Microsoft 365 Business Premium vs Business Standard: Which Is Right for You?

If you are weighing the two tiers, this is the short version: Standard is a productivity suite, Premium is a productivity suite with built-in security and device management. The gap between them is not features-for-features' sake — it is the difference between hoping nothing goes wrong and being able to prove your accounts, laptops, and data are protected. For a fuller picture of how these controls fit together, see our Microsoft 365 security pillar.

What is the difference between Business Premium and Standard?

Both tiers include the desktop and web Office apps, 1TB OneDrive, Exchange email, Teams, and SharePoint. The difference is entirely security and management: Business Premium bundles enterprise-grade endpoint protection, mobile device management, and identity controls that Standard simply does not contain. You cannot configure your way around the gap — the licences are not present.

List prices are Microsoft's published UK figures, ex VAT on an annual commitment, per Microsoft 365 for business. The security capabilities are documented in Microsoft Learn.

How much more does Business Premium cost than Standard?

On Microsoft's UK list prices, Standard is £9.60 per user per month and Premium is £16.90 — a difference of £7.30. The source figure most buyers quote is slightly wider once partner and add-on pricing is included: "The additional £8–£10 per user per month includes Defender for Business, Intune, and Conditional Access — giving you a complete, integrated security baseline."

For a 25-user business, that upgrade is roughly £200–£250 per month for integrated endpoint protection, device management, and identity security. Set that against the downside: "Given the average cost of the most disruptive breach is £3,550 (DSIT 2025)", the upgrade typically pays for itself by preventing a single incident. The UK government's annual Cyber Security Breaches Survey tracks these costs year on year.

The honest framing: you are not paying £7–£10 for features, you are paying for the controls that stop an account takeover from becoming a data breach.

What security features does Premium add that Standard lacks?

Premium adds four controls that matter most for SMEs: Defender for Business for endpoint detection and response, Microsoft Intune for device management, Entra ID P1 for Conditional Access, and Defender for Office 365 for advanced email threats. Standard has none of these — it stops at basic email filtering.

• Defender for Business — EDR-grade protection that detects and isolates compromised laptops, not just known malware signatures.
• Microsoft Intune — enforces encryption, PIN policies, and remote wipe across company and BYOD devices.
• Conditional Access — blocks risky sign-ins and enforces MFA based on user, device, and location.
• Defender for Office 365 P1 — rewrites malicious links and detonates attachments before they reach the inbox.

This matters because identity is the front door. The NCSC's multi-factor authentication guidance is unambiguous that MFA is one of the most effective controls available, yet "Only 40% of UK businesses have two-factor authentication enabled (DSIT 2025)". Conditional Access in Premium is what makes enforcing it across the whole organisation a policy rather than a hope. Microsoft has reported that "99.99% of compromised accounts did not have MFA enabled" — the single cheapest control you can switch on.

Which Microsoft 365 tier should a UK SME choose?

AMVIA recommends Business Premium for any UK business handling client data, financial records, or operating in a regulated sector. Standard only makes sense for very small, low-risk teams that already run separate, well-managed endpoint and identity tooling — which, in practice, almost no SME does.

The case for Premium gets stronger as the threat surface grows. Microsoft's platform is a constant target: "1,360 Microsoft vulnerabilities patched in 2024 — up 11% YoY", across an estate of "345m Microsoft 365 paid subscribers globally in 2025". Premium is how you keep pace with that patch and threat cadence without stitching together third-party tools. If you also want someone to run it for you, our managed Microsoft 365 service operates the security baseline day to day.

Can you bolt security tools onto Standard instead of upgrading?

You can, but it rarely saves money or effort. Buying standalone EDR, device management, and identity protection as separate products almost always costs more per user than the Premium upgrade, and you lose the shared threat intelligence that comes from running everything inside one Microsoft tenant. Integration is the point.

The advantage of Premium is that endpoint, email, and identity signals feed a single console and enforce policy together. A third-party stack means more vendors, more agents on every device, and more gaps where two tools assume the other is watching. If you are comparing Microsoft's native protection against a separately managed detection service, our Defender vs MDR comparison breaks down where each fits, and our managed cybersecurity pages cover the wider security picture.