The cost of long-term borrowing has risen sharply across major economies as bond investors demand higher returns amid persistent inflation, expanding debt issuance and reduced central-bank purchases. The shift marks a departure from the period following the global financial crisis, when low interest rates and quantitative easing made government financing considerably cheaper.
According to MAT, the US 10-year Treasury yield reached 5.34%, its highest level since 2002. Britain’s 30-year government bond yield reached 6%, while long-term borrowing costs in France and Japan climbed to levels not recorded for decades. Across the Group of Seven (G7) economies, the average benchmark 10-year yield reached 4%, the first time since 2008.
Rising Debt Supply and Changing Investor Demand
Inflation remains a major factor behind the increase in yields, but developments in debt markets are also contributing to the repricing. Governments are issuing more bonds while corporations are also increasing their borrowing. At the same time, central banks no longer represent the large, structural source of demand for government securities that they were during quantitative easing programmes.
Changes to pension systems and investor behaviour have further affected demand for long-dated bonds. The result is a larger volume of securities competing for a pool of savings that has not expanded at the same pace.
The shift follows years in which governments became accustomed to inexpensive debt, straightforward refinancing and central-bank purchases of substantial volumes of securities. Public spending during the pandemic reinforced that financing environment.
Higher Yields Increase Fiscal and Corporate Financing Pressures
Rising bond yields feed into borrowing costs across the economy, affecting mortgage rates, corporate financing and government interest payments. Countries with substantial budget deficits face particular pressure because higher interest expenses can reinforce existing fiscal imbalances. Additional debt increases the cost of servicing public liabilities, which can further widen deficits and prompt investors to demand higher risk premiums.
This creates a potentially adverse cycle, particularly in countries where political constraints make spending reductions or tax increases difficult to implement.
Investment Demand Provides an Alternative Explanation
Higher yields may also reflect expectations of stronger economic growth and increased demand for capital. Investment in artificial intelligence, defence, energy systems and infrastructure requires substantial financing, adding to competition for available funds.
If these investments generate productivity gains, higher borrowing costs could accompany a more dynamic economic environment. If the resulting projects fail to deliver stronger output, governments and companies could instead face expensive financing obligations without corresponding productivity improvements.
