You will have to Vs Have to?

Question

I have come across this, in a recent conversation with an educationalist.During our conversation regarding higher education; He said, "you will have to do that".Is it the right phrase? What is the difference between these two statements?1. You will have to do that 2. You have to do that (simply)Any specific context, when one must be using each one of those.

Answer 1

"Have to" is a phrasal verb meaning obligated. For example: You have to be 18 years old to vote.

"Will have to" refers to a future obligation. For example: When you are 18 years old, you will have to register to vote.