I am not a teacher.
Your thread title says "take care of it" and then you forgot the word "care" all four of the times that you should have used it in the actual question. "We will take of it" doesn't mean anything.
Anyway, the answer, is it depends. What are the circumstances?
We will take care of it could mean we will do it at no cost to you/we will pay for it/there is no charge.
It could also mean we will deal with it/look after it/do it for you and so on, with or without charge.
Student or Learner