5% more for paying monthly: what changes on 1 October, and when not to switch
From 1 October 2026 Microsoft will add a 5% uplift to CSP software subscriptions on annual terms billed monthly: it names Windows Server, SQL Server, CALs and System Center, and leaves the list open. The product does not change; the price of money does. The full arithmetic — that 5% works out at borrowing at roughly 11% a year — why your date is not 1 October but each line's renewal date, and the cases where moving is not worth it.
Microsoft 365
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