Office 2024 vs Office 2021 vs Microsoft 365: Which One Should You Buy?
If you're trying to choose between a one-time Office license and a subscription, you're not alone. The best option depends on how you work: offline vs cloud, solo vs team, and "set-and-forget" vs always-up-to-date.
Quick definitions (in plain English)
- Office 2021: A one-time purchase for classic desktop apps. Microsoft provided security and quality updates under its standard support lifecycle — but see the support-status notice below.
- Office 2024: A newer "perpetual" (one-time) generation similar in spirit to Office 2021, aimed at people who want desktop apps without ongoing subscription fees.
- Microsoft 365: A subscription that includes desktop apps plus cloud services and continuous feature updates (varies by plan).
⚠️ Office 2021 End-of-Support Notice — October 13, 2026
Microsoft ended mainstream support for Office 2021 (including the LTSC edition) on October 13, 2026. This means Microsoft no longer releases security patches, bug fixes, or technical support for Office 2021 products from that date forward. The applications themselves continue to function on your device — end of support does not disable or uninstall the software — but running unsupported software carries increased security risk over time as vulnerabilities will no longer be remediated.
Source: Microsoft Lifecycle Policy — Office 2021 (Microsoft Learn, official lifecycle page).
What to do next:
- If you already own Office 2021 and your security posture allows it, you can continue using it — but be aware that no further patches will be issued.
- If you want a supported perpetual license, consider upgrading to Microsoft Office 2024 Professional Plus, which follows Microsoft's standard support lifecycle beyond 2026.
- If you need ongoing feature updates and cloud features, Microsoft 365 remains a fully supported subscription option.
Side-by-side comparison
| What matters | Office 2021 | Office 2024 | Microsoft 365 |
|---|---|---|---|
| Payment model | One-time | One-time | Subscription |
| Microsoft support status | End of support: Oct 13, 2026 | Supported (standard lifecycle) | Supported (ongoing) |
| Feature updates | Limited after purchase | Limited after purchase | Ongoing updates/new features |
| Cloud collaboration | Basic | Basic | Strong (cloud-first, real-time co-authoring) |
| OneDrive included | Not bundled by default | Not bundled by default | Typically included (often 1 TB per user depending on plan) |
| Microsoft Teams | Not included | Not included | Included |
| Mobile apps | Limited functionality | Limited functionality | Full access with subscription |
| Devices per license | Tied to 1 PC (Retail/OEM) | Tied to 1 PC (Retail/OEM) | Multiple devices (5 for Personal, per-user for Family) |
5-year cost comparison
For a typical individual user, here's roughly what each option costs over five years:
- Office 2021 Pro Plus (via LicenGold): one-time cost, no ongoing fees. Note that Microsoft support ended October 13, 2026 — factor this into your long-term decision.
- Office 2024: similar one-time model to 2021, slightly newer app generation, supported under Microsoft's standard lifecycle.
- Microsoft 365 Personal: roughly $70/year, so around $350 over 5 years — but that includes 1TB of cloud storage and continuous updates.
- Microsoft 365 Family (up to 6 users): roughly $100/year, close to $500 over 5 years, split across the household.
Verdict: If you don't need extra cloud storage, real-time collaboration, or Teams, a one-time Office 2024 license is significantly cheaper over time and remains supported. Office 2021 reached end of support on October 13, 2026, so it is no longer the recommended perpetual option for new purchases. If you rely on cloud sync, multiple devices, or work with a team, Microsoft 365's subscription cost is usually justified by the extra functionality.
Which one is best for you?
Choose Office 2021 if…
- You already own a license and your use case does not require ongoing security patches.
- You prefer a one-time payment and mostly work on one PC in a controlled, low-risk environment.
- You keep documents local and only occasionally share files.
- Note: Microsoft ended support for Office 2021 on October 13, 2026. For new purchases, Office 2024 is the current supported perpetual alternative.
Choose Office 2024 if…
- You want a supported "lifetime-style" desktop license with the newer generation of Office.
- You want to reduce long-term costs versus a subscription while remaining within Microsoft's support lifecycle.
- You don't want your workflow to change frequently due to feature rollouts.
Choose Microsoft 365 if…
- You collaborate in real time and need strong cloud integration.
- You use multiple devices, or want apps and cloud storage bundled together.
- You want the newest features as soon as Microsoft releases them.
- Your household or team needs several licenses under one plan.
Compare and buy: perpetual Office licenses
If you've decided a one-time license is right for you, here are the two current options available from LicenGold:
- Microsoft Office 2024 Professional Plus — Lifetime License: the current supported generation, recommended for new perpetual license purchases. Instant delivery.
- Microsoft Office 2021 Professional Plus LTSC — Lifetime License: the previous generation. Microsoft support ended October 13, 2026; the software continues to function but will not receive further security patches from Microsoft. Available for existing workflow continuity.
Frequently Asked Questions
Do I need internet to use Office?
For basic desktop editing, Office desktop apps work offline. Cloud features — syncing, co-authoring, cloud storage — need an internet connection.
Can I switch from a one-time license to Microsoft 365 later?
Yes. You can move to a Microsoft 365 subscription at any point by signing in with your Microsoft account and subscribing — your existing Office 2021 or 2024 installation isn't affected.
Is a one-time license a safe long-term choice?
For Office 2024, yes — it remains within Microsoft's support lifecycle. For Office 2021, Microsoft ended support on October 13, 2026, meaning no further security patches will be issued. Whether that risk is acceptable depends on your security environment and how you use the software.
How many devices can each option cover?
Office 2021 and Office 2024 licenses are tied to a single PC (Retail licenses are transferable to a new PC; OEM licenses are not). Microsoft 365 covers multiple devices per subscription, depending on the plan.
What happens to my Office 2021 after end of support?
The software continues to work — end of support does not disable the applications. However, Microsoft will no longer release security updates or provide technical support for Office 2021. Over time, unpatched vulnerabilities may represent a security risk. Microsoft's official guidance is to upgrade to a supported version.
Want a genuine Office license with instant delivery? Browse: LicenGold Microsoft Office collection.