Most organisations are paying for Microsoft 365 licences they don't actually use. It's one of those costs that creeps up quietly—someone leaves, a contractor finishes their project, a department restructures—and suddenly you've got a dozen seats sitting idle, billing away month after month. Cleaning up your licence allocation isn't complicated, but it does require a deliberate review. The payoff? You stop paying for what you're not using, and you often discover you can downgrade some users to cheaper plans without affecting their work.

Why do unused Microsoft 365 licences pile up?

It happens to nearly every business. The usual culprits:

Staff turnover without licence review – When someone leaves, their account might get disabled, but the licence stays assigned.
Over-provisioning "just in case" – IT assigns premium licences to everyone because it's easier than figuring out who actually needs what.
Seasonal or contract workers – Temporary staff get full licences, finish their contracts, and the seats remain allocated.
Departmental sprawl – Different teams buy their own subscriptions without central visibility.

None of this is malicious. It's just the natural drift that happens when licence management isn't a regular habit.

How do you find unused or underused licences?

Microsoft provides tools for this, though they're not always obvious.

Open the Microsoft 365 Admin Centre and go to Billing > Licences.
Check the usage reports under Reports > Usage. Look for accounts with little or no activity over 30, 60, or 90 days.
Review inactive users – accounts that haven't signed in recently are prime candidates for licence removal or downgrade.
Compare licence types to actual usage – does that user with a Business Premium licence actually use Intune, Azure Information Protection, or advanced compliance features? If they just need email and Word, Business Basic might be enough.

For larger organisations, Microsoft's Licence Advisor tool or a third-party management platform can automate much of this analysis.

What's the difference between removing and downgrading a licence?

Removing a licence means the user loses access to Microsoft 365 services entirely. Do this for departed employees or accounts that shouldn't exist.

Downgrading a licence means moving someone from a higher-tier plan (like Business Premium) to a lower one (like Business Basic). They keep access to core services but lose premium features they weren't using anyway.

Licence Tier	What's Included	Typical User
Business Basic	Web/mobile apps, email, Teams, 1TB OneDrive	Frontline staff, light users
Business Standard	Desktop apps, everything in Basic	Office-based staff who need full desktop apps
Business Premium	Standard + Intune, advanced security, compliance	Users handling sensitive data, remote device management

If someone's just checking email on their phone and occasionally joining a Teams call, they don't need Premium.

How often should you audit licences?

Quarterly works well for most businesses. Monthly is better if you have high turnover or lots of contractors. At minimum, review licences whenever:

Someone leaves the organisation
A project or contract ends
You're renewing your Microsoft 365 subscription
You're planning your IT budget

Set a calendar reminder. It takes an hour or two and often pays for itself immediately.

What happens to data when you remove a licence?

This is the question that makes people nervous—and rightly so.

When you remove a licence, the user loses access, but Microsoft retains the data (emails, OneDrive files, SharePoint contributions) for a grace period. The exact retention depends on your admin settings and the type of content. Before removing any licence:

Back up or export anything you need to keep
Transfer mailbox contents or OneDrive files to another user if required
Check your organisation's data retention policies

Don't rush this step. A few minutes of preparation prevents headaches later.

Frequently asked questions

Can I reassign a licence to a new employee?
Yes. Once you remove a licence from one user, it's immediately available to assign to someone else. You're paying for seats, not named individuals.

Will users notice if I downgrade their licence?
They'll lose access to features included in the higher tier—like desktop Office apps if you move them from Standard to Basic. Check what they actually use before making the change.

How do I know if someone's using premium features?
The usage reports in the Admin Centre show activity by app. If someone has Business Premium but only ever opens Outlook and Teams, they're probably fine on a lower tier.

Is there a way to automate this?
Partially. You can set up alerts for inactive accounts and use group-based licensing to standardise assignments. For full automation, third-party tools like CoreView or Zylo integrate with Microsoft 365 for ongoing optimisation.

Let's sort out your Microsoft 365 licences

If you suspect you're paying for seats you don't need—or you're just not sure—we can help. At Blue Chip Technologies Ltd., we work with businesses worldwide to review Microsoft 365 deployments, identify waste, and right-size licence allocations. It's a straightforward process, and the savings often surprise people.

For more on how we support Microsoft 365 and cloud productivity solutions, get in touch: