AI Bond Sales Strain European Debt

US technology giants have issued roughly $250 billion in dollar-denominated bonds since the start of 2025. This surge in borrowing has increased competition for investment capital in Europe, raising costs for sovereign debt issuers in France, Germany, and Italy. The shift has forced European governments to contend with higher interest rates while managing existing deficits.

Four of the five major US cloud providers, Amazon, Alphabet, Meta, and Oracle, led the charge in 2025. They sold an additional €37 billion in euro-denominated bonds during the same period. Microsoft, the final member of the group to enter the market, recently completed a $25 billion bond sale in dollars. This recent activity caps a year of aggressive capital raising by these firms to fund artificial intelligence infrastructure.

The timeline of this financial shift began with the initial tranches of 2025. As AI buildout costs exceeded $1 trillion, these companies turned to the bond market. By the end of the third quarter, the volume of new issuance had drawn attention from European central banks. The European Central Bank noted in August that the market was adapting but warned of potential spillovers to sovereign debt.

France faces the most immediate pressure. Its public debt stands at 119% of GDP, with a deficit exceeding 5%. Yields on 10-year French bonds have climbed from approximately 3.7% to nearly 5% over the past six months. The government expects its interest bill to rise from €79 billion currently to €91 billion next year. By 2028, that figure is projected to surpass €100 billion, requiring the Finance Ministry to find tens of billions of euros in additional cuts or tax hikes by the end of the decade.

Viktor Hjort, global head of credit strategy at BNP Paribas, describes this dynamic as bond abundance. He states that the presence of hyperscalers is already high enough to create competition within the corporate sector and between corporates and governments. This competition targets available fixed income funds, which typically purchase bonds for regular interest payments. Bond yields jumped again last month, driven by energy prices linked to the Iran war and France’s political crisis.

Goldman Sachs projects that total new AI hyperscaler bond sales will reach $420 billion next year. ING, a Dutch bank, estimates that about €60 billion of that volume will be issued in euros. These figures suggest that the competition for capital will intensify in 2027. European companies are already feeling the strain. Goldman Sachs found that interest costs as a share of sales for firms in the Stoxx 600 index have risen by nearly half since 2022, cutting earnings by more than 5% over that period.

The pressure extends to regional governments. A January study by the Organization for Economic Co-operation and Development compared local bond markets in Belgium, Germany, Spain, Sweden, and Canada. The research found that where AI-related job vacancies were highest, borrowing costs for cities and regions tended to rise. Christos Makridis, the study’s co-author at Arizona State University, noted that this trend contrasts with findings in the United States, where AI investments are linked to lower municipal borrowing costs.

European firms may need to cut investments in new plants, equipment, and research to prioritize loan repayments. This could reduce shareholder payouts as well. The additional billions in new bonds planned for next year will add further pressure to a market already dealing with widening fiscal strains. US Big Tech’s appetite for capital is a key factor in this equation, even if it is not the sole cause of Europe’s current financial challenges.