What drives the cost of a Google Workspace migration?
Four things drive most of the cost: users, data, source platform, and scope. Each one changes how much planning, copying, testing, and support the project needs. Two organizations with the same headcount can have very different migrations if one has light inboxes on a hosted IMAP service and the other has years of archives on an on-premises Exchange server.
It helps to separate the two kinds of cost. The migration is a one-time project. Google Workspace licensing is an ongoing subscription. Both matter, but you decide them differently. The migration cost is about effort and risk: how much has to move, how carefully, and on what schedule. The licensing cost is about which edition fits your team for the years ahead.
There is also an internal cost that rarely shows up on a quote: your team's time. Someone has to answer questions about users and data, approve the plan, and send staff messages. A clear owner and quick decisions keep that cost low.
How do users and data volume affect cost?
Users and data volume affect cost because each mailbox and file location has to be inventoried, copied, checked, and supported. More users means more accounts to create, more phones to set up, and more questions in the first week. More data means longer copies and more delta passes to manage.
Data volume is often the bigger factor. Large archives take longer to move because both Google and Microsoft limit transfer speeds. Cleaning up old mail and duplicate files before the copy reduces the work. Our guide on how long a Google Workspace migration takes explains why volume matters so much.
How does your current platform change the work?
Your current platform changes the work because each source has different access methods, data formats, and quirks. A move from a hosted IMAP provider is usually the simplest. Microsoft 365 adds calendars, OneDrive, SharePoint, and Teams. An on-premises Exchange server may involve direct server access, public folders, and older versions. HCL Notes has its own formats and often decades of history.
Each has its own page: Microsoft 365 migration, Exchange migration, IMAP migration, and HCL Notes migration.
Which extras add to the scope?
Extras add scope when they need design and testing beyond moving data. Common ones include:
- Shared mailboxes and distribution lists rebuilt as Google Groups.
- Active Directory sync, so accounts stay matched to your existing directory.
- SAML single sign-on to other business apps.
- A staged migration instead of a single cutover.
- A weekend switchover.
- A dedicated account manager for coordination.
These map to our plans. The Free plan is a self-service email tool. Standard is a managed migration of email, contacts, calendars, and files with delta sync and a weekday switchover. Premium adds the extras above. Details are on our pricing page.
How do licensing costs fit in?
Licensing is an ongoing monthly or annual expense, separate from the migration. As of October 2026, annual plans are $7 per user per month for Business Starter, $14 for Business Standard, and $22 for Business Plus. Flexible plans, billed monthly with no commitment, are $8.40, $16.80, and $26.40.
Compare these with your current Microsoft invoice, including any add-ons, rather than with published price lists. Also budget for a short overlap when you pay for both systems while the migration finishes. Our guides to Google Workspace pricing and comparing the cost of Microsoft 365 and Google Workspace go deeper. For the full process, see how to plan a Google Workspace migration.
Next step
See what each plan includes on our migration plans and process page, or contact us for a quote based on your users and data.
Frequently asked questions
Is the Free plan enough for a small office?
It can be, if you are moving email only from a simple source and someone on your team is comfortable with DNS and the Google Admin console. If you also need calendars, contacts, files, or shared mailboxes moved, a managed plan usually saves time.
Do we pay for two systems during the migration?
Usually for a short time. You need Google Workspace licenses before data can be copied in, and you keep the old system active until the delta pass is done and people confirm nothing is missing. Plan the overlap into your budget and cancel the old licenses on a set date.
