The short answer to Microsoft 365 Business Standard vs Premium is that both plans give your staff exactly the same Office apps and email, with Teams and 1 TB of storage each. The difference is security and control: Premium adds Conditional Access, device management through Intune, Defender for Business on laptops and stronger email and data protection. If your staff work away from the office, use their own phones for work email or handle sensitive client data, Premium is usually the right plan; if not, Standard with sensible settings can be enough.
Quick answer: Choose Microsoft 365 Business Premium if you need to control which devices can reach company data, protect laptops with endpoint detection, block sign-ins from risky locations or meet an insurer’s security conditions. Business Standard suits small, office-based teams on company PCs who only need the apps and email. Both plans cap out at 300 users, and you can mix them in one tenant.
In this guide: what Premium actually adds, the real price gap at the time of writing, when Standard is genuinely enough, the signs you have outgrown it, how to mix the two plans legally, and why Premium protects nothing until someone configures it.
What Business Premium adds over Standard
Start with what does not change. Both plans include the desktop versions of Word, Excel, PowerPoint and Outlook on up to five PCs or Macs per user, a 100 GB mailbox and 1 TB of OneDrive storage, along with SharePoint and Teams. A member of staff opening Excel cannot tell which plan they are on. That is why so many comparison pages reduce the decision to a feature grid and leave the reader none the wiser.
The difference sits underneath, in the tools an administrator uses to decide who can sign in, from which device, and what happens when something goes wrong. Microsoft’s own comparison lists these as the Premium-only components:
| Capability | Business Standard | Business Premium |
|---|---|---|
| Identity (Microsoft Entra ID) | Free tier: security defaults and basic MFA | Entra ID P1: Conditional Access, risk-based sign-in rules |
| Device management | None beyond basic mobility settings | Intune Plan 1: enrol devices, enforce encryption, wipe remotely |
| Laptop and desktop protection | Windows’ built-in antivirus only | Defender for Business: endpoint detection and response |
| Email threat protection | Spam and malware filtering, plus URL time-of-click checks | Defender for Office 365 Plan 1: Safe Attachments, Safe Links, impersonation protection |
| Sensitive data | Not included | Purview Information Protection labels and data loss prevention |
| Email archive | 50 GB archive per user | Up to 1.5 TB archive per user |
| Shared or remote desktop PCs | Not supported for the desktop apps | Shared computer activation supported |
Two of those rows are worth a closer look because they catch people out. The URL time-of-click protection on Standard is new: Microsoft added it to Business Basic and Standard in its July 2026 packaging and pricing update, which narrows the email gap a little. It does not bring Safe Attachments or impersonation protection with it, and those are the controls that stop a convincing fake invoice from a supplier’s lookalike domain.
The archive row is the other trap. A larger archive is useful for long-serving staff with enormous mailboxes, but it is storage, not a copy you can restore from. Neither plan includes a third-party backup, which we cover in does Microsoft 365 back up your data.
How much more does Business Premium cost?
At the time of writing, Microsoft’s UK site lists Business Standard at £10.80 per user per month and Business Premium at £16.90, both on an annual commitment and both excluding VAT. On a monthly commitment the prices rise to £12.96 and £20.28. Resellers and IT providers may quote differently, and Microsoft changes these figures, so check before you budget.
The gap is £6.10 per user per month, or £73.20 per user per year. For a 15-person firm that is £1,098 a year before VAT. It used to be wider. When Microsoft’s price changes took effect on 1 July 2026, its published list raised Business Standard and left Business Premium where it was, so the case for staying on Standard to save money is weaker than it was a year ago.
The useful comparison is not Standard against Premium, though. It is Premium against Standard plus the add-ons you would otherwise buy to close the gap. Microsoft sells the main Premium components separately, and at UK list prices at the time of writing:
| Route | Per user per month (ex VAT) |
|---|---|
| Business Premium | £16.90 |
| Business Standard on its own | £10.80 |
| Standard + Entra ID P1 (£5.40) + Defender for Business (£2.30) | £18.50, still without Intune |
Once you need more than one of the security components, buying them piecemeal costs more than the bundle. Bolting on a single add-on to Standard only makes sense when there is exactly one gap to fill, such as Defender for Business on its own for a firm that already manages its devices some other way.
When Business Standard is enough
Standard is not an insecure plan. Every Microsoft 365 tenant can switch on security defaults, which require multi-factor authentication for everyone and block the legacy sign-in methods most password-spraying attacks rely on. If you have not done that yet, our guide to setting up MFA in Microsoft 365 walks through it, and it costs nothing on any plan.
Standard with security defaults switched on is a reasonable fit when most of these are true:
- everyone works from company-owned PCs, mostly in one office
- nobody reads work email on a personal phone, or you accept the risk if they do
- you hold little personal or financial data about clients
- a separate, managed antivirus product already runs on every computer
- no insurer, client contract or regulator is asking you to prove device control
A five-person design studio with three desktop PCs and a shared printer can live happily on Standard. A five-person accountancy practice holding payroll data for two hundred clients probably cannot, even though the headcount is identical. Size is a poor guide; what you hold and where people work from are better ones.
Signs your business needs Business Premium
These are the situations where we see Standard run out of road. Any one of them is a reason to price Premium properly; two or more usually settles it.
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Staff read company email on personal phonesWithout Intune you cannot require a PIN, keep company data inside managed apps or remove it when someone leaves. You are trusting every personal phone to be locked and patched.Check: ask how many staff have Outlook or Teams on a phone the business does not own.
