In short: For most UK businesses, Microsoft 365 is the better choice over a standalone Office licence. The subscription model delivers continuous feature updates, cloud storage, business email, Teams, and security tools for a monthly cost that is comparable to or lower than the amortised cost of a perpetual licence over three to four years. Standalone Office (Office 2021 or Office 2024) suits a narrow set of circumstances: businesses with no internet dependency, users who genuinely need only word processing and spreadsheets, or organisations with a principled objection to subscription software. For anyone expecting to grow, integrate with CRM or ERP, or use AI tools, Microsoft 365 is the clear answer.
Feature comparison at a glance
Pricing excludes VAT and is indicative as of mid-2025. Microsoft 365 pricing shown for Business Basic and Business Standard. Standalone Office 2024 Home & Business carries a one-time cost of approximately £299.99 per device.
| Microsoft 365 (subscription) | Standalone Office 2024 | Advantage view | |
|---|---|---|---|
| Cost model | From £4.90/user/month (Business Basic) or £9.90 (Business Standard) | One-time purchase (~£299.99/device for Home & Business) | At Standard pricing, M365 breaks even with perpetual in roughly 2.5 years per user — and continues to grow in value |
| Core Office apps | Yes — Word, Excel, PowerPoint, Outlook (Standard and above) | Yes — Word, Excel, PowerPoint, Outlook | Both include full desktop apps; M365 also includes OneNote, Publisher, Access |
| Feature updates | Continuous — new features delivered regularly | Frozen at launch — security patches only | M365 users get AI features and capability improvements as they arrive; standalone users do not |
| Microsoft Copilot AI | Available as add-on (£24.70/user/month) | Not available | AI features across Word, Excel, Outlook, and Teams are only accessible on M365 |
| Business email | Included — Exchange (50 GB mailbox, custom domain) | Not included — requires separate Exchange or third-party email | Most businesses need business email — this alone often justifies M365 over standalone |
| Cloud storage | 1 TB OneDrive per user | Not included | OneDrive integration enables file access across devices and automatic backup |
| Microsoft Teams | Included across all Business plans | Not included | Teams for meetings, chat, and collaboration is not available with standalone Office |
| SharePoint | Included | Not included | Shared document management and intranet capability requires M365 |
| Device installs | Up to 5 PCs/Macs, 5 tablets, 5 phones per user | Licence covers 1 device (Home & Business) | M365 is significantly better value for users who work across multiple devices |
| Security & compliance tools | Included — Defender, Intune (Premium), Azure AD P1 | Not included | Standalone Office has no managed security layer; M365 Business Premium does |
| Offline use | Yes — full desktop apps work offline | Yes — no internet dependency | Both work offline; M365 requires periodic online check-in (approximately every 30 days) |
| Long-term support | Continuously supported and updated | Mainstream support until 2028 (Office 2024); end of life after that | Standalone Office requires repurchase or upgrade when support ends; M365 does not |
| Integration with Dynamics 365 / Power BI | Native | Not available | Any business using or planning Dynamics 365 must be on Microsoft 365 |
The hidden cost of standalone Office: Office 2024 Home & Business does not include business email, cloud storage, Teams, SharePoint, or any security management tools. For a business of 10 users that adds these separately — a third-party email host, a file sharing service, a video conferencing tool — the monthly spend typically exceeds the cost of Microsoft 365 Business Standard, which includes all of them.
Which option fits your business?
Choose Microsoft 365 if…
- You need business email on a custom domain
- Your team collaborates on documents, whether in the office or remotely
- You want Teams for meetings, chat, and file sharing
- You are considering Dynamics 365, Power BI, or Microsoft Copilot now or in future
- You need users to access files and applications across multiple devices
- Security and device management are priorities for your organisation
- You want to stay on the latest application versions without repurchasing
Consider standalone Office if…
- You have a principled requirement to avoid subscription software
- You already have business email and cloud storage from another provider
- You need Office applications on a single device with no collaboration requirement
- You are deploying for a specific, isolated use case (a dedicated terminal or kiosk)
- Internet connectivity cannot be guaranteed and the 30-day check-in is a concern
Microsoft 365 — deployed and managed by Advantage
Advantage manages Microsoft 365 deployments for UK SMEs across all sectors. Whether you are moving from standalone Office, consolidating a mix of productivity tools, or deploying Microsoft 365 for the first time, we handle licensing, configuration, data migration, and ongoing management as a single managed service.
