Can we share M365 licenses between our two legal entities?
No. Microsoft ties licenses to a tenant, and to unique users within that tenant. Two entities with separate tenants cannot pool seats, even with the same shareholder.
Try this first
- 1Confirm whether both entities have their own tenants (own domain, own Azure AD), visible in admin.microsoft.com per environment.
- 2Choose a model: keep separate tenants with own licenses, or a holding model with one tenant and cross-charging via guest accounts.
- 3For cross-entity work: use B2B guest access for SharePoint or Teams, not license sharing.
- 4Document costs per entity separately, fiscally mixing is unwanted too, ask your accountant about internal cost allocation.
When to bring us in
If you face a holding structure with duplicate licenses, we can help with a tenant strategy that fits legally and fiscally.
See also
- New hire has an account but cannot reach Outlook or TeamsAn M365 account without a license is an empty shell. Assigning takes a few clicks, but picking the right plan pays off long-term.
- Employee left, but their email must be retainedPulling the license straight away starts a 30-day timer on the mailbox. The right route keeps access to the mail without paying for the license.
- We pay for licenses nobody usesBetween leavers, duplicate plans, and test accounts there is often 10-20% wasted license spend. A usage report exposes it fast.
None of the above fits?
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