Independent cost comparison
Slack vs Microsoft 365 pricing 2026.
Test a dedicated team-chat platform against collaboration already included in a broader productivity suite.
Team chat
Slack
- Active members and guest design
- History, AI, security, and compliance
- Overlap with an existing productivity suite
Productivity
Microsoft 365
- Business, enterprise, and frontline mix
- Security, device management, and voice add-ons
- Inactive accounts and duplicate applications
Like-for-like cost model
Compare your Slack and Microsoft 365 costs
Use complete monthly costs in the same currency and billing scope. Nothing is uploaded or stored.
Slack per user / monthZAR 40
Microsoft 365 per user / monthZAR 32
Annual differenceZAR 2,400
Three-year difference after switchingZAR 4,700
A positive difference means the entered Microsoft 365 cost is lower. Verify features, taxes, usage, migration, training, and contract exit terms.
Decision factors
- External collaboration and guest design
- Retention, search, AI, and compliance
- Existing Microsoft licensing and duplicate spend
- Normalize contract length, taxes, implementation, support, migration, and exit costs before deciding.
Independent comparison. SaaS Cost Check is not affiliated with either vendor. Product names belong to their respective owners. Verify current pricing and requirements directly with each vendor.