
Microsoft Security Copilot uses Security Compute Units (SCU) to measure the compute power used to run various workloads. A quantity of these is now available with Microsoft 365 E5 licenses, rollout starting from November 18th 2025..
What SCU capacity is included with Microsoft 365 E5 licenses?
Each Microsoft 365 E5 license includes 0.4 SCU so, for example, an organisation with 1,000 M365 E5 licenses will have 400 SCU per month. The allocation resets monthly and unused SCU cannot be rolled over to the next month.
There is a maximum limit of 10,000 included SCU per month – this is equivalent to 25,000 M365 E5 licenses.
Pricing considerations
Should organisations exceed their M365 E5 included SCU quantity, overage SCU will be available for $6 per SCU on a Pay As You Go (PAYG) basis. That is 50% higher than the “Provisioned” SCU pricing of $4.
However, an interesting point – and something that adds complexity to these decisions – is that the included SCU provide more flexible billing than the traditional provisioned capacity model.
Under provisioned capacity, an organisation commits to a set number of SCU per hour and is charged for that amount even if actual usage is lower. With E5, the included SCU are drawn down only by the amount actually consumed each hour, which provides a more accurate reflection of usage and avoids paying for unused capacity:
- With Provisioned Capacity, if you provision 5 SCU but only use 3.5 – tough, you pay for all 5.
- With E5 Included, you would only use 3.5 SCU.
This addition is another move to keep organisations on M365 E5, rather than stepping down to E3 +add-on.
SCU included with Microsoft 365 E5 – https://learn.microsoft.com/en-gb/copilot/security/security-copilot-inclusion
















