Microsoft 365 has been the business standard for decades. But in 2026, Infomaniak's kSuite has become a credible alternative for European SMEs. Here is the most comprehensive comparison on the market to help you choose.
Summary for Decision-Makers
kSuite wins on: price (-20%), privacy (Switzerland vs USA), and storage (3 TB vs 1 TB/user).
Microsoft 365 wins on: Office app maturity, enterprise integrations, and advanced AI (Copilot).
Plan Comparison
| Criteria | kSuite Pro | M365 Business Basic | M365 Business Standard |
|---|---|---|---|
| Price/user/month | €9.99 | €6.00 | €12.50 |
| Cloud storage | 3 TB | 1 TB (OneDrive) | 1 TB (OneDrive) |
| 50 GB/user | 50 GB (Exchange) | 50 GB (Exchange) | |
| Video calls | kMeet (free) | Teams | Teams |
| Office suite | OnlyOffice | Office web apps | Full Office desktop apps |
| Data in Europe | Switzerland (outside CLOUD Act) | EU option (US company) | EU option (US company) |
The Privacy Issue with Microsoft 365
The CLOUD Act Problem
Even if Microsoft stores your data in European data centres (EU Data Boundary option), Microsoft remains a US company subject to the US CLOUD Act. American authorities can legally request access to your data. This reality is often overlooked during business tool selection.
Office Applications Comparison
This is Microsoft 365's undisputed strength:
- Native Office apps (Word, Excel, PowerPoint) on M365 Business Standard
- Perfect compatibility with .docx, .xlsx, .pptx formats
- Advanced features: VBA macros, complex Excel functions
kSuite uses OnlyOffice, which is excellent but slightly behind:
- Very good Office compatibility
- Functional real-time co-editing
- Some VBA macros not supported
Who Should Choose Which?
| Profile | Recommendation | Reason |
|---|---|---|
| SME 5-50 people | kSuite Pro | Price, storage, privacy |
| Regulated professions | kSuite Pro | Swiss data outside CLOUD Act |
| Heavy advanced Excel users | M365 Standard | VBA, complex functions |
| Enterprise 500+ users | M365 Enterprise | Native SAP/Salesforce integrations |
| Need Copilot AI | M365 + Copilot | Most advanced AI on the market |
Conclusion
In 2026, kSuite is a mature and competitive alternative to Microsoft 365 for European SMEs. It wins on price, generous storage, and data sovereignty. It yields ground on office app maturity and advanced AI. For 80% of SMEs whose main needs are email, storage, video conferencing and team messaging, kSuite is the better choice.
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