Global Debt Reaches $365 Trillion as AI and Defense Super-Cycle Drives Structural Borrowing

Global debt expanded by $10 trillion over the first six months of 2026 to hit a record $365.5 trillion, pushing government bond yields in the United States, Japan, France, and the United Kingdom to their highest levels in more than a decade. The Institute of International Finance (IIF) reported Wednesday that emerging markets accounted for $6.5 trillion of the new borrowing, led heavily by China, bringing total emerging market debt past $110 trillion. Advanced economies saw a slower pace of debt accumulation but face mounting interest burdens that are reshaping national budgets.[1][5]

Advanced economies paid more than $3.3 trillion in interest on internationally traded government bonds over the past year. That figure surpasses total global spending on artificial intelligence, which stood at $2.6 trillion, as well as the $3.1 trillion spent on defense and the $2.3 trillion allocated to clean energy. The Washington-based IIF cautioned that these advanced economies now face persistently large deficits and rising interest expenses—challenges that were historically associated with debt-distressed emerging market sovereigns.[1]

Unlike the borrowing spikes that followed the 2008 financial crisis or the 2020 pandemic, the current accumulation is not a crisis response. Emre Tiftik, director of global markets and policy at the IIF, characterized the trend as a structural shift fueled by a technological arms race in AI data centers, defense modernization, and energy transitions. "This time around, there is no specific crisis," Tiftik said on Wednesday. "This is all driven by a super-cycle that is driven by healthcare, energy, AI, and IT and defence-related spending."[5]

Despite the absolute increase in borrowed funds, the global debt-to-GDP ratio currently sits at roughly 310%, which is 25 percentage points below its peak in early 2021. The IIF noted that this apparent improvement is largely an "illusion of stability" created by higher inflation lifting nominal economic output, rather than actual fiscal consolidation or real deleveraging. The report highlighted that governments and non-financial companies accounted for most of the overall increase, with borrowing by both groups reaching fresh record highs.[1][5]

Corporate borrowing tied to artificial intelligence infrastructure has become a major driver of the expansion. Non-financial corporate debt in the United States reached $24 trillion, with private credit loans now accounting for more than 5% of that total, up from roughly 1% in 2014. The Organization for Economic Cooperation and Development (OECD) noted that heavy corporate bond issuance by AI firms is placing upward pressure on yields and the term premium required to hold bonds, which in turn exacerbates fiscal pressures on governments and leads to higher borrowing costs throughout the broader economy.[1][5]

Emerging economies face an immediate refinancing hurdle, with a record $3.5 trillion in debt maturing in 2026. With major central banks maintaining elevated benchmark rates, borrowers rolling over this maturing debt will face significantly higher interest costs. The IIF warned that if local currencies weaken against the dollar, the burden of servicing foreign-currency debt will intensify further for these nations.[1][5]

The OECD warned Wednesday that the pressure from rising yields makes it imperative for governments to curb expenditure, boost the efficiency of public services, and shore up revenue streams. However, with structural spending demands in healthcare and defense remaining largely unaddressed, the IIF cautioned that debt has become a political vulnerability, creating a "vicious cycle between elections and short-term quick fixes, and a long-term vulnerability as the marginal utility of higher debt diminishes."[1]

The IIF expects this dynamic to persist through the end of the decade, as the capital requirements for the global energy transition and artificial intelligence deployment show no signs of abating. For global markets, the defining challenge of the late 2020s will not be a sudden credit freeze, but rather the steady, structural repricing of capital as the world finances its next technological era.[1][5]