Microsoft 365 plans for small businesses, compared

This comparison is for a business owner trying to choose Microsoft 365 without getting lost in licence names. It focuses on what changes for your team in daily life: how they use Office, how much email they can hold, and the security and device controls that become important as you grow.

Start with how people actually work

Microsoft 365 Business plans are generally sold per user, per month or year. The right licence is not necessarily the most expensive one. Start with the work each person does. A field worker who only needs email and Teams on a phone has different needs from a finance manager using large Excel files, or a director storing sensitive information on a laptop.

The commonly considered small-business range includes Business Basic, Business Standard and Business Premium. Microsoft also offers other plans and add-ons, so names and features can change. Treat any price you see online as a current quote rather than a permanent fact, and check the latest rates or ask for help before committing to an annual term.

All three main business tiers can give a user a business email address, a sizeable Exchange Online mailbox, cloud file storage through OneDrive, and access to Teams and the web versions of Microsoft apps. The real choice is whether web apps are enough, and whether your business needs the stronger protection and device management in Premium.

Business Basic: web and mobile first

Business Basic suits people who mainly use email, Teams, a browser and a phone. They can open, edit and share Word, Excel and PowerPoint files in web or mobile apps, and use Outlook on the web. It is often a sensible fit for a small team that does not need the installed desktop versions of Office on a Windows PC or Mac.

For many businesses, the mailbox allowance is not the dividing line between Basic and Standard. The practical issue is the app experience. Browser-based Office has improved greatly, but some advanced Excel features, offline work and familiar desktop workflows need the installed applications.

Basic can also be useful for a part-time employee or a shared role, provided each actual person has their own account. Avoid shared mailboxes with shared passwords. They make it much harder to trace activity, remove access cleanly and apply MFA consistently.

If you are planning a move, our Microsoft 365 migration guide explains the operational work behind email, files and user accounts.

Business Standard: the desktop apps most offices expect

Business Standard adds the installed desktop versions of the familiar Office applications for each licensed user, alongside the web and mobile versions. For most office-based small businesses, this is the practical step up. Staff can work offline, use fuller Excel and Outlook features, and continue with the desktop software they already know.

That does not mean it is automatically the best plan for every person. Paying for desktop apps someone never uses is wasteful. It is perfectly normal to mix licences where the terms allow it: perhaps Standard for people who create documents all day, and Basic for staff who mainly use email and Teams.

Business Premium: the security and device-management tier

Business Premium includes the desktop apps found in Standard, then adds the features that make a major difference to a business managing real devices and business data. This is usually the tier worth examining for directors, finance staff, people with customer data, and anyone using a company laptop outside the office.

Its additional security can support stronger identity controls, such as conditional access policies that take account of the user, device and sign-in risk. In plain terms, you can be more deliberate about who is allowed in and under what conditions. MFA is still essential; our MFA explainer explains why a password alone is not enough, and passkeys are the method Microsoft is now moving everyone towards.

Premium also includes Intune device management. That lets an authorised administrator set basic security requirements, enrol company devices, deploy settings and remove company data from a lost or departing employee's managed device. It is not magic remote control, and it needs setting up properly, but it is far more useful than a spreadsheet of laptops and crossed fingers.

The plan also has endpoint security capabilities for supported devices. This should be part of a wider approach rather than the only protection you buy. Our EDR versus antivirus comparison explains why detecting and responding to suspicious behaviour matters.

Mailboxes, storage and the details people miss

The common business tiers generally provide a 50 GB Exchange Online mailbox per user, which is ample for many small firms when mail is managed sensibly. More storage is not always better if staff are using inboxes as a filing system. Shared business documents usually belong in SharePoint or Teams, while personal working files belong in OneDrive with the right permissions.

Choosing a plan without overbuying

A small office can often start with Basic for web-first staff, Standard for desktop Office users, and Premium where device management and stronger security are justified. The choice is not a badge of how serious your business is. It is a practical decision about risk, devices and the support burden you want to carry.

Ask your IT provider to explain what they will configure, not merely which licence they will sell. A Premium licence left with default settings will not give the expected protection. Equally, a very small business with no company devices may be paying for controls it is not ready to use. Our Microsoft 365 support service can help check that the licences, setup and day-to-day support match.

Pricing changes and depends on billing term, tax treatment, add-ons and the mix of users. Check current Microsoft rates or ask for a written quote that separates licences from setup and support. That makes comparisons much fairer.

What to do next

Write down who needs desktop apps, who uses a company device, and which roles handle sensitive information. Then compare the current plan terms against that list rather than choosing on price alone. TSS offers a free, no-obligation chat to help small businesses make sense of the options without pretending every user needs the same licence.