{"id":3295,"date":"2026-10-05T22:26:37","date_gmt":"2026-10-05T20:26:37","guid":{"rendered":"https:\/\/eu.klytic.com\/?page_id=3295"},"modified":"2026-10-06T17:21:31","modified_gmt":"2026-10-06T15:21:31","slug":"microsoft-365-migration-cost","status":"publish","type":"page","link":"https:\/\/eu.klytic.com\/en\/microsoft-365-migration-cost\/","title":{"rendered":"How much does a Microsoft 365 migration cost?"},"content":{"rendered":"\t\t
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Home<\/a>\u203a<\/span>Guides<\/a>\u203a<\/span>Migration<\/a><\/p>

Migration<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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How much does a Microsoft 365 migration cost?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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A price announced without an inventory is not a price. The cost of a Microsoft 365 migration depends on the number of mailboxes, the volume, what is not email, and who does the work. This page describes the cost items, the factors that make a quote vary and the costs people forget to count. It does not publish a fictitious flat fee.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Updated October 2026<\/b><\/span>9 min<\/b> read<\/span>Official sources cited<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Why there is no serious list price<\/h2>

What drives the work is not the number of employees: it is what the tenant contains, what is connected to it and what you decide to take with you.<\/p>

Take two hypothetical cases. A 25-person accounting firm mainly uses email, a few shared mailboxes and OneDrive, and only one piece of software sends mail. An industrial SME of comparable size, with two sites, has copiers in every workshop, production software that sends alerts, SharePoint libraries with fine-grained permissions and mailboxes under legal hold. With the same headcount, the second project requires far more preparation, checks and rework.<\/p>

This is why a serious quote starts with the inventory described in migrating from Microsoft 365 to a European solution<\/a>. Any amount given before this step rests on an assumption you cannot see.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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What you are really paying for<\/h2>

Copy and verification time.<\/strong> Copying 100 mailboxes of 2 GB has nothing in common with copying 100 mailboxes of 40 GB, archives and legal holds. Checking a sample, then the second pass for the delta, take human time even when the tool is automated. A tool copies; a person checks that the management folder, the accounting shared mailbox and the recurring appointments have arrived.<\/p>

The cases the tool cannot handle.<\/strong> Shared mailboxes with complicated permissions, public folders, encrypted messages, transport rules, SMTP connectors for copiers, the website and business software. This residue often accounts for half of the quote. It is handled case by case, and every case missed in the inventory comes back later as rework.<\/p>

Coexistence.<\/strong> The longer you want the two worlds to coexist (replying from the old calendar, sharing availability, staggered training), the longer the project lasts. A short, well-bounded coexistence costs less than a comfortable one that drags on.<\/p>

Files, if you include them.<\/strong> OneDrive can be copied. SharePoint with version history, permissions and public links has to be prepared. It is not the same cost item as email. Internal links within documents and anonymous shares are reviewed one by one when there are many of them.<\/p>

Cutover and DNS.<\/strong> On cutover day, the MX changes, and the new platform\u2019s SPF, DKIM and DMARC records must be published and checked on a real message. It is a short item, but it requires someone who controls the DNS and has the authority to roll back. The sequence is described in migrating an email service without downtime<\/a>.<\/p>

What you do not migrate.<\/strong> Teams, Power Platform and workbooks that require Excel must not be priced \u201cat the mailbox rate\u201d. Taking them out of scope lowers the bill and avoids failure. Leaving them in scope without saying so makes it explode in rework. If these uses are at the core of the business, the page Microsoft 365 versus a sovereign solution<\/a> helps decide what stays.<\/p>

Minimal training.<\/strong> One page for Outlook and mobile is enough for a standard email service. Broad change management is another project, to be priced separately.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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The factors that make the quote vary<\/h2>

For the same scope, a quote goes up or down depending on a few variables. Knowing them helps you understand the gap between two offers, and decide where you can act.<\/p>