Microsoft launches $25 billion bond sale to fund AI infrastructure

Microsoft announced a $25 billion U.S. investment‑grade bond offering, its first since 2017, to finance AI‑related data centres and cloud capacity. The sale was priced on October 29, 2026 and attracted roughly $115 billion in investor orders, more than four times the amount sought. The company expects to spend $170 billion‑$190 billion on capital expenditures for AI infrastructure while preserving cash reserves.

The company says the debt will support its AI expansion while keeping cash on hand, which may affect its balance‑sheet leverage and interest‑expense profile. Analysts note that the strong investor demand reflects confidence in Microsoft’s growth outlook.

  • 1Microsoft plans to raise approximately USD 25 billion through a bond sale, its first U.S. investment‑grade issuance since 2017.
  • 2The bond offering was priced on October 29, 2026 and attracted investor orders worth about USD 115 billion.
  • 3The transaction is scheduled to close on November 4, 2026.
  • 4The sale is structured into 10 tranches with coupons ranging from 4.85% to 6.35%.
  • 5Microsoft generated USD 18.6 billion in free cash flow in its most recent quarter.
  • 6The company projects capital expenditures of USD 170 billion‑190 billion for 2026 to fund AI data centres and cloud infrastructure.

Sources