Many people have contributed to Tax-Calculator and we hope the number of contributors will continue to grow.
Tax-Calculator is a descendant of TAXCALC and Internet TAXSIM version 9, programs written by Dan Feenberg and Inna Shapiro, and hosted at NBER. The code translation into Python concluded with the first addition to the Tax-Calculator GitHub source-code repository on July 29, 2014.
The Tax-Calculator repository contains a contributor list containing everyone who has developed code that has been committed to the repository since the first commit on July 29, 2014.