FreeTaxUSA is an online tax preparation website owned by TaxHawk.Founded in 2001 by a CPA and a team of professional software developers. FreeTaxUSA is one of the fastest growing tax websites online today.FreeTaxUSA is an online tax preparation website owned by TaxHawk.Founded in 2001 by a CPA and a team of professional software developers. FreeTaxUSA is one of the fastest growing tax websites online today.