A plain-English Microsoft 365 small business guide: what you get, which plan to pick, real costs, where files should live, and how to set it up securely.
Microsoft 365 gives a small business professional email, the Office apps, cloud storage and Teams in one monthly subscription, usually Business Standard or Business Premium at roughly $18 to $33 per user a month. Set up properly, with security switched on and files in the right place, it replaces a filing cabinet, a scattered set of apps and a lot of manual admin.
If you run a small business in Western Sydney, there's a fair chance you already pay for Microsoft 365 and use about a third of it. Email works, so nobody touches the rest. That is money left on the table, and often a security gap sitting wide open.
This guide covers what Microsoft 365 actually includes, which plan suits a small team, what it costs, where your files should live, and how to get it running so it works for you instead of against you. It is written for the owner, not the IT department, because most small businesses do not have one.
What is Microsoft 365, and what do you actually get?
Microsoft 365 is a monthly subscription that bundles business email, the Office apps and cloud storage together. Instead of buying Office once and running your own mail server, you pay per user each month and Microsoft hosts the lot.
A typical Business plan includes:
- Email and calendar through Outlook, on your own domain (you@yourbusiness.com.au).
- The Office apps - Word, Excel, PowerPoint and Outlook, installed on your computers and phones.
- 1TB of cloud storage per person in OneDrive.
- SharePoint and Teams for shared files, chat and meetings.
- Built-in security - spam filtering, multi-factor authentication and, on the top plan, device and data protection.
The point is that it is one system with one login, not five tools stitched together. Microsoft publishes the full plan detail on learn.microsoft.com if you want the technical breakdown.
Note: The real advantage is one login across email, files and meetings, and the saving comes from dropping the separate tools it quietly replaces.
Which Microsoft 365 plan does a small business need?
Most small businesses need Business Standard, and any business holding client data should be on Business Premium. Business Basic suits only the tightest budgets that can live in a browser.
| Plan | Best for | Approx price (per user/month) | Key inclusions |
|---|---|---|---|
| Business Basic | Web and mobile only, tight budget | ~$8 | Email, Teams, web Office, 1TB OneDrive |
| Business Standard | Most small businesses | ~$18 | Everything in Basic plus the installed desktop Office apps |
| Business Premium | Client data, compliance, real security | ~$33 | Everything in Standard plus advanced security and device management |
The honest rule: if your team works from real computers, skip Basic. If you hold client financial, legal or health records, Premium's security is not a luxury, it is the reason you will sleep at night. We break the decision down further in which Microsoft 365 plan a small business needs.
How much does Microsoft 365 cost?
For a team of five on Business Standard, expect roughly $90 a month, or around $1,080 a year, before setup. Premium for the same team is closer to $165 a month. Prices are per user, billed monthly or annually, and Microsoft adjusts them from time to time.
The subscription is rarely the expensive part. The cost that catches owners out is setup and migration - moving old email across, configuring security, and getting files into the right place. Done once, properly, it pays for itself in time saved and problems avoided. Done badly, you pay again in lost email and frustrated staff.
Warning: Judging Microsoft 365 on the licence price alone hides the real variable, which is whether the setup and migration are done carefully or rushed.
Where should your files live: OneDrive, SharePoint or Teams?
Personal work goes in OneDrive; shared business files go in SharePoint; Teams is the front door you open those shared files through. Getting this right is the difference between a tidy business and a shared drive nobody can find anything in.
The short version: OneDrive is your own desk, SharePoint is the filing room the whole business shares, and Teams is the doorway with the chat attached. We map the whole thing out in OneDrive vs SharePoint vs Teams, and explain the shared-file engine in what is SharePoint and do I need it.
Is Microsoft 365 secure enough on its own?
Out of the box, no. Microsoft 365 has excellent security tools, but most are switched off or unconfigured by default, and the single biggest one, multi-factor authentication, has to be turned on and enforced.
The three things every small business should do on day one: enforce multi-factor authentication on every account, restrict who has admin rights, and set up a basic backup. We cover the first in what is MFA and why your business needs it, and the wider picture in the cyber security essentials guide. If security is the part keeping you up, our cyber security service handles it for you.
Best practice: On setup day, enforce multi-factor authentication, limit who holds admin rights, and confirm a backup is running before anyone stores real work in the system.
How do you move your email across without downtime?
You move email to Microsoft 365 without downtime by copying everything across in the background first, then flipping the switch that redirects mail only once the copy is verified. Nobody should lose a message or miss a day.
The mistake that causes downtime is changing your domain settings before the mailboxes have finished copying. Plan it in the right order and the changeover is invisible to your clients. We walk through the full sequence in how to move email to Microsoft 365 without downtime. If you would rather not touch it yourself, our Microsoft 365 service runs the migration for you, and we work on-site across the region, including Microsoft 365 support in Parramatta.
Should you use Microsoft 365 or Google Workspace?
Microsoft 365 usually wins for professional services and any business that lives in Word and Excel; Google Workspace suits teams that were built browser-first and collaborate in real time all day. Neither is wrong, but switching later is painful, so it is worth choosing deliberately. We compare them properly in Microsoft 365 vs Google Workspace for small business, and we support both, including Google Workspace.
Key takeaways
- Microsoft 365 bundles business email, Office apps, storage and Teams into one per-user subscription.
- Most small businesses want Business Standard; anyone holding client data wants Business Premium.
- Budget for setup and migration, not just the monthly licence - that is where the real value or the real mess is created.
- Security is not automatic. Turn on multi-factor authentication, limit admins and back up your data.
- Decide files-vs-storage and Microsoft-vs-Google deliberately, because switching later costs more than getting it right now.
Frequently asked questions
Is Microsoft 365 the same as Office 365?
Yes, for a small business they are effectively the same thing. Microsoft renamed the Office 365 Business plans to Microsoft 365 in 2020; the apps and email are the same, the name changed.
Do I need to be online to use Microsoft 365?
No, the desktop apps on Business Standard and Premium work offline and sync when you reconnect. You only need the internet to send email, use the web versions, or save changes to the cloud.
Can I keep my current email address?
Yes. Microsoft 365 runs on your own domain, so an address like you@yourbusiness.com.au moves across unchanged during migration. Your clients never see a difference.
Is Microsoft 365 secure enough for a professional services firm?
It can be, on Business Premium with the security features actually turned on. The tools meet a high standard, but they need to be configured and multi-factor authentication enforced, which does not happen automatically.
How long does it take to set up Microsoft 365?
A basic setup for a small team takes a day or two; a full migration from an old email system usually runs over a week to copy data safely and switch over without downtime.
Want a second opinion on how your Microsoft 365 is set up? Take the free business health check and we will tell you what is switched off that should not be.