Numeral
8.2#5 in tax compliance software$75 one-timeFree planWebAPI
VisitNumeral vs OpenSalesTax
OpenSalesTax
7.4#3 in tax engine softwareFree planFree planWebAPILinuxmacOS
VisitWhat both publish
| Fact | Numeral | OpenSalesTax |
|---|---|---|
| API access | Yes | Authentication defaults to open access with per-IP rate limiting, while an API-key mode requires an X-API-Key header and supports per-key rate limits and usage tracking. |
Numeral plans
- Professional registration$150, paid once
- MonitoringFree
- Professional$75, paid once
- EnterprisePriced on request
OpenSalesTax plans
- Free / open sourceFree
- Free self-hosted engineFree
Pick Numeral if…
Numeral suits businesses that need sales tax, VAT, or GST calculation, registration, and return filing. The free monitoring plan may suit businesses tracking where tax obligations could arise.
Pick OpenSalesTax if…
OpenSalesTax suits developers or organizations building US transaction tax calculations who can self-host an API. Users should be prepared to verify calculations with the relevant state Department of Revenue before remitting.