Office Home & Business 2021 • One-time purchase for 1 PC or Mac • Classic 2021 versions of Word, Excel, PowerPoint, and Outlook • Microsoft support included for first 60 days at no extra cost • Compatible with Windows 11, Windows 10, or macOS • Works with Microsoft Teams For one PC or Mac. For one person Office 2021 is a one-time purchase that comes with classic apps like Word, Excel and PowerPoint for PC or Mac, and does not include any of the services that come with a Microsoft 365 subscription. One-time purchases don’t have an upgrade option, which means if you plan to upgrade to the next major release, you’ll have to buy it at full price.