Cowork doesn’t just answer a question. It goes and does the work: builds the deck, writes the email, updates the sheet, and hands you a finished result. That’s the whole pitch, and it’s genuinely a game changer in the way we all work.

But here’s the part nobody tells you up front: every one of those steps has a price tag, and Microsoft is keeping a running tab while Cowork works. Use it like free chat or without intention, and you’ll burn through your credits before lunch.

Cowork bills you for the model it uses, how much of your data it digs through, how many actions it takes, and how long it runs. Cut any of those four, and the bill drops. Here’s exactly how.

What this looks like

When you should use Copilot (free, use it all day):

• “Turn this email thread into three bullet points for my manager.”
• “Tighten up the wording on slide 4.”
• “Pull the total from this spreadsheet and give me a one-line summary.”
• “Draft a reply declining this meeting, keep it friendly.”
• “Clean up the formatting on this table.”

When you should use Copilot Cowork (billed per task, worth it when it’s real):

• “Go through last quarter’s emails, the shared drive, and our Teams channel, then build a board-ready status deck.”
• “Compare these 40 vendor contracts against our new terms and flag anything that changed.”
• “Prep me for tomorrow’s customer call: pull the account history, the last three emails, and any open tickets into one brief.”
• “Reconcile this month’s expense reports against the budget and flag anything over threshold.”

Copilot is a conversation until you land on an answer. Copilot Cowork is a set of instructions you hand off, then a finished result you come back to. Use Cowork when you need it to gather from a few places, make some calls, and hand back something finished.

Wait, why does this Cowork even cost anything?

Because Cowork isn’t a chat message, it’s a worker. Regular Copilot (Chat, plus Copilot inside Word, Excel, PowerPoint, Outlook, and Teams) is already covered by your license. Flat fee, use it all day, no surprise.

Cowork sits on top of that and gets billed separately, per task, in something Microsoft calls Copilot Credits. It’s the difference between having a phone plan and hiring a contractor. One’s a subscription. The other bills by the hour.

What actually runs up the bill

Four things, and only four:

1. The model. Bigger, smarter models cost more per task.
2. What it has to dig through. Point it at your whole mailbox and it has to search your whole mailbox.
3. What it actually does. Every file it makes, every email it sends, every Teams post, that’s an action, and actions cost credits.
4. How long it takes. A task that wanders costs more than one that knows exactly where it’s going.

Light tasks run about $1 to $3. Medium tasks, $4 to $7. A heavy, multi-output task can blow past $7. All these fees add up through the day. Creating a PowerPoint deck based on existing content in SharePoint can quickly consume $10+ in credits before more interactions for updates are sent to Cowork. Most people get a default cap of individual or shared credits per month before an admin has to step in. That cap disappears fast if you’re not paying attention.

The 12 ways to spend less and get more from Copilot Cowork

1. Don’t hire Cowork to do a chat’s job. “Summarize this thread” or “clean up this table” is free Copilot chat. Sending it to Cowork is like calling a moving company to carry one box. Similarly, asking Cowork to do deep-dive research when Copilot Researcher is made for that, will burn through your credits in no time for no reason.
2. Say exactly what you want, once. “Build me a competitor deck” makes Cowork guess. “Build a five-slide deck comparing pricing and features for these three named competitors, using the attached research doc or this research from Copilot” gets there in one pass instead of three.
3. Point it, don’t unleash it. Give Cowork the three emails and the one folder that matter for the customer brief. Not your whole inbox. Not “everything relevant.” The wider the net, the bigger the bill.
4. Filter before you compare. Checking those 40 vendor contracts? If only 6 changed terms this year, hand it those 6. Don’t make it wade through all 40 to find them itself.
5. Ask for what you need. Just that. One deck. One summary. One file. Not “make me a deck, a PDF, and an email just in case.” Each extra output is an extra charge. A skill helps enforce this before you even ask: build one for a recurring job, like a weekly status report, and it locks in the right sequence, the right sources, and the right single output every time, so Cowork isn’t improvising a scope each time you run it. Rightsize the skill once, and every run after that stays rightsized too.
6. Pick one file format and stop there. A PowerPoint, a PDF, an image, each one is its own billed action. Decide what you actually need before you ask.
7. Convert before you feed it in, not after. Handing Cowork a PDF or a Word doc to analyze means it has to process all the layout and formatting noise along with the actual content, page coordinates, font data, embedded styling, none of which it needs to answer your question. Convert source files to markdown first, then hand Cowork the clean version. Same content, less tokens, since “what it digs through” is billed either way. You can convert using Copilot directly! Depending on the document type, converting it before analysis could save anywhere from 10%-90% of credit usage.
8. Check the receipt. Type /cost when a task finishes. Now you know exactly what it cost, and whether it’s worth doing again that way.
9. Ask for more credits, don’t fight the wall. Running low mid-task? Request more from inside Cowork. Don’t abandon the work or try to sneak around the limit.
10. Use the lighter model when the job is light. Cowork has a model built specifically for everyday tasks at a lower cost. Save the heavyweight model for the jobs that actually need deep reasoning across a pile of sources.
11. Remember Copilot itself is basically free to use as much as you need with your license. Chat, Word, Excel, PowerPoint, Outlook, Teams, all covered by your license. Use it constantly. There’s no meter running.
12. Keep an eye on Copilot’s other meters. Image generation, Vision, and in-app Actions inside regular Copilot pull from their own separate monthly credits. Not Cowork, but still worth watching if you use them a lot.

Cowork or Copilot? The one-line rule

Copilot works alongside you, one prompt at a time, so you stay in every step. Cowork works for you, taking a whole job and handing back a finished deliverable when you’re ready to review it.

Dive deeper with our blog, Copilot Chat vs. Copilot Cowork: Know the Difference, Use the Right One.

FAQ

Is Cowork included in my Copilot license?

No. Your license covers Chat and in-app Copilot. Cowork runs on top of that and bills separately, per task, in credits.

What does a task actually cost?

Roughly $1 to $3 for something light, $4 to $7 for medium, $7 and up for heavy multi-output work, at the standard rate of $0.01 a credit.

I’m about to run out mid-task. Now what?

Request more credits from inside Cowork. An admin can approve just your request without changing the limit for everyone else.

Is regular Copilot metered too?

Chat and in-app use aren’t. Image generation, Vision, and Actions inside Copilot are, through a separate credit pool.

How do I check what a task cost?

Type /cost right after it finishes. It’ll tell you the exact number.