SharePoint Storage Limit: How Much Space Per Tenant (2026)
SharePoint Online gives each Microsoft 365 tenant a 1 TB base pool plus 10 GB per licensed user added to that shared pool (figures as of 2026). Any single site collection can hold up to 25 TB, and admins can add more pooled storage by buying extra as needed. Here’s how the pooled model works and what happens when you run low.
The Limits at a Glance
Tenant pooled storage
- 1 TB base per organization
- +10 GB per licensed Microsoft 365 user (added to the shared pool)
- Example: 100 licensed users ≈ 1 TB + 1 TB = ~2 TB pooled
Per site collection
- Up to 25 TB each
Per-file
- Up to 250 GB per file uploaded to SharePoint or OneDrive
Add-on storage
- Admins can purchase additional pooled storage in blocks when the tenant runs low
What Counts Toward Your SharePoint Storage
Pooled storage covers everything stored in your SharePoint sites: documents, media, list attachments, page assets, and previous file versions. Version history is a common surprise — every retained version of a large file counts against the pool, so a heavily edited 100 MB deck can quietly consume several times its size.
OneDrive for Business is separate from the SharePoint pool. Each licensed user gets their own OneDrive quota (commonly 1 TB, adjustable toward 5 TB in the admin center), and that quota does not draw from the tenant’s shared SharePoint pool.
Note a 2026 caveat: Microsoft periodically adjusts default allocations and the per-user increment for new tenants. Check the SharePoint admin center’s Active sites and storage report for your tenant’s actual numbers rather than assuming the defaults.
What Happens When You Hit the Limit
When a site collection reaches its quota, users can’t upload or save new files to that site until space is freed or the site quota is raised. When the whole tenant pool is exhausted, uploads across sites fail. Admins get storage warnings in the admin center before the hard stop, and can either free space, redistribute per-site quotas, or buy add-on storage.
How to Free Up or Add Space
- Empty site and second-stage recycle bins — deleted files count against the pool for the full retention window (typically ~93 days) until purged.
- Trim version history — reduce the number of major versions retained on large document libraries.
- Archive stale sites — move inactive project sites to Microsoft 365 Archive or delete them.
- Delete large media — use the storage report to find the biggest libraries and files.
- Buy add-on pooled storage — the simplest fix when the tenant is legitimately full.
Troubleshooting
How much SharePoint storage does each Microsoft 365 tenant get?
A 1 TB base pool plus 10 GB per licensed user, added to the shared pool, as of 2026.
What is the maximum size of a single SharePoint site?
A site collection can hold up to 25 TB. Individual files can be up to 250 GB.
Is SharePoint storage the same as OneDrive storage?
No. OneDrive for Business is a separate per-user quota. SharePoint uses a shared tenant pool that all sites draw from.
Why is my SharePoint site full when the files are small?
Version history and recycle-bin contents both count. Retained versions of frequently edited files, plus deleted items awaiting purge, can consume far more than the visible files.
Can I get more SharePoint storage?
Yes — admins can purchase add-on pooled storage in blocks, or increase per-user OneDrive quotas separately in the admin center.
Quick Reference
| Scope | Limit |
|---|---|
| Tenant base pool | 1 TB |
| Per licensed user | +10 GB to pool |
| Per site collection | Up to 25 TB |
| Per file | Up to 250 GB |
| Add-on storage | Purchasable in blocks |
If managing files across SharePoint, email, and calendar eats your day, an AI assistant like Carly can organize attachments straight from your inbox — see how it works with SharePoint.
Related guides: OneDrive storage limit · OneDrive file size limit · Dropbox file size limit · Salesforce storage limit · Smartsheet row limit · Telegram file size limit · Telegram group limit
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