Vertex Inc. /zigman2/quotes/219704171/composite VERX +2.37% said late Thursday it plans to go public after 40 years as a private company. The King of Prussia, Penn.-based tax software company said it plans to raise up to $100 million in the offering, although that amount is usually used as a placeholder and revised in later filings. Proceeds will be used to help pay down debt and for general corporate purposes, the company said. The company reported $173.8 million in debt as of March 31. The company reported $321.5 million in revenue and net income of $31.1 million in 2019, compared with $272.4 million in revenue and a loss of $67.1 million in 2018. Vertex plans to trade under the ticker "VERX" on the Nasdaq /zigman2/quotes/210598365/realtime COMP +2.13% . Goldman Sachs, Morgan Stanley, BofA Securities, Citigroup and Jefferies are listed among the underwriters.