Slack Pricing: A Complete Breakdown of Every Plan

This is an independent guide. Not affiliated with or endorsed by Slack Technologies, LLC or Salesforce, Inc.

You're trying to figure out what Slack actually costs, and the official pricing page raises more questions than it answers. What's included in the free plan? Is Pro enough, or do you need Business+? What happens when you add or remove users mid-cycle?

This guide walks through every Slack plan, explains what each tier includes, and helps you decide which one fits your team. We don't hardcode dollar amounts here because Slack adjusts its rates periodically. For current prices, always check slack.com/pricing.

If you're still figuring out what Slack is and whether your team needs it, start with our what is Slack guide first.

Slack Pricing Overview: All Four Tiers

Slack uses a per-user, per-month pricing model. The more people in your workspace, the higher your bill. Here's what each plan includes.

Free Slack's free tier is genuinely usable, not just a trial. You get channels, direct messages, and one-to-one huddles (audio and video calls). The main limits: only 90 days of searchable message history (messages older than one year are permanently deleted), a limited number of app integrations (check slack.com/pricing for the current cap), and no group huddles. For a team of five people working on a side project, this is often enough.

Pro Pro removes the biggest free-plan frustrations. You get unlimited message history, unlimited app integrations, group huddles with up to 50 participants and screen sharing, full Slack Connect for collaborating with external organizations, and custom user groups. Slack AI is included, giving you channel summaries, thread recaps, and AI-powered search. Most small-to-midsize teams land here.

Business+ Business+ adds enterprise-grade compliance and security on top of Pro. This includes SAML-based single sign-on (SSO), data exports for corporate compliance, guaranteed 24/7 support with a four-hour response time, and more granular admin controls. Companies in regulated industries or those with strict IT policies typically need this tier.

Enterprise+ Enterprise+ is built for large organizations that need multiple connected workspaces under one umbrella. It includes everything in Business+, plus unlimited workspaces, Enterprise Key Management (EKM) for custom encryption keys, HIPAA-compliant messaging, data residency controls, and dedicated support. Pricing is custom and requires contacting Slack's sales team.

For current per-user rates on each plan, check slack.com/pricing.

Slack Free Plan: What You Get and What's Limited

Slack's free plan isn't a stripped-down demo. It's a real product that many teams use long-term. But it has clear boundaries you should know about before committing.

What's included for free:

• Unlimited channels (public and private)
• Direct messages and group DMs
• One-to-one huddles with screen sharing
• Basic Workflow Builder for simple automations
• 90 days of searchable message history
• A limited number of third-party app integrations (check slack.com/pricing for the current cap)
• 5 GB of total file storage for the workspace

What's limited or missing:

• 90-day message history: Messages older than 90 days are hidden from search and browsing and eventually permanently deleted after one year. Messages still within the one-year window will reappear if you upgrade, but you can't access them on the free plan.
• No group huddles: Huddles are limited to one-on-one calls. If three people need to jump on a quick call together, you'll need a paid plan or a separate tool.
• Limited integration cap: You can only connect a limited number of apps (like Google Drive, Trello, or GitHub). Check slack.com/pricing for the current cap. Once you hit the limit, you have to remove one before adding another.
• Limited Slack Connect: You can send 1:1 direct messages to people outside your organization, but shared channels with external teams require a paid plan.
• No SSO or advanced admin controls: IT teams won't have centralized user management.

Rachel runs a five-person book club that uses Slack to coordinate reading schedules and share notes. The 90-day limit doesn't matter because their conversations are always about the current book. The free plan has worked for them for over two years without issues.

For a deeper comparison of features across plans, see our slack free vs paid breakdown.

Which Slack Plan Is Right for You?

Picking a plan comes down to team size, how much history you need, and whether your IT department has specific requirements.

Stick with Free if:

• Your team has fewer than 10 people
• You don't need to search messages older than 90 days
• You use fewer integrations than the free-plan cap allows
• You don't need group audio or video calls inside Slack

Upgrade to Pro if:

• You need unlimited message history (the number one reason teams upgrade)
• You want group huddles for quick team calls
• You work with clients or partners and need Slack Connect
• You need more app integrations than the free plan allows

Choose Business+ if:

• Your company requires SAML-based SSO
• You need data export capabilities for legal or compliance
• You want guaranteed 24/7 support with fast response times
• IT needs advanced user provisioning and de-provisioning

Go with Enterprise+ if:

• Your organization has multiple departments that each need their own workspace
• You operate in healthcare, finance, or government and need HIPAA compliance or FedRAMP authorization
• You require custom encryption key management
• You need data residency controls for specific regions

Tomas manages IT for a 150-person marketing agency. His team tried staying on the free plan, but designers kept losing access to asset links shared three months earlier. After the fifth time someone re-uploaded a file that already existed in a hidden conversation, Tomas made the case for Pro. The switch paid for itself in time saved within the first month.

For more on how Slack compares to alternatives, check our Slack vs Teams guide.

Slack for Nonprofits and Education

Slack offers discounted and sometimes free access for qualifying organizations.

Nonprofits: Eligible nonprofit organizations can apply for a discount on Slack's paid plans through slack.com/nonprofit. The discount typically applies to Pro and Business+ tiers. Eligibility requirements and discount amounts vary by region, so check the application page for current details.

Education: Slack provides special pricing for educational institutions through slack.com/education. Universities and schools can get discounted access for faculty, staff, and students. Some institutions qualify for free access on certain tiers.

Both programs require verification of your organization's status. The application process usually takes a few business days. If you're already on a paid plan, you can apply retroactively and receive credit for future billing cycles.

If you run a nonprofit and want to get your team started with Slack, our how to use Slack guide covers the basics of setting up channels, inviting members, and configuring notifications.

How Slack Billing Works

Slack's billing model has a few details that trip people up. Here's how it actually works.

Per-user pricing: You pay for each person who has an active account in your workspace. Guests (single-channel or multi-channel) may be billed differently depending on your plan. Deactivated users don't count toward your bill.

Annual vs. monthly billing: Slack offers both monthly and annual billing. Annual plans come with a significant discount compared to paying month-to-month. The trade-off: annual billing requires upfront payment for the full year. Most teams with stable headcount save money going annual.

Fair billing policy: Slack's "fair billing" policy means you're only charged for users who are actually active. If someone joins your workspace mid-cycle, you're charged a prorated amount for the remaining days. If someone is deactivated, you get a prorated credit on your next invoice. This prevents the common SaaS problem of paying for seats nobody uses.

Workspace owners and billing admins: Only workspace owners and designated billing admins can view invoices, change plans, or update payment methods. If you need access to billing, ask a workspace owner to grant you the billing admin role.

Currency and taxes: Slack bills in several currencies depending on your region. Taxes (like VAT or sales tax) are added on top of the listed per-user price and vary by location.

Slack is a trademark of Slack Technologies, LLC, a Salesforce company. This site is not affiliated with, endorsed by, or sponsored by Slack Technologies, LLC or Salesforce, Inc.