dynamic is now unwinding due to massive fiscal deficits, expanding debt supply, sovereign credit concerns, reserve diversification away from the dollar, and capital demands tied to artificial intelligence.

A narrower US-India bond yield gap could curb overseas debt inflows used to fund current account deficits.

Conversely, India's real rate drivers reflect fundamental resilience. Steady expansion, anchored inflation expectations under the flexible inflation targeting framework, disciplined fiscal consolidation, improving credit metrics, increased life expectancy, and a rebounding savings rate offer domestic stability. While Indian government securities (G-sec) yields track Reserve Bank of India policy rather than r* directly, the gap between Indian G-secs and US Treasuries has compressed notably over the past decade.

To manage this transition, SBICAPS suggests pursuing export-led growth to rein in the merchandise trade shortfall, offering incentives to attract foreign equity capital, and preserving robust foreign exchange reserves.

Why it matters

Historically, India financed substantial current account deficits through sustained surpluses on its capital and financial accounts. As the yield differential between US and Indian sovereign bonds shrinks, overseas investors face fewer incentives to purchase Indian debt.

This tightening dynamic reduces the external capital buffer available to balance trade shortfalls. Because the sustainable deficit threshold has decreased over time, maintaining external stability will require South Asian policymakers to rely more heavily on trade competitiveness and domestic policy buffers rather than foreign debt inflows.