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People work from home or on the moveConditional Access lets you allow sign-ins only from compliant company devices, or demand extra checks from unfamiliar countries. Security defaults cannot make those distinctions.Check: look at the sign-in logs in the Entra admin centre for logins from places your staff never go.
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Laptops leave the buildingA lost laptop with no enforced encryption and no remote wipe is a reportable incident waiting to happen. Intune turns on BitLocker and can wipe the device; Defender for Business spots suspicious behaviour on it.Check: can you confirm, today, that every laptop is encrypted?
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Your insurer or a client asks security questionsCyber insurance proposal forms and supplier questionnaires increasingly ask whether you enforce MFA, manage devices and run endpoint detection. Premium is the cheapest way to answer yes to all three inside Microsoft 365.Check: read last year’s renewal form for questions you answered “partially”.
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You are working towards Cyber EssentialsThe scheme expects secure configuration, malware protection and control over which devices reach company data. Intune makes those controls easier to apply and to evidence across every machine.Check: list every device that can open company email or files, including phones.
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Staff share PCs or use a remote desktop serverMicrosoft states that Business Premium is the only business plan that supports shared computer activation. On Standard, the desktop apps are not licensed for that set-up at all.Check: do shift workers or a terminal server share one Windows login point?
If Cyber Essentials is on your list, our explainer on what Cyber Essentials is and who needs it covers the five controls and how certification works.
Can you mix Standard and Premium licences?
Yes. Microsoft allows Business plans to sit alongside Enterprise and standalone plans in one tenant, and it is common to put office staff on Standard while directors, finance and anyone who works remotely get Premium. Microsoft’s plan options service description confirms the mixing rule and the limit that goes with it: the Business family as a whole is capped at 300 licences, so 250 Premium seats leave room for only 50 more Business seats of any kind.
The catch is in how the security tools work. A Conditional Access policy or an Intune compliance rule is only properly licensed for users who hold a plan that includes it. If you write a rule that says “only compliant devices can open email” and apply it to everyone, the Standard users are benefiting from a feature they are not licensed for, and they are often the ones you most wanted it for.
In practice, mixing works best when the split follows risk rather than seniority:
- List who holds what. Anyone with access to client personal data, payroll, banking or the company’s admin accounts goes on Premium.
- List who works where. Anyone who signs in from home, on the road or on a personal phone goes on Premium.
- Leave the rest on Standard, with security defaults or a basic MFA policy covering them.
- Review it at every starter and leaver, because roles drift and the licence rarely follows.
If the Premium list ends up covering most of the business, move everyone across. Two sets of rules for one small team are harder to maintain than the money saved.
Premium does nothing until it is set up
This is the part most comparison pages leave out. Buying Business Premium changes almost nothing on the day the licences are assigned. Intune does not enrol a single device by itself, Conditional Access has no policies until someone writes them, and Defender for Business needs devices onboarded before it can see them. We regularly find tenants that have paid for Premium for years with none of it switched on.
Scope note: a sensible Premium baseline for a small business usually means MFA for every account, blocking legacy authentication, requiring a compliant device for email and files, enforcing BitLocker, onboarding every Windows laptop to Defender for Business, and turning on Safe Attachments and Safe Links. The order matters, because a careless Conditional Access policy can lock the whole company out, administrator included.
So budget for the configuration as well as the licence. If you are moving from another email platform at the same time, plan the security baseline as part of the move; our guide to migrating to Microsoft 365 sets out where it fits. If you would rather someone else handled it, device and identity controls are part of our cyber security services.
Frequently asked questions
Can I upgrade from Business Standard to Business Premium later?
Yes. Microsoft lets you move between plans in the same family, and the upgrade keeps every mailbox and OneDrive in place because the apps and data are identical. Users notice nothing. The work is in what follows: enrolling devices in Intune, writing Conditional Access policies and onboarding laptops to Defender for Business, which should be planned rather than switched on in one go.
Is Business Premium enough on its own, or do I still need antivirus?
For most small businesses, Premium replaces a separate antivirus product on Windows and Mac devices, because Defender for Business includes next-generation protection plus endpoint detection and response. It does not replace backup, staff training or patching. Running two antivirus products side by side usually causes more trouble than protection, so remove the old one once Defender is confirmed active.
What about Microsoft 365 E3 instead of Business Premium?
Under 300 users, Business Premium is usually the better value. It includes most of the security a small business uses from E3, at a lower price per user. E3 makes sense once you pass 300 users, or when you need specific enterprise features such as Windows Enterprise licensing or the larger Exchange Online Plan 2 mailboxes. Some larger firms mix the two.
Does Business Premium include Copilot?
Not the full Microsoft 365 Copilot assistant inside the Office apps. At the time of writing, every business plan includes Copilot Chat, and Microsoft sells Copilot either as an add-on or as a “with Copilot” version of Standard and Premium at a higher price. The choice between Standard and Premium is a security decision; Copilot is a separate one.
For most businesses the decision comes down to two questions: where do your people work from, and what would it cost you if a device or account were compromised? If the honest answers are “everywhere” and “a lot”, Premium pays for itself the first time it blocks a sign-in from a stolen password. If your team sits in one office on company PCs, Standard with security defaults switched on is a defensible choice, as long as you revisit it when that changes.
Not Sure Which Plan Fits Your Team?
We review your current Microsoft 365 licences, recommend the right mix of Standard and Premium, and set up the security controls so you get what you are paying for.
