Tenant Migration

How to Transfer Microsoft 365 Ownership During a Business Acquisition

Phi Hung Vo Oct 12, 2026 869 views

Question details

The user needs to securely transfer administrative control, ownership, and billing of a Microsoft 365 business account to new owners during a business acquisition, without disrupting employee access.

How to Transfer Microsoft 365 Ownership During a Business Acquisition

Product: Microsoft 365
Device & OS: not provided
Scenario: Acquiring a business and taking over its Microsoft 365 tenant and administrative functions.
Observed behavior: The goal is a seamless transition of the Microsoft 365 Global Administrator role, billing information, and user licenses to maintain business continuity.

Before you start

Ensure you have the current Global Administrator's login credentials available and verify that all critical business data is securely backed up before initiating the transfer process.

Solution 1Recommended

Transfer Global Administrator Roles and Update Billing

The primary method to transfer ownership involves assigning Global Administrator rights to the new owners in the admin center and updating the financial details.

To ensure a seamless transition during an acquisition, administrative control must be handed over before adjusting user roles or data structures. This requires access to the Microsoft 365 admin center using the current owner's credentials.

Assign Global Admin rights

Log in to the Microsoft 365 admin center with the current owner's account. Navigate to 'Users' > 'Active users', select or create the new owner's user account, and click 'Manage roles'. Assign the 'Global Administrator' role to the new owners.

Update billing and contact information

Go to 'Billing' > 'Billing accounts' (or 'Your products'). Update the primary contact details, organizational profile, and add the new payment methods to ensure uninterrupted subscription renewals.

Adjust user accounts and licenses

Keep the previous owners' accounts active if they are remaining as employees. Navigate back to 'Active users' and modify their roles to remove Global Administrator privileges, assigning standard user permissions appropriate to their new roles.

Review security, aliases, and compliance

Audit all existing permissions, security settings, and compliance policies. Set up any necessary email aliases or forwarding rules to ensure communication continuity.

Transfer Global Administrator Roles and Update Billing

Consider IT Support for Complex Migrations: If the business transition involves sensitive data, complex SharePoint architectures, or merging two different Microsoft 365 tenants, consider consulting with a professional IT service provider to avoid data loss.

Free Microsoft Office alternative

Transitioning your business? Try WPS Office for seamless productivity.

While managing your Microsoft 365 tenant migration, consider WPS Office as a free, lightweight, and highly compatible alternative for your team's document creation and editing needs. It's a cost-effective solution for growing businesses.

1. Download and Install: Visit the official WPS website to download the free installer for your operating system.
2. Open Existing Documents: Launch WPS Office and directly open any existing Microsoft Office files (.docx, .xlsx, .pptx) without formatting issues.

Fully compatible with Microsoft Office formats (Word, Excel, PowerPoint).Familiar user interface ensuring zero learning curve for migrating employees.Cost-effective solution for growing businesses after an acquisition.Lightweight and fast, requiring minimal system resources.

microsoft office alternative - wps office

Frequently Asked Questions

Can I merge two Microsoft 365 tenants during an acquisition?

Merging tenants is a complex administrative process that usually involves using Microsoft's cross-tenant mailbox migration or third-party migration tools to move domains, users, and data from the acquired tenant into your primary tenant.

What happens to the previous owner's email address if they leave?

If the previous owner leaves the company, you can convert their mailbox into a 'Shared Mailbox'. This frees up their license and retains their email history, allowing remaining staff to monitor incoming emails.

Do I need to buy new Microsoft 365 licenses when taking over the tenant?

No, the existing licenses are tied to the tenant, not the individual who originally purchased them. You simply need to update the billing information to ensure future renewals are charged to the new ownership.

Migration & Recovery