Business Central Agents Break the Per-User Budget
Many mid-market finance teams chose Dynamics 365 Business Central for a simple reason. They could predict what it would cost. They knew the number of users, the licence type and the monthly figure. As a result, they built their budgets on that certainty.
Business Central agents work differently. Microsoft bills them per use, in Copilot Credits. So their cost moves with transaction volume, not headcount. At DAX Software Solutions, we see this as a budget decision. Finance leaders should make it on purpose, before the first agent goes live.
Why did per-user cost suit mid-market finance?
Because it tracks team size, which finance already plans. For example, a new accounts payable clerk means one more licence. Cost follows the hiring plan. Therefore, the annual budget holds.
Copilot features follow the same model. Microsoft’s Copilot in Business Central overview states that Copilot comes with the Business Central licence at no extra cost. However, Microsoft also notes that fair-use policies, quotas or pricing might come later.
How are Business Central agents billed?
Per use, in Copilot Credits. Microsoft’s Business Central billing guidance lists three agents with consumption billing. These are the Payables Agent, the Sales Order Agent and the Expense Agent (preview).
Microsoft’s published rates tie cost to business events:
- Expense Agent (preview): 50 Copilot Credits for each uploaded receipt
- Payables Agent: 50 Copilot Credits per invoice, plus 5 for each invoice line
- Sales Order Agent: credits per action. For example, 2 to analyze an email, 5 to check item availability and 5 to create or update an order
Microsoft also gives worked examples. For instance, 100 invoices with three lines each come to 6,500 Copilot Credits a month. Similarly, its Sales Order Agent example comes to 1,650 credits a month. In addition, emails without a valid invoice attachment cost nothing.
To help you tell the difference, Business Central has a Copilot and Agent Capabilities page. Its Billing Type column shows how each capability is charged. Microsoft may bill it, a partner may bill it, or it may not use credits at all.
Why do Business Central agents break a per-user budget?
Because the cost driver is volume, not headcount. If invoices double, the Payables Agent cost roughly doubles too. Yet the finance team may stay the same size.
Other changes move the bill as well. For example, a strong sales month raises order volume. Likewise, a new supplier adds invoice lines. In short, this cost behaves like freight or payment fees. It does not behave like a software licence.
What happens if the budget is wrong?
The agent can stop, not just overspend. Microsoft enforces Copilot Credit capacity each month. Unused credits do not carry over. Also, when quota runs out, the AI capability stops until someone adds more capacity.
So a prepaid pack that is too large wastes credits in quiet months. On the other hand, a pack that is too small runs out in busy months. Neither problem shows up in a budget that treats agents as a fixed licence line.
Governance matters here too. These agents should work under human review. So when capacity runs out, the people who rely on the agent need a clear plan for what happens next.
How should finance teams budget for Business Central agents?
Budget by volume, in ranges, with a funding mix.
- Separate included from billed: use the Billing Type column to see which features use Copilot Credits
- Link each agent to a volume driver: receipts, invoices, invoice lines or sales orders
- Model a range: build low, expected and peak months from last year’s volumes
- Choose a funding mix: Business Central supports prepaid capacity and pay-as-you-go. Prepaid gets used first, and you set pay-as-you-go budgets in Microsoft Cost Management
- Reserve capacity: by default, Business Central draws on the default Power Platform environment. So if other teams share the tenant, protect Business Central’s share
A common pattern is to prepay for the expected month. Then you use pay-as-you-go, with an agreed budget, to cover peaks. This also links to a wider question: who owns your Copilot Credits when several teams share one meter?
What does this look like in practice?
Take a growing distributor as an example. Imagine a business of about 120 people. It runs Business Central across two entities, with four people in accounts payable. Then, in one quarter, new suppliers come on board and invoice volume jumps. The licence count stays flat. However, the Payables Agent cost rises with every extra invoice and every extra line.
Nothing has gone wrong. In fact, the agent is working as designed. The budget was simply never built for this cost model.
Frequently asked questions
Is Copilot in Business Central free? Microsoft states it comes with the Business Central licence at no extra cost. However, fair-use policies, quotas or pricing might come later.
Which Business Central agents are billed per use? Microsoft lists the Payables Agent, the Sales Order Agent and the Expense Agent (preview).
Do unused Copilot Credits roll over? No. Microsoft enforces capacity monthly, and unused credits do not carry over.
Where does Business Central draw capacity from by default? From the default Power Platform environment in the tenant, unless you assign capacity elsewhere.
DAX Software Solutions: Your Partner in Agentic ERP
DAX Software Solutions implements and supports Business Central. We also advise on Agentic AI adoption, with governance and human oversight built in. Does your budget still assume every cost scales with headcount? If so, talk to our team before your first agent goes live.
Microsoft’s licensing and billing guidance is for information and may change. Check the current rates and terms for your tenant and agreement before you act.