# Can I use BUSL 1.1 commercially?

**Short answer:** Commercial use: Needs review. Commercial use, modified and redistributed: Needs review.

Business Source License 1.1 (BUSL-1.1): Copy, modify and redistribute the software for any purpose other than production use; production use is allowed only as the licensor's Additional Use Grant says. Each version converts to an open source Change License on its Change Date.

## Commercial use — Needs review

License: [Business Source License 1.1](https://mariadb.com/bsl11/) (`BUSL-1.1`, curated)

- Production use depends on the Additional Use Grant this licensor wrote into its copy of the license, which differs from project to project. A reviewer should read that grant.

Duties: license_notice, keep_change_terms
## Commercial use, modified and redistributed — Needs review

License: [Business Source License 1.1](https://mariadb.com/bsl11/) (`BUSL-1.1`, curated)

- Production use depends on the Additional Use Grant this licensor wrote into its copy of the license, which differs from project to project. A reviewer should read that grant.

Duties: license_notice, keep_change_terms

## Context
- After the Change Date the version is available under the Change License the licensor named (often GPL-2.0-or-later or Apache-2.0).
- Not an open source license until the Change Date.

## Sources
- [Business Source License 1.1: official text](https://mariadb.com/bsl11/)
- [BUSL-1.1 on the SPDX License List](https://spdx.org/licenses/BUSL-1.1.html)

## Check it yourself (free, no key)
```json
{
  "tool": "check_license",
  "arguments": {
    "license": "BUSL-1.1",
    "intended_use": {
      "commercial_use": true
    }
  }
}
```
REST: POST https://www.rightshold.com/v1/licenses/check

_Computed from Rightshold's license profiles; not legal advice. Updated 2026-10-19. JSON: https://www.rightshold.com/answers/can-i-use-busl-1-1-commercially.json_