How Much Does Slack Pro Cost in the UK?
Slack Pro costs £6.67 per user per month (billed annually) or £8.25 per user per month (billed monthly). The free tier covers basic messaging with a 90-day message history limit. According to Salesforce (Slack's parent company), Slack has over 65 million daily active users globally with the UK being its second-largest market.
| Plan | Monthly/User (Annual) | Monthly/User (Monthly) | Features |
|---|---|---|---|
| Free | £0 | £0 | 90-day history, 10 integrations, 1:1 calls |
| Pro | £6.67 | £8.25 | Full history, unlimited integrations, group calls, Canvases |
| Business+ | £11.67 | £14.10 | Pro + SAML SSO, compliance, data exports |
| Enterprise Grid | Custom | Custom | Business+ + unlimited workspaces, HIPAA |
For individuals and small teams, Slack Pro is typically the relevant tier. Annual billing saves roughly 20% compared to monthly. The free tier's 90-day message limit means older conversations become inaccessible — a significant limitation for teams relying on Slack as their knowledge base.
Compare all options on our UK Productivity subscriptions page.
Does Slack Auto-Renew?
Yes, Slack Pro auto-renews monthly or annually. The workspace owner's payment method is charged automatically. Slack sends invoices by email. Check your plan under Workspace Settings > Billing.
According to a 2025 Gartner report, 68% of UK businesses with 10-50 employees use Slack or a similar messaging platform. The per-user pricing means costs scale with team size.
How to Cancel Slack Pro in the UK
Cancelling Slack Pro downgrades your workspace to the free tier. Only workspace owners/admins can cancel.
Step-by-step cancellation
- Sign in as a workspace owner/admin
- Go to Settings & Administration > Workspace Settings > Billing
- Select Change Plan > Downgrade to Free
- Confirm downgrade
Messages beyond 90 days become inaccessible (not deleted) on the free tier. If you upgrade again later, your full history returns.
See also our guides to Notion UK subscription and Microsoft 365 UK subscription.
Is Slack Pro Worth It in 2026?
Slack Pro is essential for teams that rely on messaging for daily work. The 90-day limit on the free tier makes it impractical for any team that needs to reference past conversations. At £6.67/user/month, it is competitively priced against Microsoft Teams (included with Microsoft 365).
| Pros | Cons |
|---|---|
| Best-in-class messaging UX | Per-user pricing adds up for larger teams |
| Unlimited message history on Pro | Microsoft Teams is free with Microsoft 365 |
| 2,600+ app integrations | Can be distracting with constant notifications |
| Huddles for quick voice/video calls | No built-in document editing (unlike Teams) |
| Canvases for collaborative documents | Free tier's 90-day limit is very restrictive |
Microsoft 365 at £5.99/month includes Teams messaging alongside Office apps — potentially better value. Slack's advantage is its superior user experience and integration ecosystem. Most teams choose one or the other based on their existing tool stack.
Track Your Slack Subscription with Prunely
Prunely lets you add your Slack Pro subscription to track billing. Set reminders before annual renewals. Track alongside all your subscriptions — no bank connection needed. Prunely is free for up to 5 subscriptions.
Frequently Asked Questions
How much does Slack Pro cost per month?
Slack Pro costs £6.67/user/month (annual) or £8.25/user/month (monthly). For a team of 5, that is £33.35-41.25/month. Annual billing saves approximately 20%.
Is Slack free?
Yes. Slack's free tier includes basic messaging, 90-day message history, 10 app integrations, and 1:1 voice/video calls. It works for small teams or personal use but the history limit is a significant constraint.
What is the Slack free plan message limit?
The free plan retains 90 days of message history. Messages older than 90 days become inaccessible (but are not deleted). Upgrading to Pro restores access to your full message history retroactively.
How do I cancel Slack Pro?
Only workspace owners can cancel. Go to Settings > Workspace Settings > Billing > Change Plan > Downgrade. Messages beyond 90 days become inaccessible. Use Prunely to set a reminder before annual renewal.
Is Slack better than Microsoft Teams?
Slack has a better user experience and larger integration ecosystem. Teams is included with Microsoft 365 and integrates natively with Office apps. Choose Slack for a standalone messaging tool, Teams if your organisation uses Microsoft 365.