Microsoft Taps Bond Market in Latest Wave of AI Debt Financing
Microsoft plans to raise at least $25 billion through bonds split into 10 parts, its first new long-term debt issuance since 2017, to fund AI infrastructure.
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what happened
Microsoft is preparing a large bond sale. According to a filing with the SEC, the company is issuing debt split into 10 parts. Bloomberg reported that the sale will raise at least $25 billion, though Microsoft did not confirm the figure when speaking to Barron's.
Microsoft is the last of the five largest hyperscalers to turn to the debt market. Alphabet, Amazon, Meta and Oracle have already borrowed to finance data center buildouts for AI. Per Bloomberg data, some of the new bonds will not mature for 40 years, a term that lets companies lock in today's interest rates.
why it matters
For the bond market, this is a large supply of high-quality debt. Barron's notes that financially sound companies now pay an average premium of 0.86 percentage points over Treasuries, down from 1.3 points three years ago. Microsoft holds an AAA rating and positive free cash flow, so demand for its paper is likely to be strong. Lower-rated issuers face far wider premiums, now averaging 13.07 points, the highest since the pandemic.
market impact
US corporate bonds: a large new supply adds pressure, but demand for top-rated debt remains strong
- US corporate bonds mixed — large new supply weighs on prices, while the issuer's top credit rating supports demand
tags
instruments
sources
- Microsoft Issues New Bonds, Adding to AI Debt Spree — Barrons.com, 29 October 2026 at 19:00 UTC
prepared by the newsmetry newsroom with ai assistance from the sources listed below. not investment advice.
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