Free
per user / month, free forever
Annual cost at 200 seats
€0
Communication & Support
Slack Pricing (October 2026)
List prices, licensing model, add-on modules and every price change we hold, compiled from Slack's own published pricing page.
- Last updated 29 October 2026
- Source: slack.com ↗
- Reviewed by a Najar expert*
Slack starts at per user / month, billed annually on Pro. It is licensed per user, not per usage, and there is a free plan: Free forever plan with 90 days of message history, up to 10 apps and Basic AI.. Monthly list rates are $8.75 (Pro) and $18 (Business+), so annual billing saves $1.50 and $3.00 per user a month. Enterprise+ is annual only.
Starting price
€6.51*per user / month, billed annuallyLicensing model
Per userUserFree tier
Yesno trial publishedSlack plans & pricing
List pricing published by Slack. Quote-only tiers are shown as such; we do not estimate them.
Pro
per user / month, billed annually
Annual cost at 200 seats
€15,624
Business+
per user / month, billed annually
Annual cost at 200 seats
€32,328
Enterprise+
per user / month, billed annually
Annual cost at 200 seats
€97,008
Slack plan comparison
What changes as you move up a tier, and what each step actually unlocks.
| Feature | Free | Pro | Business+ | Enterprise+ |
|---|---|---|---|---|
| List price | €0* | €6.51* | €13.47* | €40.42* |
| Billing period | — | Monthly or annual | Monthly or annual | Annual |
| Pricing model | Free | per user / month, billed annually | per user / month, billed annually | per user / month, billed annually |
| User limit | Unlimited | Unlimited | Unlimited | Unlimited |
| What it adds | Entry tier with 90 days of message history, up to 10 apps, one-to-one huddles and one-to-one external messaging through Slack Connect, plus Basic AI. | Adds unlimited message history and app integrations, group huddles, group external messaging with up to 250 organizations, thread and channel summaries, huddle notes and sign-in with Google (OAuth). | Adds the Slackbot personal AI agent, AI file summaries, daily recaps, AI search, workflow generation, SAML-based SSO, SCIM user management, the admin analytics API and data residency, plus CRM features such as lead and deal tracking, support email management and meeting prep. | Adds unlimited workspaces, enterprise search, multi-SAML, EMM integration, legal holds, audit logs, the Discovery API, HIPAA support and information barriers. Enterprise Key Management is a paid add-on. |
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Najar reviews your contracts against what comparable companies sign, finds the seats nobody uses, and renegotiates on your behalf.
Licensing model, how Slack invoices
The mechanics behind the sticker price: what you are actually charged for, and what triggers an increase.
True billing unit
User monthly or annual billing
Per user / month, billed annually
Model type
Per userPer user / month, billed annuallySeat increments
Single seatsNot publishedAnnual vs monthly
Discount publishedMonthly list rates are $8.75 (Pro) and $18 (Business+), so annual billing saves $1.50 and $3.00 per user a month. Enterprise+ is annual only.Guests & externals
Not publishedNot published- LicenceActive paid members
Billing is per paid member. Anyone who takes an action in Slack within a 28-day period counts as active, and paid members who stay inactive can receive a prorated credit for unused time.
- StructuralPlan tier
Business+ adds Slackbot and the full AI feature set, SCIM provisioning and SAML SSO. It costs $15 per user a month on annual billing, against $7.25 for Pro. Enterprise+ is listed at $45 per user a month on annual billing and adds the compliance, governance and admin controls.
- MeteredFlex Credits for Slackbot
Business+ includes Slackbot, but higher Slackbot message limits on invoice plans are sold as Flex Credits. Slack publishes no price for them, so they need to be priced through a sales conversation.
- Add-onEnterprise add-ons
Enterprise Key Management (Slack EKM), the Frontline teams module and Success Plan services are sold as add-ons with no published price, so they are added to an Enterprise+ quote.
- RenewalBilling cycle
Annual billing lowers the Pro and Business+ rate by $1.50 and $3.00 per user a month. Billing cycles can be changed at any time, and members added mid-cycle are charged a prorated amount for the rest of the period.
Slack products & modules
Sold separately from the base licence. Each one is its own line on the invoice.
| Module | What it adds | Price |
|---|---|---|
| Enterprise add-ons | Enterprise Key Management (Slack EKM), the Frontline teams module and Success Plan services are sold as add-ons with no published price, so they are added to an Enterprise+ quote. | Quote |
Slack price change history
Every list-price and packaging change we hold. This page snapshots published prices on each check, so changes accumulate here over time.
No changes recorded yet. The first check was 29 October 2026.
Slack pricing FAQ
How much does Slack cost?
Slack's Free plan is $0 and free forever. Pro costs $7.25 per user a month billed annually ($8.75 monthly), Business+ costs $15 per user a month billed annually ($18 monthly), and Enterprise+ is listed at $45 per user a month billed annually. All figures are in US dollars.
How does Slack charge?
Slack charges per user per month for each member on a paid plan. A member counts as active for billing if they take an action in Slack within any 28-day period. New members are billed a prorated amount for the rest of the billing period, and paid members who stay inactive can receive a prorated credit. Annual payers can be invoiced and pay by ACH or wire, and billing cycles can be changed at any time.
Does Slack have a free plan?
Yes. The Free plan is free forever and includes 90 days of message history, up to 10 apps, one-to-one huddles, one-to-one external messaging through Slack Connect and Basic AI. It is limited to one workspace. The pricing page does not describe a free trial of the paid plans. The 50% discount on the monthly Pro and Business+ rates applies for three months on eligible upgrades, and it does not apply to annual plans or Enterprise+.
What does Slack cost with add-ons?
Slack does not publish a price for an AI add-on, because Slackbot and AI features are included in Business+ and Enterprise+. Higher Slackbot message limits on invoice plans are sold as Flex Credits, and Enterprise Key Management, the Frontline teams module and Success Plan services are add-ons with no published price. Ask Slack sales to add them to a quote.
Slack alternatives & competitors
Priced like-for-like on the cheapest published paid tier.
| Vendor | Starts at | Licensing model | |
|---|---|---|---|
 Zendesk | €55 per agent / month, billed annually | Per agent / month, billed annually | Pricing → |
 Aircall | €26.95 per licence / month, billed annually | Per licence / month, billed annually, minimum 3 licences | Pricing → |
Is this page accurate?
Anonymous. Your answer tells us which pricing pages to re-check first.
Paying for Slack? See what you should actually be paying.
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* Prices marked * are converted from the vendor's published US list price at the ECB reference rate of Invalid Date, because Slack does not publish a EUR price. Converted figures are indicative: vendors set regional prices commercially, not by exchange rate, so your quote may differ.
Compiled by an automated agent from Slack's published pricing page on 29 October 2026, and reviewed by a Najar expert. Vendors change packaging without notice and regional pricing differs, so check the source before you budget or sign. Figures exclude tax. No affiliation with Slack.