You have heard Copilot mentioned three times this month, once by your accountant, once by a supplier, once in a webinar you half watched. So you open Microsoft’s pricing page and find Copilot, Copilot Chat and Microsoft 365 Copilot listed side by side, with no plain statement of what separates them, and prices in dollars that don’t match the pounds your reseller quoted. The confusion is built into Microsoft’s naming. Three different products share one brand, and only one of them matters for the buying decision.
What is Microsoft Copilot for business?
Copilot is Microsoft’s brand name for three separate products. There is a free consumer Copilot anyone can use on the web, a Microsoft 365 Copilot Chat tier included at no extra cost with eligible business plans, and a paid Microsoft 365 Copilot licence. Only the paid licence works inside your firm’s files, mail, meetings and Teams chats.
The free Copilot is the one your team may already use at home. It runs at copilot.microsoft.com and in the mobile apps, answers from the public web, and has no connection to your company’s Microsoft 365 tenant. Copilot Chat is the work version of the same idea. It comes bundled with eligible business plans, runs under your firm’s IT controls with enterprise data protection, and can summarise files a user uploads, but it does not automatically read anyone’s mailbox or your SharePoint libraries.
That middle tier explains why someone on your team will say “we already have Copilot” the moment you raise the paid licence. They are half right. What they have is a governed web assistant. The paid licence is the third product, and the one that changes what the assistant can actually see. If the word itself is new to you, there is a plain-English primer in What is a copilot?.
What does the paid Microsoft 365 Copilot licence actually add?
Two things. Persistent grounding in your own work data through Microsoft Graph, meaning Copilot can draw on the emails, documents, meetings and chats each user already has permission to see, and Copilot built directly into Word, Excel, PowerPoint, Outlook and Teams rather than sitting in a separate browser window. That combination is what turns a general assistant into one that knows your business.
In practice it means asking Copilot in Outlook to summarise a month of correspondence with one client, asking Word to draft a proposal from three previous contracts, or getting a Teams recap with decisions and actions pulled from the transcript. Copilot only surfaces what each user already has permission to see, so your existing SharePoint and mailbox access controls carry over unchanged.
The licence also brings pre-built agents such as Researcher and Analyst, and Copilot Analytics, which shows you who is actually using their seat. For a team of five to fifty people that last part matters more than it sounds, because it turns licence allocation from a guess into a monthly review.
You can check what any user currently holds without opening the admin centre. Signing in at microsoft365.com shows a label under the user’s name. Copilot Chat (Basic) means no paid licence, while M365 Copilot (Premium) means the seat carries the full in-app experience with priority access.
What does Microsoft 365 Copilot cost in the UK?
For a firm under 300 seats, the relevant product is Microsoft 365 Copilot Business, listed at 21 dollars per user per month on an annual commitment, roughly £17 through UK resellers. Microsoft’s UK site prices the bundles at £18.10 for Business Standard with Copilot and £24.60 for Business Premium with Copilot, excluding VAT. Every seat must sit on an eligible Microsoft 365 base plan.
You cannot buy Copilot on its own. The eligible base plans are Business Basic, Business Standard and Business Premium for firms under 300 seats, plus the Microsoft 365 and Office 365 enterprise equivalents above that line.
The 18 versus 21 dollar confusion is simpler than it looks. Microsoft ran a promotional rate of 18 dollars on Copilot Business until 30 June 2026, and its pricing page still frames the standard figure as “originally starting from 21.00”. The promotion has ended, so budget on 21 dollars and treat any reseller discount as a bonus. Firms on enterprise plans, E3 or E5, pay around 30 dollars, roughly £24, for the enterprise add-on instead, with no seat ceiling.
The timing wrinkle is that several Microsoft 365 base plans rose in price on 1 July 2026. Business Basic moved from 6 to 7 dollars and Business Standard from 12.50 to 14, while Business Premium held at 22. Copilot’s own price held too, but the total cost of a Copilot-enabled seat went up, because every seat is base plan plus add-on. If your team sits on mixed or legacy plans, consolidating onto eligible Business plans is a prerequisite, and it is easiest done at renewal.
Who needs a paid seat, and who is fine on Copilot Chat?
License the people whose week is dominated by documents, email and spreadsheets. Owners, operations leads, account managers and anyone producing proposals or reports gain the most from Copilot working inside their apps and their data. Staff whose work lives in specialised systems, or who handle short transactional messages, are usually well served by the included Copilot Chat.
The arithmetic is forgiving. At roughly £17 a month, a person whose fully loaded cost is £25 an hour covers the licence by saving about forty minutes a month. Forrester’s economic impact research on Copilot documents meaningful time savings on drafting, summarising and meeting recaps, though the study population is large enterprises, and the evidence at five-to-fifty-person scale is thinner.
So run your own trial. Buy a handful of seats for the heaviest writers in the firm, give it two or three months, and read the analytics alongside what people tell you. Licences can be reassigned through the admin centre, so a wrong first guess costs little. One more reason not to over-buy on day one, Microsoft is adding Copilot Chat enhancements and analytics to the Business suites over summer 2026, which raises what the included tier can do without any extra spend.
What else should you check before you buy?
Cost is only one of the questions worth settling before you commit. Whether Copilot is safe with your firm’s data is a separate assessment, covered in Is Microsoft Copilot safe for business?. What you are agreeing to when you switch it on sits in Microsoft Copilot business terms of use, explained. And if the Business versus Enterprise plan choice applies to you, there is a walkthrough in Copilot Business vs Enterprise, which plan?.
The decision itself is smaller than the naming suggests. Work out who in the team spends their week in documents, mail and spreadsheets, price those seats at the standard rate on top of your base plans, and test the time saved against what those people cost. If you would like a second pair of eyes on the sizing before you commit, book a conversation.
