Microsoft 365 Business Basic vs Exchange Online Plan 1: Which One Should You Buy?
This is one of the most common Microsoft licensing questions for small businesses: should you buy Microsoft 365 Business Basic or just go with Exchange Online Plan 1?
The key difference is simple. Exchange Online Plan 1 is a standalone hosted email plan, while Microsoft 365 Business Basic is a broader small business suite that includes Exchange Online plus collaboration and productivity services. Microsoft’s plan options page says Business Basic includes Exchange Online Plan 1, and Microsoft’s Exchange comparison page says Exchange Online can be bought either as a standalone email service or as part of a Microsoft 365 business plan that includes SharePoint, OneDrive, Microsoft Teams, and more. Microsoft also notes that service availability across plans does not always mean the features are identical in every plan, so advanced needs should always be checked in the service descriptions.
On Microsoft’s current US pricing pages, Business Basic is listed at $6.00 user/month and Exchange Online Plan 1 is listed at $4.00 user/month, both with annual commitment. So the practical question is whether the extra $2 user/month is worth it for the additional Microsoft 365 services. For most small businesses that need collaboration, shared files, and Teams, the answer is usually yes.
Microsoft 365 Business Basic vs Exchange Online Plan 1 comparison matrix
| Feature | Microsoft 365 Business Basic | Exchange Online Plan 1 |
|---|---|---|
| US list price (annual commitment) | $6.00 user/month | $4.00 user/month |
| Exchange email included | Yes — includes Exchange Online Plan 1 | Yes — standalone plan |
| Primary mailbox size | 50 GB | 50 GB |
| Archive mailbox size | 50 GB | 50 GB |
| Custom business email | Included | Included |
| Microsoft Teams | Included | Not part of the standalone email plan |
| OneDrive | 1 TB per user | Not part of the standalone email plan |
| SharePoint | Included | Not part of the standalone email plan |
| Web and mobile Word, Excel, PowerPoint, Outlook | Included | Not part of the standalone email plan |
| Desktop Office apps | No | No |
| Designed for up to 300 users | Yes | Microsoft states this limit for Business plans, not the standalone Exchange plan |
What stays the same
From a pure email perspective, these two options overlap more than many buyers realize. Microsoft’s Exchange limits page shows 50 GB user mailboxes and 50 GB archive mailboxes for Microsoft 365 Business Basic and Standard, and the same 50 GB user mailbox and 50 GB archive mailbox for Exchange Online Plan 1. That means if you only care about Exchange mailbox storage, there is no built-in advantage either way.
That is why this comparison is really not about email capacity. It is about whether you want email only or email plus the Microsoft 365 collaboration stack.
The real difference: suite vs standalone email
Microsoft 365 Business Basic adds a lot beyond hosted email. Microsoft lists web and mobile versions of Word, Excel, PowerPoint, and Outlook, 1 TB of OneDrive storage per user, Microsoft Teams, and additional apps such as Bookings, Planner, and Forms. Microsoft also lists SharePoint as part of the Business Basic product experience.
Exchange Online Plan 1, by contrast, is built for organizations that want hosted business email without the rest of the suite. Microsoft describes Exchange Online as a standalone email service, which is exactly why it can be the better option for businesses that already have other app licensing, already use another collaboration platform, or simply want the lowest-cost Microsoft-hosted email option.
The licensing detail buyers often miss
Here is the detail that saves a lot of confusion later: neither Business Basic nor Exchange Online Plan 1 includes desktop Office apps. Microsoft says Business Basic includes the web and mobile versions of Office apps, and Microsoft’s Outlook licensing guidance says using Outlook for Windows or Outlook for Mac with a Microsoft 365 organizational email address requires a plan that includes the desktop versions of Microsoft 365 apps.
That means if your team expects the full desktop Outlook experience without already having a qualifying apps license, Business Basic is not enough, and Exchange Online Plan 1 is not enough either. In that case, Microsoft points buyers toward plans such as Business Standard, Business Premium, or Microsoft 365 Apps plans that include desktop app rights.
Which one should you choose?
Choose Microsoft 365 Business Basic if:
Business Basic is usually the better fit if your business wants email, Teams, file sharing, OneDrive, SharePoint, and lightweight Office productivity tools in one plan. Based on Microsoft’s US pricing, the jump from Exchange Online Plan 1 to Business Basic is $2 more per user per month, and that small price increase unlocks a much broader day-to-day collaboration platform.
Choose Exchange Online Plan 1 if:
Exchange Online Plan 1 is the better fit if you want hosted email only, want to keep licensing lean, or already have another solution for collaboration and file sharing. It can also make sense if your organization already licenses desktop apps separately and only needs Exchange mailboxes.
A very practical Microsoft licensing tip
Microsoft says you can combine Business, Enterprise, and standalone plans such as Exchange Online Plan 1 within a single account. That is useful for organizations where some users need the full Business Basic collaboration stack, while others only need email.
That mixed-licensing model is often the smartest real-world answer. Not every mailbox user needs the same bundle, and Microsoft’s own documentation confirms you can mix these licensing approaches in one tenant.
Final verdict
If you want the cleanest answer, it is this: Exchange Online Plan 1 is the lower-cost email-only choice, while Microsoft 365 Business Basic is the better value for most small businesses because it layers Teams, OneDrive, SharePoint, and web/mobile Office apps on top of the same Exchange foundation. The mailboxes are effectively the same size, so the real buying decision is whether you want just email or a broader collaboration suite.
FAQ
Does Microsoft 365 Business Basic include Exchange Online Plan 1?
Yes. Microsoft’s plan options page says Business Basic includes Exchange Online Plan 1.
Is Business Basic better than Exchange Online Plan 1?
For most small businesses, yes, if they need Teams, OneDrive, SharePoint, and web/mobile Office apps. If they only need email, Exchange Online Plan 1 can be the simpler and cheaper fit.
Do both plans include desktop Outlook?
No. Microsoft says Outlook desktop use requires a plan that includes desktop Microsoft 365 app rights.
Can I mix Business Basic and Exchange Online Plan 1 licenses?
Yes. Microsoft says Business, Enterprise, and standalone plans can be combined within a single account.
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