Pricing comparison
Microsoft 365 vs Proton Business
Side-by-side pricing breakdown for Workspace & Email Suites decision-makers
Each amount uses its recorded currency; no currency conversion is applied. Confirm billing units, commitments, and current regional terms.
Compare the plan that fits your requirements
Check billing units, included usage and renewal terms. Starting prices alone do not establish an overall winner.
Dataset dated 2026-04-21. Sources: Microsoft 365 pricing and Proton Business pricing.
Affiliate links may earn us a commission. Both vendors remain available for comparison.
Recorded starting rates: Microsoft 365 $6/mo; Proton Business $7.99/mo. Billing units and commitments can differ. Compare the plans that include your required features, then request quotes for the same quantity and term.
Feature Comparison
| Feature | | |
|---|---|---|
| microsoft teams | Basic+ tiers | Not recorded |
| outlook exchange email | Basic+ (50 GB per user) | Not recorded |
| onedrive | 1 TB per user Basic+ | Not recorded |
| sharepoint | Basic+ | Not recorded |
| word excel powerpoint | Web apps Basic / Desktop Standard+ | Not recorded |
| clipchamp video editor | Standard+ | Not recorded |
| webinars | Standard+ | Not recorded |
| intune mobile device management | Business Premium+ | Not recorded |
| defender security | Business Premium+ | Not recorded |
| azure information protection | Business Premium+ | Not recorded |
| conditional access | Business Premium+ | Not recorded |
| power bi pro | Confirm the included analytics license for the exact subscription. | Not recorded |
| advanced compliance | Not assessed by StackScored; verify scope, vendor terms, and your obligations. | Not recorded |
| voice calling | E5 only | Not recorded |
| copilot ai | Confirm current inclusion, eligible base plans and any separate fee. | Not recorded |
| max users | 300 Business tiers / Unlimited Enterprise | Not recorded |
| excel desktop dominance | Evaluate required spreadsheet functions and file compatibility. | Not recorded |
| end to end encrypted email | Not recorded | Confirm encryption scope, recipient compatibility and metadata access. |
| swiss jurisdiction | Not recorded | Switzerland-based - subject to Swiss privacy law |
| custom domain email | Not recorded | All plans |
| proton vpn | Not recorded | Business+ included |
| proton drive encrypted storage | Not recorded | Business+ included |
| proton pass password manager | Not recorded | Business+ included |
| proton calendar encrypted | Not recorded | All plans |
| open source audited | Not recorded | Check the repository, app version and applicable audit report. |
| zero knowledge architecture | Not recorded | Confirm encryption scope, recipient compatibility and metadata access. |
| gdpr compliant | Not recorded | Not assessed by StackScored; verify scope, vendor terms, and your obligations. |
| hipaa baa | Not recorded | Not assessed by StackScored; verify scope, vendor terms, and your obligations. |
| 30 day money back | Not recorded | All plans |
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Dive Deeper
Microsoft 365
Proton Business
About the workspace & email suites category
Workspace subscriptions can bundle business email, files, office apps, meetings and administration. Email-only products cover a different scope. Compare the applications and licensed users you actually need.
How to choose between workspace & email suites options
Check document compatibility, mailbox and file storage, custom domains, meeting requirements and administration. Confirm the exact regional edition and distinguish web apps, desktop licenses and separately priced AI features.
Building Your Business Stack?
Decision-makers comparing tools often need more than one category. Here are related comparisons:
Frequently Asked Questions
- How do Microsoft 365 and Proton Business prices compare?
- Microsoft 365: $6/mo. Proton Business: $7.99/mo. These are recorded starting prices; compare billing units, included usage and contract terms before treating them as equivalent costs.
- Which is better for my requirements, Microsoft 365 or Proton Business?
- Compare the recorded features and plan limits against your requirements, then confirm them with each vendor. This page does not establish hands-on testing or an overall winner.
- What happens after the first billing term?
- Use any recorded renewal rate as a dated observation. When a future rate is missing, ask the vendor; do not assume the starting price remains unchanged.