Microsoft Teams vs Slack
Compare Microsoft Teams and Slack on features, pricing, and buyer fit using the same researched criteria.
Microsoft Teams
M365 collaboration hub (chat, meetings, files) with optional Teams Phone telephony add-on — free Teams tier exists; Phone Standard ~$10/user/month annual plus PSTN.
Best for
- • Organisations standardised on Microsoft 365
- • Buyers who need chat + meetings + files under one identity plane
Starting from $0.00/user/mo
Free plan available
VS
Our verdict
Depends — no universal winner. This is a collaboration comparison, not a phone shootout. Slack wins for channel-first tech/product team messaging culture; Microsoft Teams wins as the M365 collaboration hub (chat, meetings, files, identity). Buy phone separately (or Teams Phone) if PSTN is required.
Microsoft Teams is better for
- ✓ Number / country coverage
- ✓ Routing & IVR
Tie
- • Power dialer
- • WhatsApp Business
- • CRM / CTI integrations
Choose Microsoft Teams if: Organisations standardised on Microsoft 365
Choose Slack if: Tech and product orgs standardising on channel-based team messaging
Slack
Channel-based team messaging platform — Free $0, Pro $7.25/user/month annual, Business+ $15, Enterprise+ contact sales; huddles for light video, not a phone system.
Best for
- • Tech and product orgs standardising on channel-based team messaging
- • Teams that want Slack Connect and a deep app directory
Starting from $7.25/user/mo
Free plan available
Microsoft Teams vs Slack pricing
Slack: Free $0, Pro $7.25, Business+ $15 per user/month annual; Enterprise+ contact sales. Microsoft Teams: free tier + M365 bundling; Teams Phone Standard ~$10/user/month annual plus Calling Plan ~$17 or Domestic+International ~$34 research floors. Research 2026-08-17.
Microsoft Teams
From $0.00/user/mo
Slack
From $7.25/user/mo
Microsoft Teams
Starting from $0.00/user/mo
Free trial available
- Microsoft Teams Free$0.00/user/mo
- $0 — free Teams chat and meetings tier. Not full enterprise M365 governance; telephony requires Teams Phone + PSTN on top of an eligible licence.
- Teams Phone Standard$10.00/user/mo
- ~$10/user/month annual telephony add-on. Requires a separate eligible Teams/Microsoft 365 licence — not a standalone cloud-phone product.
- Teams Calling Plan$17.00/user/mo
- PSTN Calling Plan research floor ~$17/user/month — one of several PSTN options (PAYG ~$13, Domestic+International ~$34). Confirm live Microsoft price lists.
- Microsoft 365 EnterpriseCustom
- Most enterprise Teams deployments are licensed via Microsoft 365 Business/Enterprise SKUs rather than standalone Teams. Contact Microsoft or a partner for bundle pricing.
Slack
Starting from $7.25/user/mo
No free trial evidenced
- Free$0.00/user/mo
- $0 — limited message/file history and core channel messaging. Primary evaluation path (no published free trial on paid plans).
- ProPopular$7.25/user/mo
- $7.25/user/month billed annually ($8.75 monthly). Unlimited message history, huddles, canvas and core productivity features for growing teams.
- Business+$15.00/user/mo
- $15/user/month billed annually ($18 monthly). Stronger admin, compliance and AI assistance versus Pro.
- Enterprise+Custom
- Contact sales for Enterprise+ security, compliance and large-org controls.
Estimate your team cost
Monthly estimate from verified per-seat list pricing. Confirm on the vendor site before purchasing.
Microsoft Teams
$0.00/mo
Slack
$108.75/mo
+$108.75/mo — Slack costs more
Verified monthly unit prices · Aug 17, 2026
Prices in USD
Shown per user / month from verified list pricing.
Plans can change
Confirm live vendor rates before purchasing.
Add-ons may apply
Calling, SMS, or usage fees can add cost.
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