Updated: August 2026. Office 2021 for Mac still handles many standard tasks. Nevertheless, new features, current macOS versions and the remaining support period increasingly favour Office 2024. This comparison explains who benefits from upgrading.
Office 2021 and Office 2024 compared directly
| Criterion | Office 2021 for Mac | Office 2024 for Mac |
|---|---|---|
| Licence model | One-time purchase | One-time purchase |
| Core applications | Word, Excel, PowerPoint and Outlook, depending on the edition | Word, Excel, PowerPoint and Outlook, depending on the edition |
| Interface | Older design | More modern design and improved accessibility |
| Excel | Solid standard features | New text and array functions plus further improvements |
| Word | Traditional document editing | Improved recovery and updated usability |
| macOS focus | Older product generation | Designed for current Mac systems |
| End of support | 14 October 2026 | 10 October 2029 |
The most important issue in 2026: support
According to Microsoft, Office 2021 reaches the end of support on 14 October 2026. After that date, regular security updates will no longer be provided. Anyone who uses Office for business, processes sensitive documents or plans to keep using their Mac for longer should schedule the upgrade in good time.
Office 2024 is supported until 10 October 2029, providing a significantly longer remaining maintenance period.
Which improvements matter in everyday use?
The difference is not immediately visible in every document. Office 2024 becomes particularly relevant for extensive Excel files, modern macOS workstations and higher requirements for accessibility and stability.
- new Excel functions for text, arrays and data processing
- modernised user interface
- improved recovery in Word
- updated presentation features in PowerPoint
- better alignment with current macOS versions and Apple silicon
Current macOS requirements
Microsoft generally supports Office for Mac on the three latest major macOS versions. New installations of Office 2024 for Mac currently require macOS Sonoma or later. Macs with Intel processors and devices with Apple silicon are supported as long as a compatible macOS version is installed.
Before purchasing, check “About This Mac” to identify the installed macOS version and processor. A technically powerful Mac may still be unsuitable if it can no longer receive a supported macOS version.
When is the upgrade worthwhile?
An upgrade is recommended if:
- you want to continue using Office 2021 productively after October 2026,
- you regularly work with sensitive or business documents,
- you need the new Excel functions,
- you use a current Apple silicon Mac, or
- you want a more modern perpetual version with longer-term support.
You can remain with Office 2021 for the time being if: your existing installation runs reliably, you only edit simple offline documents and you will replace the Mac or Office before support ends. For security-sensitive or business use, however, this transitional solution is only appropriate for a limited time.
Which Office 2024 version for Mac?
- Office Home 2024 for Mac for standard private use
- Office Home & Business 2024 for Mac with Outlook and business usage rights
- Office Standard 2024 for Mac for an expanded range of applications
- Office 2024 for Mac with Word, Excel, PowerPoint and Outlook
Conclusion
In 2026, Office 2024 is not only a feature upgrade but primarily a decision in favour of longer support. Anyone who continues to use Office 2021 regularly should plan the switch because support ends in October 2026. Office 2021 may be sufficient for occasional offline use in the short term; in the long term, Office 2024 offers the more secure perspective.
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