Equipping 3 computers with Windows and Office: the real cost
Three computers to equip, the same question every time: how much does it really cost, including the operating system and office suite? The answer depends less on the software than on the purchasing model. Here are the four possible routes, their actual cost, and what each entails beyond the listed price.
Setting out the calculation: 3 computers, operating system + office suite
Before comparing anything, you need to separate two expenses that are often confused.
The operating system. If your machines were purchased with Windows preinstalled, the license is already included and you have nothing to pay. You only need to purchase a Windows license in two cases: a custom-built or refurbished PC delivered without an operating system, or an upgrade from the Home edition to Professional to access features absent from Home (full BitLocker management, Remote Desktop host access, domain joining, Hyper-V).
Upgrading from Windows 10 to Windows 11 costs nothing, however, and this is a common misconception. On a machine whose Windows 10 license is activated and that meets the hardware requirements (TPM 2.0, Secure Boot, supported processor), the upgrade can be performed without purchasing a new key. Hardware compatibility alone determines access to Windows 11, not a new license.
A clarification about BitLocker, which is often cited inaccurately: since Windows 11 24H2, the Home edition also encrypts the disk using BitLocker technology on eligible machines, upon first sign-in with a Microsoft account. What remains exclusive to the Professional edition is full encryption management (policies, BitLocker To Go, and manual volume control).
The office suite. Here, nothing is ever included. A new PC may display Word and Excel icons: these are most often one-month Microsoft 365 trials that then require a subscription. Word, Excel, PowerPoint, and Outlook are always paid for separately.
The honest calculation for three computers is therefore: (operating system license if needed × 3) + (office suite license × 3). And above all, there is a question we often forget to ask: over how many years? A subscription costing €100 per year and a one-time purchase costing €100 cost the same during the first year. Not the fifth.
The Microsoft 365 subscription and its cumulative cost
This is the route Microsoft promotes. As of August 20, 2026, the French Microsoft Store lists Microsoft 365 Personal at €99 per year (or €10 per month) and Microsoft 365 Family at €129 per year (or €13 per month). These are consumer prices, shown inclusive of all taxes, so they can be compared directly with a tax-inclusive price. They have changed several times in recent years, so check them as of the date you read this.
The first useful point: monthly payment is not neutral. €10 per month amounts to €120 over a year versus €99 annually, and €13 per month amounts to €156 versus €129. About 20% more for exactly the same thing.
For three computers, the Family plan is the right choice: it covers up to six people, each of whom can install the applications on multiple devices and gets their own OneDrive storage. A single Family plan is therefore more than enough for three computers.
The factor that changes everything is the cumulative cost. At €129 per year:
- 3 years of use: €387
- 5 years of use: €645
- 8 years of use: €1,032
And these amounts assume that the price does not change, which has not been the case in recent years. When you stop paying, access does not end overnight: for most offers, the subscription remains fully functional during a grace period of about thirty days, after which the applications switch to reduced-functionality mode (you can view your files, but no longer edit them). The conclusion remains the same: you own nothing; you rent it.
Two limitations are worth knowing. First, Windows is never included in Microsoft 365 Personal or Family. Many people believe it is. If your machines need an operating system license, you still have to purchase it separately. Second, these two plans are intended for personal and family use. For professional activity, Microsoft directs users to the Business plans, billed per user per month before tax: the calculation becomes price × 3 users × 12 months, every year, and VAT must be added before comparing it with a tax-inclusive price. Check the up-to-date Microsoft 365 Business pricing, which has also been increased.
In return, the subscription offers real benefits: 1 TB of OneDrive storage per person, continuous feature updates, and no support end date as long as you keep paying.
Three perpetual licenses purchased individually
Second option: buy perpetual-license versions, one per machine. You pay once and keep the software.
The calculation trap lies in the scope of each license. On the Microsoft Store, Office Home 2024 is explicitly a one-time purchase for 1 PC or 1 Mac. One license, one machine. The same applies to a Windows license purchased at retail. For three computers, you therefore multiply everything by three:
- 3 × the listed price of the office suite
- + 3 × the listed price of the Windows license, if your machines need one
The rule we follow throughout this article is simple: we cite only prices that we were able to verify ourselves on the day of writing, and we date them. The retail prices of Windows and Office licenses sold individually could not be verified that day, so we are not quoting any. Check them on the Microsoft Store and do the multiplication; it is the clearest exercise. Above all, remember the mechanism: when purchased individually, the price per device never decreases. The third PC costs exactly the same as the first.
The real advantage, however, is significant: no annual expiration, no renewal, and no payment to monitor once the purchase is complete.
Volume licensing is out of reach for 3 devices
This is the question small organizations often ask: “There are three of us; can we use volume licensing like businesses do?” In practice, no—and it is better to know that before wasting time.
The Open License program, which was historically the entry point for small organizations, has not accepted any new purchases or renewals since January 1, 2022, including from customers who were already using it. Open Value is intended for organizations with around five or more devices and comes with Software Assurance, which increases the cost. The Enterprise Agreement program, meanwhile, assumes a fleet of several hundred devices.
