What changed
Microsoft announced that starting December 1, 2026, new Microsoft 365 Copilot Business licenses purchased through its Cloud Solution Provider program will include usage-based billing enabled by default. The traditional 30-dollar-per-seat monthly license stays, but long-running AI agents like Copilot Cowork now rack up additional charges based on how much computational work they perform. Each new license comes with a preset spending limit of 4,000 Copilot Credits per user per month; administrators can adjust that cap.
The billing covers model responses, tool and skill calls, image generation, browser tasks, and other activity that consumes credits. Everyday Copilot features—chat, in-app assistance—stay covered by the seat license with no extra charge.
What you can do with it now
Before you assign Copilot to more team members, set a budget and a task to test. Pick one concrete, recurring job—drafting client proposals, summarizing meeting transcripts, pulling together competitive research—and track what one completed, usable result actually costs. Not what the agent spent trying, but what it took to get something your team could use without a second pass.
Microsoft's system will tell you how many credits were consumed and which users generated the spending. It won't automatically tell you whether the output was worth buying. Build that tracking yourself: log the task, the credits consumed, and whether the result shipped as-is or needed rework. After ten attempts you'll know if the agent saves you time or just moves the bill.
What to keep in your own hands
Set hard spending caps before the meter runs, and make sure you can see the bill weekly, not monthly. Microsoft offers budgets, alerts, and policies to stop runaway agent usage. Use them. An agent that costs one dollar and delivers a usable result beats an agent that costs 50 cents, retries twice, and consumes another dollar in corrections and human cleanup time.
Keep a simple cost-per-accepted-task log for any work you're handing to agents. If the bill climbs but the time saved doesn't, you're paying for activity, not productivity. Review your caps and your task list every month. The moment a task becomes cheaper to do yourself, pull it back.