BUILT BY SEGMENTUM · COWORK COST GUIDE
What Copilot Cowork costs an accountancy firm
For a typical 25-person accountancy firm, Copilot Cowork comes to roughly £3,350 a month all in - licences and usage together, about £134 per person. Below is the working, and the calculator set up with accountancy defaults so you can put your own numbers in.
Your team
Starting numbers match the example on this page - change them to fit your business.
Your estimate
Uses Microsoft's default usage mix and list pricing ($0.01 per Copilot Credit, billed in US dollars), ex-VAT. Licences assume Microsoft 365 Business Standard plus a Copilot licence per person. For the full step-by-step version, use the calculator on the home page. Pricing last verified 13 July 2026.
Where the usage actually goes
Accountancy work is spiky. Month-end, VAT quarters and January self-assessment season will push usage well above the average months - a task like "assemble the management pack for client X" is exactly the multi-step work Cowork charges heavily for. The flip side: much of a practice's routine correspondence is light-tier work that costs pennies.
The practical move is to switch Cowork on for a small group first - the partners and managers who build client packs - and watch a full month-end cycle before rolling it wider. Microsoft's admin tools let you cap spend per person or per group, so the January spike doesn't have to be a surprise.
One boundary worth knowing before you budget: Cowork sees what's inside Microsoft 365. It doesn't reach into your practice management, tax or bookkeeping software unless those are connected - so the work that lives in those systems won't get faster or cheaper. If most of your firm's day happens outside Outlook, Excel and Teams, your real usage may sit well below the defaults here.
Common questions
Is Cowork worth it for a small practice?
It can be - the strongest cases are client reporting, meeting preparation and research, where a task genuinely replaces an hour of someone's day. The weakest case is switching it on for everyone and hoping. Model it first, start narrow, and measure a full month-end cycle before deciding.
Can we cap what each person spends?
Yes. Spending limits can be set at firm, team or individual level in the Microsoft 365 admin centre, with alerts before caps are hit. For a practice, per-person caps on a pilot group is the sensible starting shape.
Does Cowork work with our practice software?
Out of the box, no - it works across Microsoft 365 (email, files, Teams, Excel). Practice management and tax platforms need connectors, where they exist at all. Budget on what Cowork can actually reach.
What happens to the cost in January?
It rises with usage - that's how pay-as-you-go works. If self-assessment season doubles heavy tasks for your senior team, expect the usage line (not the licence line) to climb with it. Caps and alerts keep it deliberate rather than surprising.
BEFORE YOU COMMIT
That's the cost. The harder question is whether it's the answer.
A new tool sitting on top of an estate that nobody fully understands usually adds cost, not clarity. So before you commit the budget, it's worth asking a simpler question: is Cowork actually your constraint, or is it something underneath it? We help established UK businesses get a clear view of what they're running - and whether the next bit of spend earns its place.
Pricing and defaults last verified
13 July 2026
against Microsoft's published documentation.
Figures use Microsoft list pricing ($0.01 per Copilot Credit, billed in US dollars) converted at roughly £1 = $1.27, ex-VAT. Usage defaults come from Microsoft's Cowork Frontier programme data. This is a budgeting aid, not a quote - confirm current pricing with Microsoft. This is an independent tool built by Segmentum and is not produced or endorsed by Microsoft. "Microsoft 365", "Copilot" and "Cowork" are trademarks of Microsoft, used for identification only.