The CSP channel remains, accessible from a single user, but it necessarily involves a Microsoft-authorized intermediary: you cannot buy it directly, pricing is negotiated, and most of the catalog is offered as a subscription. For three devices, the administrative effort far outweighs any potential savings.
Practical conclusion: with three devices, volume licensing is not an option. You choose between a subscription and a perpetual license.
A license intended for 3 devices, and its cost per device
There is one final option, less well known: a license whose stated scope covers three devices from the outset. That is what we sell, at €29.99 including VAT for 3 devices, or less than €10 per device.
This price applies to both the operating system and office software: Windows 11 Professional for 3 PCs and Office 2024 Professional Plus for 3 PCs are each priced at €29.99 including VAT. And if all three of your machines need both, let's be frank: the Windows 11 Pro + Office 2024 Pro Plus bundle for 3 PCs is listed at the same price as either product purchased separately. Buying both licenses one after the other would mean paying twice what the bundle charges once: in this situation, choose the bundle.
In practical terms: the key is sent by email within a few minutes, the invoice includes VAT, and there is no subscription or annual renewal. Another consequence of this one-time price: between two release years, the choice is not a financial one. At €29.99 on both sides, the support duration is what decides (we'll get to that).
Be careful if you are equipping Macs: our Mac products are sold for a single Mac at a significantly higher price, and Office 2021 for Mac loses support on October 13, 2026. Always check the scope and release year shown on the product page before ordering.
Summary table
| Option | What you pay for 3 computers | Type | Windows included? |
|---|---|---|---|
| Microsoft 365 Family | €129 per year, or €387 over 3 years and €645 over 5 years | Subscription: ends when you stop paying | No |
| Microsoft 365 Business | Pre-tax price per user × 3 × 12 months, every year, + VAT | Subscription, for professional use | No |
| Individual perpetual licenses | 3 × the retail price of the office suite (+ 3 × Windows if necessary) | One-time purchase, one license per computer | No, must be added |
| Volume license | Not applicable for 3 computers | For larger fleets only | Not applicable |
| 3-computer license from 123 Licence | €29.99 including VAT, or less than €10 per computer | One-time purchase, with no subscription or renewal | Yes with the bundle, no with a standalone office suite license |
The Microsoft prices cited here were checked on the French Microsoft Store on August 20, 2026. They change, so check them before making your decision.
What the price alone doesn't tell you
Three factors matter at least as much as the price.
End of support date. This is the most overlooked—and most concrete—criterion. Microsoft ended support for Office 2016 and Office 2019 on October 14, 2025: these versions still work, but no longer receive security updates, and no paid extended support program was planned for them. More importantly today: support for Office 2021 ends on October 13, 2026, across all editions, on both Windows and Mac. Office 2024 is supported until October 9, 2029, according to the lifecycle information published by Microsoft and reviewed on August 20, 2026. If you are buying now for several years, the three-year difference weighs heavily in the decision. Older versions remain useful when you have a specific compatibility need with an existing computer or business application, not as the default choice. Microsoft may adjust these dates: check the published lifecycle before deciding.
The case of Windows 10. Support for Windows 10 ended on October 14, 2025. Microsoft offers an Extended Security Updates (ESU) program through October 12, 2027, free in the European Economic Area for individuals who remain signed in with a Microsoft account. This is a reprieve, not a lasting solution: if your machines are compatible, upgrading to Windows 11 remains the logical path, and upgrading from an activated Windows 10 license is free. A Windows 10 Professional for 3 PCs license is justified only for machines without an operating system or hardware that does not meet the requirements for Windows 11.
What the subscription really provides. If the 3 TB of OneDrive storage (1 TB per person) replaces a storage service you already pay for, the cost difference narrows. If you do not need it, you are paying every year for features you do not use.
Which option for which profile
Three family computers, used for standard word processing and spreadsheets. The perpetual 3-device license is by far the most economical, and the gap widens every year. An Office 2024 Professional Plus license meets the need with no payment deadline to monitor; the only remaining deadline is the end of support in 2029.
A family living in the cloud, with several phones and a genuine need for shared storage. Microsoft 365 Family makes sense: one terabyte per person and continuous synchronization justify the subscription. Do the math over five years before signing up.
A small three-person business. The question becomes: do you need hosted email and professional mailboxes? If so, a Business plan is essential, despite the recurring cost. If your email is already set up elsewhere and you only need the applications, a perpetual Office 2024 license does the job at a fraction of the long-term cost, with an invoice including VAT that can be recorded as a business expense.
Three assembled or refurbished PCs, without an operating system. This is where the bundle makes the most sense: the operating system and office software in a single order, with three operational machines.
A server requirement. None of the above applies: Windows Server licenses follow a completely different licensing model and price range.
In short, with three devices, the real trade-off is not “which brand” but “rental or ownership, and over how many years.” Start with the time frame; the rest of the calculation follows automatically.