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Although the company has not earmarked entire amount specifically for AI, borrowing comes as tech firms commit substantial sums to data centres, computing infra and AI services.
Microsoft $25 Billion Bond Sale.
Microsoft $25 Billion Bond Sale: Microsoft has priced a $25 billion bond offering, its first US investment-grade bond sale since 2017, as the technology giant seeks to maintain financial flexibility amid rising investment in artificial intelligence (AI) and cloud infrastructure. The deal highlights how even cash-rich technology companies are increasingly tapping debt markets to fund the AI boom.
Microsoft has priced $25 billion worth of senior unsecured notes, with maturities ranging from 2028 to 2066 and fixed interest rates of up to 6.35%. The offering is expected to close on November 4, according to the company’s announcement on October 29.
The proceeds will be used for general corporate purposes, including capital expenditure, working capital, share repurchases, acquisitions and repayment of existing debt. Although the company has not earmarked the entire amount specifically for AI, the borrowing comes as technology companies commit substantial sums to data centres, computing infrastructure and AI services.
The transaction also marks Microsoft’s return to the US investment-grade bond market after more than nine years, with the company last raising funds through a US high-grade debt offering in 2017.
Why is Microsoft borrowing $25 billion despite having billions in cash?
Microsoft’s decision to borrow reflects the scale of its investment requirements to fuel its AI ambitions. The company reported $76.8 billion in cash, cash equivalents and short-term investments as of June 30, 2026, according to its annual report.
However, the cost of developing and operating AI infrastructure has increased substantially across the technology industry. Data centres require large upfront investments in land, buildings, electricity infrastructure, servers, advanced processors and networking equipment.
By issuing bonds, Microsoft can raise additional capital without immediately deploying as much of its existing cash reserves.
This approach also gives the company greater flexibility to fund acquisitions, return money to shareholders and meet other financial commitments while continuing to invest in cloud computing and AI.
AI infrastructure spending is driving Big Tech borrowing
The expansion of generative AI has increased demand for computing power, prompting major technology companies to invest heavily in data centres and related infrastructure. Microsoft’s AI strategy is closely linked to its Azure cloud platform, which provides computing capacity to businesses and AI developers. The company is also expanding AI capabilities across products such as Microsoft 365 and its AI assistant, Copilot.
These services require computing infrastructure capable of processing large volumes of data and handling increasingly complex workloads.
The investment cycle creates a financing challenge. Companies must spend heavily to build computing capacity before they can fully recover those investments through cloud subscriptions, AI services and other revenue streams.
Borrowing allows technology companies to spread the financing burden over time rather than relying exclusively on cash generated by their existing businesses.
Microsoft’s bond sale also comes amid a broader shift in the technology sector, where major companies are increasingly turning to debt markets to finance infrastructure expansion.
Alphabet raised $25 billion through a bond offering in August, while other large technology companies have also sought external funding for their AI-related investments.
The trend has raised questions about how quickly companies will generate sufficient revenue and cash flow to justify their spending.
Microsoft bond sale: Interest rates range up to 6.35%
Microsoft’s $25 billion offering comprises multiple series of floating-rate and fixed-rate notes, allowing the company to borrow across different maturities. The fixed-rate notes carry annual interest rates ranging from 4.85% for notes maturing in 2028 to 6.35% for notes maturing in 2066.
The offering includes $2 billion of notes due in 2028 carrying a 4.85% coupon, $3.25 billion due in 2029 at 5%, and another $3.25 billion due in 2031 at 5.2%.
The company is also issuing $4 billion of notes due in 2036 at 5.55%, $4 billion due in 2056 at 6.25%, and $2 billion due in 2066 at 6.35%.
The remaining fixed-rate notes mature in 2033 and 2046, while two additional tranches carry floating interest rates.
The long maturities allow Microsoft to secure financing for an extended period, reducing its reliance on short-term borrowing that may need to be refinanced more frequently.
However, the interest payments represent a financial commitment that the company must manage alongside its capital expenditure and other obligations.
Strong investor demand supports Microsoft’s borrowing plans
Investor appetite for Microsoft’s debt has been strong. Reports on the offering indicated that orders exceeded $100 billion, substantially more than the $25 billion being raised.
The strong demand reflects investor confidence in Microsoft’s credit profile and its ability to generate cash through established businesses such as cloud computing, software and enterprise services.
Microsoft’s strong credit standing also helps it access debt markets on terms that may be unavailable to companies with weaker balance sheets.
The company has said it intends to use the proceeds for general corporate purposes rather than allocating the entire amount to a single investment programme.
Its return to the bond market after a prolonged gap also suggests that large technology companies may be willing to borrow when market conditions and financing terms are attractive.
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Ask News18Microsoft has priced a $25 billion senior unsecured notes offering, marking its first US investment-grade bond sale since 2017 when it last raised funds through a US high-grade debt offering.
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November 03, 2026, 11:23 IST
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