Buying Microsoft Office today usually comes down to one decision: pay once for Office 2021, or subscribe to Microsoft 365? Both give you Word, Excel, PowerPoint and Outlook — but the way you pay, and what you get, are very different. Here’s a clear head-to-head to help you choose.
Quick Verdict
- Office 2021 — best if you want to pay once for one PC, with no recurring fees, and you mainly use the core apps.
- Microsoft 365 — best if you want the latest features, 1 TB of cloud storage, and Office across multiple devices.
Office 2021 vs Microsoft 365 — Head to Head
| Office 2021 | Microsoft 365 | |
|---|---|---|
| Payment | Pay once, for one PC | Subscription, every year |
| Apps | Word, Excel, PowerPoint, Outlook, Access, Publisher | Same — always the newest versions |
| New features | Security updates only | Continuous new features |
| Cloud storage | — | 1 TB OneDrive |
| Devices | One PC per key | Multiple devices (per plan) |
| Ongoing cost | None | Recurring fee, forever |
The Cost Difference Over Time
This is where the two really diverge. Microsoft 365 charges you every year — so the longer you use it, the more you pay. Office 2021 is a single payment for one PC: once it’s yours, there are no further fees. For a single computer used for everyday documents and spreadsheets, a one-time Office 2021 license usually pays for itself within the first year — and at our prices, even faster.
Choose Office 2021 If…
- You use one main PC and want to avoid recurring fees
- You mainly use Word, Excel, PowerPoint and Outlook
- You don’t need cloud storage or brand-new features every few months
Choose Microsoft 365 If…
- You want Office on several devices (and for your family)
- You rely on 1 TB OneDrive cloud storage
- You always want the very latest features
Where to Buy
- Office 2021 Pro Plus — genuine, pay once for one PC
- Microsoft 365
Both genuine and delivered instantly on your order confirmation page.
Frequently Asked Questions
Is Office 2021 a subscription?
No. Office 2021 is a single payment for one PC — no yearly fee. Only Microsoft 365 is a subscription.
Does Office 2021 get new features?
It receives security updates but not new feature releases. For continuous new features, you’d need Microsoft 365.
Which is cheaper long-term?
For a single PC, Office 2021 is usually cheaper over time because there’s no recurring fee.
Can I install one Office 2021 key on more than one PC?
Each key activates one PC. To cover more computers, you’ll need a key for each.