Office 2021 vs Office 2024 vs Microsoft 365
Compare Microsoft’s three Office options — features, pricing, updates and device limits — to pick the right one.
Last updated · January 2026
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Microsoft currently sells three Office families. This comparison helps you choose.
01Office 2021
- One-time purchase, permanent license
- Classic apps: Word, Excel, PowerPoint, Outlook
- Supported with security fixes until October 2026
- One PC or Mac (5 with Pro Plus)
02Office 2024
- One-time purchase, permanent license
- Latest perpetual feature set, updated UI
- Supported until October 2029
- Best “buy once” choice today
03Microsoft 365
- Subscription (yearly/monthly)
- Always-updated apps + 1 TB OneDrive
- All devices — PC, Mac, tablet, phone
- Best for families and multi-device users
04Quick decision
One PC, lowest cost: Office 2024. Several devices or cloud storage: Microsoft 365. Maximize savings on multiple PCs: Office 2021 Pro Plus five-device edition.
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