OpenTaxSolver (OTS) is a free program for calculating Tax Form entries and tax-owed or refund-due, such as Federal or State personal income taxes.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux


Open Tax Solver is the most popular Windows, Mac & Linux alternative to Good Calculators.
Open Tax Solver is the most popular Open Source & free alternative to Good Calculators.
- Open Tax Solver is Free and Open Source















