Vertex, Inc. is a

tax compliance software Tax compliance software is software that assists tax compliance, and may cover income tax An income tax is a tax imposed on individuals or entities (taxpayers) in respect of the income or profits earned by them (commonly called taxable income ...

and services company based in

King of Prussia, Pennsylvania King of Prussia (nicknamed K.O.P.) is a census-designated place in Upper Merion Township, Pennsylvania, Upper Merion Township in Montgomery County, Pennsylvania, United States. The community took its unusual name in the 18th century from a loca ...

, 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 Software companies of the United States