Slack runs one of the more generous nonprofit programs in the SaaS world: eligible charities can get the Pro plan free or take 85% off paid plans. For a registered nonprofit, that turns Slack from a recurring line item into something close to free — if you qualify and apply correctly.
This guide explains exactly what the Slack for Nonprofits discount includes in 2026, who’s eligible, and how to claim it.
What the Nonprofit Discount Includes
| Workspace size | Pro plan | Business+ plan |
|---|---|---|
| 250 members or fewer | Free upgrade | 85% off |
| More than 250 members | 85% off | 85% off |
The headline benefit is the free Pro upgrade for workspaces with 250 or fewer members — which covers the vast majority of nonprofits. Larger organizations, or those that need Business+ features (advanced compliance, SAML SSO, data exports), get a flat 85% discount instead.
For context on what those plans normally cost, see the full Slack pricing breakdown — Pro lists around $7.25/user/month, so a free upgrade is real money for a 40-person nonprofit.
What You Actually Get on the Free Pro Plan
The nonprofit Pro upgrade unlocks the same features as paid Pro:
- Unlimited message history (the free plan hides messages older than 90 days)
- Unlimited apps and integrations
- Group audio and video huddles
- Workflow Builder for automating routine processes
That message-history unlock alone is the single biggest reason nonprofits apply — the free tier’s 90-day limit makes Slack nearly unusable as an institutional record.
Eligibility Requirements
To qualify, your organization must hold valid charitable status with one of:
- The IRS (501(c)(3) in the United States)
- A local tax authority or charity commission
- A recognized TechSoup Global partner
Not eligible: schools, colleges, hospitals, health-insurance providers, private grant-making foundations, and any organization that discriminates based on protected characteristics. Schools and universities should instead look at education-specific programs from other vendors.
How to Apply
- A Workspace Owner submits the Slack for Nonprofits application form.
- Slack routes verification through Goodstack/TechSoup, which validates your charitable status.
- Once approved, the discount applies to your existing workspace — you don’t need to migrate.
Approval typically takes a few business days. If you’re already paying for Slack, contact support after approval to apply the discount or refund to your billing.
Is It Worth Switching to Slack?
If your nonprofit already uses Slack, applying is a no-brainer — there’s no downside to a free Pro upgrade. If you’re choosing a communication tool, the nonprofit discount makes Slack extremely competitive against alternatives. Just weigh it against bundled options: a tool like Microsoft Teams through its nonprofit program comes packaged with email and Office apps, which may matter more than chat alone.
Verdict
For a registered charity under 250 members, Slack for Nonprofits is effectively free Pro — unlimited history, huddles, and integrations at no cost. The only friction is the eligibility check, and schools/hospitals are excluded. If you qualify, apply before paying for another month.
Compare the standard tiers in our Slack free vs paid guide, and if you also need video-first tools, see the Zoom nonprofit discount.
Frequently Asked Questions
Is Slack completely free for nonprofits? For workspaces with 250 or fewer members, the Pro plan is a free upgrade. Larger workspaces and Business+ get 85% off rather than free.
Are schools eligible for the Slack nonprofit discount? No. Schools, colleges, and hospitals are explicitly excluded. Educational institutions should look at education-specific licensing instead.
How long does the nonprofit discount last? It applies on an ongoing basis as long as your organization maintains valid charitable status and re-verifies when asked.
Can I get a refund if I already paid? Contact Slack support after your nonprofit application is approved; they can apply the discount to your billing going forward.