Microsoft 365 comes in a confusing array of license tiers — Business Basic, Business Standard, Business Premium, Apps for Business, and several others, all with overlapping features and varying prices. For a small firm that just wants email and documents to work, picking the right tier is genuinely nontrivial.
Here's a practical way to think through it.
The main tiers for small businesses
Microsoft 365 Business Basic gives you web-only Office apps (no desktop installs), Exchange email, Teams, SharePoint, and OneDrive. It's the lowest cost option and works fine for users who primarily work in a browser or who don't need full desktop applications.
Microsoft 365 Business Standard adds desktop Office installs (Word, Excel, PowerPoint, Outlook, and others) and a few additional apps. This is the right tier for most users who do any meaningful document work.
Microsoft 365 Business Premium adds advanced security features — Microsoft Defender for Business, Intune for device management, Azure AD Premium, and others. For firms with any security compliance obligations, or simply for firms that want enterprise-grade security controls, Premium is worth the additional cost.
The most common mistakes
Putting everyone on the cheapest tier available. Basic works for some roles but causes friction for anyone who does substantial document work. The workaround of having people constantly use web apps instead of desktop applications is a real productivity drag.
Putting everyone on Premium when they don't need it. Premium's security features are genuinely valuable, but they require configuration to deliver their value. Paying for Premium and not configuring Intune, Defender, or Conditional Access is paying for features you're not using.
Mixing tiers inconsistently. Having some users on Business Standard and others on Business Premium can create inconsistencies in the security baseline — the Premium features that protect your environment only work as well as they're applied across your team.
Not revisiting licenses as the team changes. License needs change when you hire, when roles change, and when the business grows. A license audit once a year is a minimal but useful exercise.
What actually drives the decision
The right tier for most small professional services firms is either Business Standard (for teams with modest security requirements) or Business Premium (for teams with compliance obligations, remote workers, or a higher security risk profile). The cost difference between the two — currently around $12/user/month — is worth it in most cases if any of those conditions apply.
If you're not sure what tier you're on or whether it's the right fit, your IT provider should be able to pull your current license inventory and review it against your actual usage.