Open Core License
@dtax/tax-engine — AGPL-3.0
The @dtax/tax-engine npm package is licensed under GNU Affero General Public License v3.0.
You CAN
- Use it in personal projects for free
- Study and modify the source code
- Distribute modified versions (must remain AGPL-3.0)
- Use it internally without open-sourcing (internal use only)
You MUST (if distributing)
- Include the full AGPL-3.0 license text
- Open-source all modifications under AGPL-3.0
- Provide source code access to users of your service
You NEED a Commercial License if
- You build a SaaS product using the engine without open-sourcing it
- You want to keep your modifications proprietary
Commercial License
Contact [email protected] for commercial licensing options.
Web App & API
The dTax web application and REST API are proprietary software under the dTax Commercial License. They are not open source.