Slack pricing

Plan prices and the plan grid checked Oct 30, 2026 on slack.com/pricing, with US-dollar Pro and Business+ prices confirmed on Slack’s Pro and Business+ plan pages. Free-plan limits, AI features by plan, the Fair Billing Policy and nonprofit discounts checked the same day in Slack’s Help Center. USD, per active user. No affiliate links on this page (how we work).

What you’ll actually pay

Slack Free is $0, with 90 days of message history. Above that you pay per active user. Pro is $7.25 a month billed yearly, or $8.75 billed monthly. Business+ is $15 a month billed yearly, or $18 monthly. Enterprise+ is listed at $45 per user a month on annual billing, sold through sales (all checked Oct 30, 2026).

Two things make Slack cheaper than the sticker suggests. You’re only billed for people who actually use it, thanks to the Fair Billing Policy below. And nonprofits can get Pro free. Two things make it pricier: Slack’s best AI features sit on Business+ and up, and Business+ went up in 2025. Slack’s June 2025 announcement moved it to $15 from $12.50 on annual billing, and to $18 from $15 on monthly.

Plan	Monthly	Yearly	Per user
Free	$0	$0	$0
Pro	$8.75	$7.25/mo	Active user
Business+	$18	$15/mo	Active user
Enterprise+	Sales	$45/mo	Per user

Source: slack.com/pricing, Slack Pro and Slack Business+, verified Oct 30, 2026. “Yearly” is the per-month rate when billed annually.

Heads-up: on Oct 30, 2026, Slack’s US pricing page was also showing a discounted Pro price on monthly billing, with no end date shown. Promos come and go, so check the price at checkout. The rates above are Slack’s standard list prices.

Free plan limits

Slack Free is fine for a tiny team that doesn’t need its history. Here’s what Slack’s Help Center says you give up (verified Oct 30, 2026):

• 90 days of history. You see only the most recent 90 days of messages and files. Upgrading brings the hidden history back, but only up to a point.
• Data older than a year is deleted. Slack’s pricing grid says “Free Slack deletes data after 1 year.” That’s Tony’s ducks leaving the pool in The Sopranos: once they’re gone, they’re gone.
• 10 apps. Free is “limited to 10 third-party or custom app installations.”
• 1:1 huddles only. Group huddles need a paid plan.
• 1:1 Slack Connect only. Shared channels with other companies need a paid plan.
• No guests, no Workflow Builder, no lists. Canvases work in channels and DMs only.
• No Slack AI. Summaries and huddle notes start on Pro.

Yearly vs monthly: the real discount

Per user, per year:

• Pro: $8.75 × 12 = $105 monthly vs $7.25 × 12 = $87 yearly. You save $18 per user per year, about 17%.
• Business+: $18 × 12 = $216 monthly vs $15 × 12 = $180 yearly. You save $36 per user per year, about 17%.

For a 20-person team on Business+, that’s $720 a year for committing up front.

Now the good part. Under Slack’s Fair Billing Policy, you pay only for active members. Anyone who “hasn’t used Slack in over 28 days” stops counting, and you get a prorated credit for them. Slack’s own example: a $8.75 Pro member inactive for 20 days of a 30-day month earns ($8.75 ÷ 30) × 20 = $5.83 back. Owners, admins, full members and multi-channel guests are billed. Single-channel guests and bots are free. The policy covers plans bought on Slack’s website by card or self-serve invoicing. Credits don’t get refunded and they expire when your paid plan ends. It’s one of the few genuinely customer-friendly pricing rules in SaaS, and I’m a little sad more companies don’t copy it.

AI by plan

Slack’s plans page (verified Oct 30, 2026) splits AI like this:

• Pro: conversation summaries and huddle notes.
• Business+: adds recaps, file summaries, translations, workflow generation, AI steps in Workflow Builder, search answers and Slackbot.
• Enterprise+: adds enterprise search across connected tools.

Slack’s pricing FAQ says Free and Pro get “a limited trial experience” of Slackbot, while ongoing access is for Business+ and Enterprise+. So if your boss bought Pro for “Slack AI”, that’s summaries, not the assistant. Business+ also brings SAML-based SSO (Pro is “OAuth with Google”), full message exports and 24/7 support with a four-hour response. Enterprise+ is the compliance tier, with data loss prevention, legal holds and audit logs, at $45 a user. That’s what the money is for, as Don Draper would say.

Nonprofits and small teams

Slack’s nonprofit program (verified Oct 30, 2026) is unusually generous. Pro is free for nonprofit workspaces with 250 or fewer members, with 85% off above that. Business+ is 85% off at any size. Enterprise is available for nonprofits with 1,000+ members by contacting Slack. Eligibility is checked through TechSoup. Education has its own separate program.

For a small business, the honest math: if you need history beyond 90 days, guests or group huddles, Pro at $7.25 a user a month, billed yearly, is the floor. Business+ only earns its premium if you’ll use SAML SSO, exports or the Business+ AI features.

Comparing your stack? See Notion pricing, Zapier pricing, Linear pricing, Airtable pricing and all pricing trackers.

FAQ

How much is Slack per user? Pro is $7.25 per active user per month billed yearly or $8.75 monthly; Business+ is $15 yearly or $18 monthly; Enterprise+ is listed at $45 per user per month on annual billing.

Is Slack free? Yes, Slack Free costs $0 but shows only the last 90 days of messages and files, deletes data older than one year, and allows 10 apps and 1:1 huddles only.

Does Slack have nonprofit pricing? Yes, Pro is free for nonprofit workspaces with 250 or fewer members and 85% off above that, and Business+ is 85% off at any size.

What is the best Slack plan for a small business? Pro at $7.25 per user per month billed yearly covers unlimited history, group huddles and guests; move to Business+ only for SAML SSO, full exports or the bigger AI features.

Do I pay for inactive Slack users? No, under Slack’s Fair Billing Policy members inactive for over 28 days aren’t billed and you get a prorated credit.

Sources

1. Slack pricing (Free limits, Enterprise+ $45 annual, plan grid, SSO, Slackbot FAQ, fair billing FAQ): https://slack.com/pricing (verified 2026-10-30)
2. Slack Pro plan page (US$7.25 yearly, US$8.75 monthly): https://slack.com/intl/en-au/pricing/pro (verified 2026-10-30)
3. Slack Business+ plan page (US$15 yearly, US$18 monthly, 24/7 support): https://slack.com/intl/en-au/pricing/businessplus (verified 2026-10-30)
4. Slack June 2025 pricing announcement (Business+ increase): https://slack.com/blog/news/june-2025-pricing-and-packaging-announcement (verified 2026-10-30)
5. Feature limitations on the free version of Slack: https://slack.com/help/articles/27204752526611-Feature-limitations-on-the-free-version-of-Slack (verified 2026-10-30)
6. Slack plans and features (AI by plan, exports, compliance): https://slack.com/help/articles/115003205446-Slack-plans-and-features- (verified 2026-10-30)
7. Slack’s Fair Billing Policy: https://slack.com/help/articles/218915077-Slack-s-fair-billing-policy (verified 2026-10-30)
8. Apply for the Slack for Nonprofits discount: https://slack.com/help/articles/204368833-Apply-for-the-Slack-for-Nonprofits-discount (verified 2026-10-30)