Microsoft is switching on pay-as-you-go billing for advanced AI features for new Microsoft 365 Copilot Business subscriptions.
From December 1, new licences purchased through the Cloud Solution Provider (CSP) programme will automatically include the Azure infrastructure required for pay-as-you-go AI services.
Normal Copilot activity covered by the user licence will remain included, but services such as Cowork, Code and other advanced agentic capabilities will consume chargeable Copilot Credits from the moment they are used.
Microsoft will apply a default limit of 4,000 credits (about $40 per user per month), as a spending cap, but please note that it’s not an included allowance. While the cap limits the size of an unexpected bill, if you don’t double check your settings it might not prevent one.
In this article, we’ll tell you everything we know so far and our tips to control costs.
A default pay-as-you-go AI credit spend
The change does not mean Microsoft is about to bill you for every normal Copilot prompt – it’s just introducing the pre-set pay-as-you-go limit for advanced AI capabilities.
How does it work? Let’s look at a few examples.
Scenario 1: Jane uses her Microsoft 365 Copilot Business subscription for standard AI stuff like chats, organising her emails in Outlook, generating text and images and structuring documents in Word. She doesn’t use any chargeable Cowork or other metered services.
Result: no additional usage charge.
Scenario 2: Jane uses Copilot Cowork throughout the month for tasks such as preparing for customer meetings, organising her inbox, reviewing her sales pipeline, responding to tenders, and creating a branded customer presentation. Let’s say this consumes 4,000 Copilot Credits.
Result: the business is charged approximately $40 on top of Jane’s existing Copilot subscription. She has reached the default 4,000-credit monthly limit, so further chargeable use should stop unless an administrator increases her limit or another applicable policy gives her additional capacity.
Scenario 3: Jane is absolutely hammering Copilot Cowork because it is saving her time. An administrator has increased her monthly limit, allowing her to consume 10,000 Copilot Credits on long-running tasks and asset creation.
Result: the business is charged approximately $100 in additional usage fees for Jane that month, on top of her existing Copilot subscription. This is only possible because an administrator has raised the default limit; it would not happen under the original 4,000-credit cap.
Scenario 4: The business reviews Jane’s usage and decides the additional cost is too high for the value being returned.
Result: An admin can either reduce her credit limit or remove her from any spending policy that selects Cowork.
Usage is recorded throughout the month and appears against the connected Azure billing method. Admins can create policies for particular people or groups, choose which chargeable services those policies cover, set limits, and configure alerts. They should review which AI services, including Copilot Cowork, are available through their spending policies before assigning licences.
Our advice to avoid unexpected bills
It would be wise to double check if the ‘auto-apply new services’ setting has been enabled by default for your spending policies, as that could allow future usage-based services to inherit an existing policy unless the administrator turns that setting off.
We would suggest creating a small pilot group and configuring alerts to monitor the cost of AI credit consumption and the business value of completed tasks. Access can then be expanded once meaningful use cases are collected.
A reminder of your Copilot options as a business
Eligible Microsoft 365 commercial users receive a secure Copilot Chat experience included, which also features enterprise data protection (prompts and responses are processed under Microsoft’s commercial data-protection terms and are not used to train the underlying foundation models).
The basic experience can work with web information, content pasted into the chat, files deliberately uploaded or selected, and some information available within the context of particular apps.
What is included with the paid Copilot Business licence?
The paid licence covers the everyday Microsoft 365 Copilot experience, including Copilot Chat, Copilot Notebooks, priority access, Researcher and Analyst, and Copilot embedded across apps such as Word, Excel, PowerPoint, Outlook and Teams. It can use Work IQ within these licensed experiences to draw on the emails, meetings, files and other business information that the user is already permitted to access. This everyday activity remains covered by the per-user subscription, although Microsoft applies fair-use limits to some models and capabilities.
What is separately chargeable?
Additional charges apply to specified advanced and long-running agentic services, including Copilot Cowork, Copilot Code, Work IQ APIs, the GitHub Copilot harness and certain advanced Copilot Studio or SharePoint activities.
Why has Microsoft done this?
Microsoft has made the change to remove setup friction, let customers access advanced AI capabilities more easily, and allow partners like us to focus on adoption rather than billing configuration. However, businesses that do not want employees to use separately chargeable services should ask their Microsoft partner or administrator to disable usage-based billing or set the spending limit to zero before licences are assigned.
Currently, an organisation has to make a deliberate administrative decision to set up usage-based billing, but from December, qualifying new CSP Copilot Business customers will have that foundation already laid.
Our advice to prepare for usage-based billing
Businesses should consider which employees genuinely need usage-based services, reduce or remove limits where appropriate, switch off automatic access to future services, and monitor costs before encouraging widespread experimentation.
Microsoft 365 Copilot Business usage-based billing switch FAQs
What happens when you reach the AI credit cap?
Once a user reaches their 4,000-credit monthly limit, chargeable activity should stop. The user is notified that they have reached the limit and can request more capacity through the interface. An admin must then review and approve that request before increasing the limit, taking the likely cost, business need, and any compliance requirements into account. Admins can monitor consumption in the Microsoft 365 admin centre.
What if you add more Copilot seats after December 1?
The change is not limited to businesses buying Copilot for the first time. From December 1, default-on usage-based billing is also triggered when a business adds more Copilot Business seats to an existing subscription, upgrades to an eligible Copilot Business package or moves the subscription to a new partner. In other words, an existing customer could encounter the new Azure subscription and spending-policy setup when making what appears to be a routine licence change. You should discuss new licences with your Microsoft Partner, who can advise on this.
Before enabling Microsoft Copilot, it is worth carrying out an AI readiness assessment to check that your permission structures across SharePoint and OneDrive are appropriate, that sensitivity labels are applied to confidential data, that audit logging is enabled, and that your team understands what Copilot and Cowork can access. Since the new process automatically enables usage-based billing, organisations should review which AI services, including Copilot Cowork, are available through their spending policies before assigning licences. It’s always sensible to check that the foundations are in place first.
For more information about booking an AI readiness assessment, contact our team on 01782 916920.