How much does Slack cost?
Slack has one free plan and three paid tiers
Short answer: Slack Free costs $0. Pro is $7.25 per active user per month billed annually, or $8.75 billed monthly. Business+ is $15 annually or $18 monthly. Enterprise+ is listed at $45 per user per month billed annually, and large contracts go through sales.
Compare the standard per-user rates first, then choose the billing schedule and plan that match your team’s needs.
Slack plans and pricing compared
Paid plans add history, AI and admin controls
| Plan | Billed annuallyper active user / month | Billed monthlyper active user / month | Best for | What you get |
|---|---|---|---|---|
| Free | $0 | $0 | Small teams trying Slack | 90-day message history, up to 10 apps, 1:1 huddles and 1:1 external messages only |
| Pro | $7.25 | $8.75 | Small and growing teams | Unlimited history and apps, group huddles, basic AI summaries, Google OAuth sign-in |
| Business+ | $15 | $18 | Teams that need admin, security and more AI | Adds SAML SSO, SCIM, data exports for all messages, Slackbot, AI search and recaps, 24/7 support with 4-hour first response |
| Enterprise+ | $45 | Large companies with compliance needs | Unlimited workspaces, enterprise search, legal holds, data residency, HIPAA support; contact sales |
Prices in USD per active user / month, standard list prices. Slack sometimes runs limited-time discounts (on Oct 22, 2026 the pricing page showed Pro monthly at $4.38 and Business+ monthly at $9 for 3 months). This page uses standard list prices.
Use Free to try Slack, Pro for full history and group collaboration, Business+ for more AI and administration, and Enterprise+ for company-wide compliance needs.
Is Slack free? What the Free plan includes
Free limits message history, integrations and group calls
- Message and file history limited to 90 days; data older than 1 year is deleted
- Up to 10 app integrations
- Huddles are 1:1 only
- Slack Connect is 1:1 external messages only
- 1 workspace
Free alternatives can help avoid a per-user bill
Teams that outgrow these limits but don't want a per-user bill can also look at free alternatives to Slack.
Slack pricing: annual vs monthly billing
Annual billing saves about 17%
Annual billing saves about 17% on both Pro ($1.50 less per user per month) and Business+ ($3 less). Monthly billing is more flexible while a team is still deciding.
How much Slack costs for a team of 10, 25 or 50
Total cost rises with active users and plan choice
| Team size | Pro, annualper year | Pro, monthlyper year | Business+, annualper year | Business+, monthlyper year | Enterprise+, annualper year |
|---|---|---|---|---|---|
| 10 users | $870 | $1,050 | $1,800 | $2,160 | $5,400 |
| 25 users | $2,175 | $2,625 | $4,500 | $5,400 | $13,500 |
| 50 users | $4,350 | $5,250 | $9,000 | $10,800 | $27,000 |
Based on list prices per active user / month. List price x team size x 12 months, assuming every member is active. Excludes taxes and discounts.
Estimate your budget from the plan’s standard rate, active team size and billing schedule; the table shows how those choices change the yearly total before taxes or discounts.
Which Slack plan should a team choose?
Choose a plan around history, AI and security needs
- Free
- Fewer than 10 people and history beyond 90 days doesn't matter.
- Pro
- Need full history, group calls or more than 10 apps.
- Business+
- Need SSO, SCIM, full exports or Slackbot.
- Enterprise+
- Multiple workspaces, legal holds, data residency or HIPAA.
Choose around the limits and controls your team actually needs: history and collaboration first, then AI, administration and compliance requirements.
Slack AI pricing and Slackbot access
Business+ adds more AI features and ongoing Slackbot access
Basic AI, such as conversation summaries, is included on Free and Pro. Business+ adds AI search, daily recaps, file summaries and AI workflow generation. Slackbot, Slack's personal AI agent, has ongoing access on Business+ and Enterprise+; Free and Pro users get a limited trial. Business+ customers on invoice plans can buy Flex Credits through Salesforce for higher Slackbot limits.
Choose based on the AI features you need: basic summaries are broadly available, while advanced AI and ongoing Slackbot access require Business+ or Enterprise+.
How Slack billing works per user
You pay for active members, with prorated adjustments
- Only active members are billed: anyone who takes an action in Slack within a 28-day period
- If a paid member goes inactive, Slack adds a prorated credit
- New members are charged a prorated amount for the rest of the billing period
- Credit card for any plan; annual plans may be invoiced and paid by ACH or wire
- Discounts available for qualified nonprofits and educational institutions
Budget around active members and prorated changes, then check the payment options and any discounts that apply to your team.
Slack pricing FAQ
Is Slack free?
Yes, Slack has a free plan at $0 forever. It keeps 90 days of message history, allows up to 10 apps, and limits huddles and external messages to 1:1.
How much does Slack cost per user?
Pro is $7.25 per active user per month billed annually or $8.75 monthly. Business+ is $15 annually or $18 monthly. Enterprise+ is listed at $45 per user per month billed annually.
How much does Slack cost for a team of 10?
On Pro, about $870 a year billed annually or $1,050 billed monthly. On Business+, $1,800 a year annually or $2,160 monthly.
What's the difference between Slack free and paid?
Paid plans remove the 90-day history limit and the 10-app cap, and allow group huddles and group external messages. Business+ and up add security and admin features like SAML SSO and SCIM.
Does Slack charge for inactive users?
No. Slack bills only members who were active in the last 28 days and credits unused time when someone becomes inactive.
Does Slack offer nonprofit pricing?
Yes. Slack offers discounts for qualified nonprofit organizations and educational institutions.
Is Slack AI included?
Basic AI summaries are included on all plans. Advanced AI features and ongoing Slackbot access come with Business+ and Enterprise+.