Pricing
OpenSalesTax pricing
As github.com lists them, read 4 Oct 2026. The maker's own page has the final word.
| Plan | Billed and limits | Price |
|---|---|---|
| Free / open source | Apache 2.0 · self-hostable · US sales tax calculation API | Free |
| Free self-hosted engine | Docker or source deployment · REST API · hosting and maintenance are your responsibility | Free |
From github.com, wiserreview.com.