"Copilot" is one word Microsoft has stretched across at least three very different products, and the price gap between them is enormous. If you just want the cheapest way to get a capable AI assistant in front of your people, the honest answer is that you may not need to pay anything at all. The trick is knowing which Copilot does what, and where the free line sits before you start spending.
This guide walks through the three tiers an Australian business actually chooses between today, in AUD, and gives you a simple rule for when each one is worth it. All prices below are indicative AUD list pricing — confirm at purchase, because Microsoft adjusts regional pricing and promotional windows regularly, and a 1 July 2026 price change is already in play for some Australian plans.
Tier 1: free Copilot Chat (AU$0)
The cheapest Copilot is the free one, and most people don't realise it's already sitting in their browser. Copilot Chat — the consumer-facing chatbot at copilot.microsoft.com and built into Windows and Edge — costs nothing. You sign in with a personal Microsoft account and you get a genuinely useful GPT-class assistant for drafting, summarising, rewriting, brainstorming and general questions.
For a lot of small teams, this covers 80% of the "I just want AI to help me write this email" demand. It won't reach into your Outlook, your SharePoint or your Teams meetings — it has no knowledge of your business data — but as a standalone thinking-and-writing tool it's free and surprisingly capable. If your goal is simply "get Copilot," you can stop here at AU$0.
Tier 2: Copilot Pro (~AU$33 per user/month)
Copilot Pro is the individual paid upgrade, indicatively around AU$33 per user per month (indicative AUD list — confirm at purchase). It's aimed at individuals and very small teams, and it buys you two main things over the free tier: priority access to the latest, fastest models even at peak times, and Copilot embedded inside the desktop Word, Excel, PowerPoint, Outlook and OneNote apps — but only when you have a personal or Microsoft 365 Personal/Family subscription underneath it.
That "underneath it" caveat matters. Copilot Pro layers onto a consumer Microsoft 365 subscription, not a business one. For a sole trader, a contractor, or someone who lives in Word and Excel all day, ~AU$33/month is a reasonable price to get AI inside the apps without committing to the business stack.
Where it gets confusing is that Copilot Pro does not connect to your organisation's business data, and it isn't covered by the enterprise data-protection commitments that business buyers usually care about. So it's cheap and it's in-app, but it's a personal-productivity tool — not a business deployment.
Tier 3: Microsoft 365 Copilot (~AU$45.90 per user/month)
This is the one most people mean when they say "we're rolling out Copilot." Microsoft 365 Copilot is the business and enterprise product, indicatively around AU$45.90 per user per month (indicative AUD list — confirm at purchase, and note 2026 regional price movements). It requires a qualifying Microsoft 365 Business or enterprise plan as a prerequisite — you cannot buy it as a standalone.
The reason it costs roughly 40% more than Copilot Pro is that it does something fundamentally different: it's grounded in your tenant. Through what Microsoft calls the Graph, it reads (within each user's existing permissions) your emails, documents, chats, calendars and SharePoint content. That's what lets it summarise a Teams meeting you missed, draft a reply using the actual thread, build a deck from a Word doc, or answer "what did we agree with that supplier?" from your real files.
It also carries the enterprise data-protection posture — your prompts and tenant data aren't used to train the underlying models, and access respects your existing permissions. For most Australian organisations, that grounding and that data boundary are the whole point. If you don't need them, you're overpaying; if you do, nothing cheaper replicates it.
The AUD decision table
Here's the short version of who should pick what. Match yourself to the first row that fits:
- Free Copilot Chat — AU$0/user/mo: You want AI for writing, summarising and general questions, and you're fine that it can't see your business data. Best for: individuals, testing demand, light users.
- Copilot Pro — ~AU$33/user/mo (indicative AUD list, confirm at purchase): You're a sole trader or tiny team on consumer Microsoft 365 and you want AI inside desktop Word/Excel/PowerPoint/Outlook. No connection to org data or business data-protection.
- Microsoft 365 Copilot — ~AU$45.90/user/mo (indicative AUD list, confirm at purchase): You're a business that needs Copilot grounded in your own emails, files, Teams and calendars, with enterprise data protection and permission-aware access. Requires a qualifying M365 Business/enterprise plan.
- Mixed approach — varies: Most realistic for SMBs — free Chat for the whole organisation, paid M365 Copilot seats for the handful of heavy users where the time saved clearly beats ~AU$45.90/month.
Watch the 2026 pricing and promo windows
Two things move the numbers right now. First, Microsoft has signalled price changes affecting some Australian Microsoft 365 plans from 1 July 2026, so the underlying licence your Copilot sits on may shift. Second, partner-led promotional pricing on business Copilot has circulated with end dates around mid-2026 — sometimes landing below the ~AU$45.90 list on an annual commitment. These come and go, so the list price is your safe planning number and the promo is a bonus if it's live when you buy.
All of the above is ex GST. Whether GST is a real cost depends on your input-credit position; for most registered businesses it washes out, but factor it in for budgeting if it doesn't for you.
What we'd actually do
If a client asked us for the cheapest path, we wouldn't start with a purchase order. We'd switch on free Copilot Chat across the team for a fortnight and watch who genuinely uses it. AI adoption is wildly uneven — a few people lean on it daily and most try it twice. That free trial period tells you exactly where paid seats will earn out.
Then we'd buy M365 Copilot only for the proven heavy users whose time clearly clears the ~AU$45.90 bar — typically people drowning in meetings, email and document drafting. We'd skip Copilot Pro for any genuine business unless someone is locked into consumer Microsoft 365 and just wants in-app AI cheaply. And before turning on any tenant-grounded Copilot, we'd check your permissions and SharePoint sharing first — because a tool that reads your files within each user's access will surface whatever those users can already over-reach into. Cheap is good; cheap and exposed isn't.