Governments across the world are spending beyond their means. When America's national debt surged to $US40 trillion last week, it led to a bond market sell-off, which was countered by the US government. It's become an epic battle that could affect every Australian.

US fiscal deterioration is emerging as a growing risk for global markets, with rising Treasury yields potentially putting pressure on equities and limiting the Federal Reserve's…

Bond markets are taking note of growing government debt, and Australia is entering this higher-risk environment less resilient than it could be.