The Advantage methodology
Whether you are moving on from standalone Office licences or deploying Microsoft 365 to a new business, we deliver it in three structured phases.
We assess your current Office installation, business email setup, storage arrangements, and growth plans before recommending the right Microsoft 365 plan and configuration.
Licence provisioning, email migration, OneDrive setup, Teams configuration, and user training — delivered to a clear timeline with minimal disruption to day-to-day operations.
Ongoing licence management, security monitoring, renewal handling, and access to our UK-based helpdesk — so your Microsoft 365 estate is always optimised.
Frequently Asked Questions — Microsoft 365 vs Standalone Office
Common questions from UK businesses deciding whether to move from a standalone Office licence to a Microsoft 365 subscription — answered honestly by Advantage, Microsoft Solutions Partner.
Is Microsoft 365 better value than buying Office outright?
For most UK businesses, yes. Office 2024 Home & Business costs around £299.99 per device as a one-time purchase. Microsoft 365 Business Standard costs £9.90 per user per month and covers up to five devices, includes business email, 1 TB OneDrive storage, Teams, SharePoint, and continuous feature updates including AI capabilities. The break-even point on raw application cost is roughly two and a half years per user — after which Microsoft 365 continues to grow in capability while standalone Office stays frozen.
When you factor in the cost of separate business email hosting, cloud storage, and a video conferencing tool — all of which most businesses need — the comparison shifts decisively in favour of Microsoft 365.
What do you lose by staying on standalone Office?
Standalone Office does not include business email, cloud storage, Teams, SharePoint, OneDrive integration, or any security management tools. Feature development stops at the version you purchased — you will not receive the AI capabilities being built into Word, Excel, and Outlook through Microsoft Copilot. When Office 2024 reaches end of support (2028), you will either need to repurchase or move to Microsoft 365 at that point anyway, having missed several years of updates and security improvements.
Does Microsoft 365 work without an internet connection?
Yes — the full desktop applications in Microsoft 365 Business Standard and Business Premium work offline. You can create, edit, and save documents without an internet connection. The only requirement is that the Microsoft 365 apps check in online approximately every 30 days to verify your active subscription. Cloud-based features such as OneDrive sync, Teams, and SharePoint require an internet connection, but the core desktop apps do not.
Will Microsoft stop supporting standalone Office versions?
Yes. Microsoft provides mainstream support for standalone Office versions for a fixed period. Office 2024 mainstream support runs until October 2028, after which security updates cease. Businesses still running older versions such as Office 2019 or 2016 are already approaching or past end of mainstream support and carrying security risk. Microsoft 365 has no equivalent end-of-life concern because it is continuously maintained as a service.
Can I get Microsoft Copilot AI with a standalone Office licence?
No. Microsoft Copilot for Microsoft 365 is only available as an add-on to active Microsoft 365 Business or Enterprise subscriptions. It is not available to users of standalone Office licences. Copilot works across Word, Excel, PowerPoint, Outlook, Teams, and other Microsoft 365 applications — generating content, summarising emails, analysing spreadsheets, and producing meeting notes. If access to Copilot AI is part of your business roadmap, a Microsoft 365 subscription is the prerequisite.
How do I migrate from standalone Office to Microsoft 365?
Moving from standalone Office to Microsoft 365 is straightforward for most businesses. Your existing Office documents are fully compatible — you open them in the same applications with no conversion required. The main steps are licensing, setting up your Microsoft 365 tenant, migrating business email to Exchange Online, and configuring OneDrive and Teams for your team.
Advantage handles this end-to-end, including email migration, user training, and initial security configuration. You can contact us online, call us on 020 3004 4600, or email hello@advantage.co.uk to discuss your current setup.
Which Microsoft 365 plan should I choose when moving from standalone Office?
For most UK SMEs moving from standalone Office, Business Standard (£9.90/user/month) or Business Premium (£19.90/user/month) are the most common starting points. Business Standard includes the full desktop apps, Teams, Exchange, SharePoint, and OneDrive. Business Premium adds enterprise-grade security — Defender for Business, Intune, and Azure AD P1 — which is the right choice for any business handling sensitive data or operating in a regulated sector.
Advantage can review your specific situation and recommend the right plan. See our Microsoft 365 Business vs Enterprise guide for a full plan breakdown.
