Taxpayers who owe personal or business back taxes accrued before December 2013 have an upcoming opportunity to erase their debt with Kansas. The state is offering a tax amnesty program where the state will waive penalties and interest assessed by the state for unpaid taxes if the tax debt for an approved application is paid in full between Sept. 1 and Oct. 15, 2015. “The amnesty program allows taxpayers who have delinquent taxes to erase their debt without the added cost of the penalties and interest that might have been assessed,” said Revenue Secretary Nick Jordan.