No tienes por que hacerte cargo de eso.

[CEShannvfb]

English Translation

You won’t have to take charge of that.

What is the purpose of por in this circumstance? What is the distinction between this and simply “No tienes que hacerte cargo de eso”?

[morbrorper]

I would say it should be “por qué”.

Tener que y Tener porque | WordReference Forums.