Slack Pro $7.25 and Business+ $15 vs Microsoft 365 with Teams: Basic $7, Standard $14 and Premium $22 per user/month annually, before tax. Checked September 30, 2026.
| Tool | Free Tier | Standard Tier | Premium Tier | Pricing Model |
|---|---|---|---|---|
| Slack | Free | $7.25/user/mo | $15/user/mo | Per user per month |
| Microsoft Teams | Free | $7/user/mo | $14/user/mo | Per user/month (via Microsoft 365) |
US annual list rates, checked September 30, 2026: Slack and Microsoft. Microsoft rows are with-Teams bundles, not no-Teams SKUs. Existing contracts move to July rates at renewal.
| Plan | Per User/Month | Cost for 10 Users | Best For |
|---|---|---|---|
| Free | $0 | $0/month | Small teams, testing, side projects |
| Pro | $7.25/mo | $72.50/month | Growing teams, message search, unlimited integrations |
| Business+ | $15/mo | $150/month | Large teams, advanced admin controls, full message history |
| Enterprise+ | Custom | Custom | Enterprise, custom security, SSO, compliance |
| Plan | Per User/Month | Cost for 10 Users | Includes |
|---|---|---|---|
| Teams Free | $0 | $0/month | Teams only (60 min meeting limit, 100 message search history) |
| Microsoft 365 Business Basic | $7/mo | $70/month | Teams + Word, Excel, PowerPoint online + 1 TB OneDrive |
| Microsoft 365 Business Standard | $14/mo | $140/month | Above + Outlook + full desktop Office apps |
| Microsoft 365 Business Premium | $22/mo | $220/month | Above + advanced security, device management |
Key difference: Slack prices are for Slack alone. Microsoft Teams pricing includes Office apps (Word, Excel, PowerPoint, Outlook) bundled with Teams, making it better value if you need productivity apps.
| Feature | Slack | Teams |
|---|---|---|
| Free tier | ✓ (Full features, limited history) | ✓ (Limited: 60 min calls, 100 msgs) |
| Direct messaging | ✓ | ✓ |
| Group channels | ✓ | ✓ |
| Video/audio calls | ✓ (1-on-1, paid for groups) | ✓ (Full featured, unlimited) |
| Screen sharing | ✓ | ✓ |
| Message search | ✓ (Full history on Pro+) | ~ (Limited on free, unlimited on paid) |
| Integrations (Zapier, etc.) | ✓ (2,000+ apps) | ✓ (500+ native) |
| Office app integration | ~ (Via Zapier) | ✓ (Native with Microsoft 365) |
10 users × $15/mo = $150/month ($1,800/year)
Full message history, unlimited integrations, advanced admin controls. Just Slack — you still need separate tools for email, docs, storage.
10 users × $14/mo = $140/month ($1,680/year)
Teams + Word, Excel, PowerPoint, Outlook, 1 TB OneDrive per person. You get email, docs, spreadsheets, storage all included.
Different bundles: Ten Standard seats cost $1,680/year; ten Slack Business+ seats cost $1,800/year. These are not equivalent feature tiers.
The real question isn't price — it's whether you already use Microsoft 365 (in which case Teams is included) or prefer Slack's ecosystem and integrations. If you don't use Microsoft 365, Teams ends up cheaper due to bundling. If you're Slack-committed, Teams might feel expensive for the same chat-only cost.
Choose Slack if: You want best-in-class team chat. You rely on integrations (Zapier, GitHub, Salesforce, etc.). You already use non-Microsoft tools. You prefer a dedicated communication platform. You want the largest app ecosystem.
Choose Microsoft Teams if: You already use Microsoft 365 (Word, Excel, Outlook). Teams is included, so you get it free with your subscription. You need seamless Office app integration. You want email, chat, and docs in one ecosystem. You're in an enterprise locked into Microsoft.
Key insight: Compare selected bundles and existing licenses. Teams is included in qualifying with-Teams Microsoft licenses, but the license is not free. Slack covers messaging rather than the full Microsoft productivity suite.
Both tools have remained stable on pricing, but major SaaS platforms update fees regularly. Get instant alerts if either changes so you can plan your communication budget.
Set up price alerts — free View full pricing trackerAt current annual list prices, Business+ is $15 and M365 Standard with Teams is $14. Choose on messaging needs, desktop apps and existing licensing, not the old claim that prices are identical.
Slack Free: Unlimited channels, direct messages, 90 days message history, basic integrations. No time limit on calls.
Teams Free: Teams + limited calls (60 min per call), limited message search, limited meeting duration. More restrictions than Slack.
Slack, by a wide margin. Slack has 2,000+ integrations via Zapier and native apps. Teams has 500+ native integrations but fewer third-party options. If integrations matter to you, Slack wins.
Teams. Slack's native video calling is limited on the free tier. Teams offers full-featured video conferencing (up to 300 participants) across all tiers, matching Zoom quality.
Yes, some companies use both. Slack for community/culture, Teams for formal meetings + Office collaboration. But it adds cost and complexity. Most pick one for the entire organization.
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