Focus on the pronunciation of overtax
English definition of “overtax”
/ˌəʊvəˈtæks/ verb [T]
› TAX to demand too much tax from someone or to put too much tax on goods: "We overtax the poor," the Senator claimed. Food and clothing should not be overtaxed.
› to make people, a system, a machine, etc. do more than they can do: Filling so many jobs at once would overtax the department.