Vertex, Incorporated is a

tax compliance software Tax compliance software is software that assists tax compliance, and may cover income tax, corporate tax, VAT, service tax, customs, sales tax, use tax, or other taxes its users may be required to pay. The software automatically calculates a user ...

and services company based in

King of Prussia, Pennsylvania King of Prussia (also referred to as KOP) is a census-designated place in Upper Merion Township in Montgomery County, Pennsylvania, United States. As of the 2020 census, its population was 22,028. The community took its unusual name in the 18th ...

, USA. Vertex was founded in 1978 by Ray Westphal. Jeff Westphal, Stevie Westphal Thompson and Amanda Westphal Radcliffe purchased interest in the company from their father in 2000. On July 29, 2020, the company went public on the Nasdaq stock exchange.

References

{{Authority control Companies based in Montgomery County, Pennsylvania American companies established in 1978 Companies listed on the Nasdaq