When there's a decision to be made, there are expressions that affirm who does and doesn't have the right to make that decision. The examples for your decision and not your decision are listed below.
CEO: The company lost a lot of money last year. Should we fire 1,000 employees to recover the losses?
Answer
a. It's your decision.
b. It's your call.
c. It's up to you.
Cleaning Lady: I think the company should get a large bank loan and focus on our next product line.
Answer
a. It's not your decision.
b. It's not up to you.
c. You're overstepping your bounds.
d. You don't have the authority to make that decision.
CEO: The company lost a lot of money last year. Should we fire 1,000 employees to recover the losses?
Answer
a. It's your decision.
b. It's your call.
c. It's up to you.
Cleaning Lady: I think the company should get a large bank loan and focus on our next product line.
Answer
a. It's not your decision.
b. It's not up to you.
c. You're overstepping your bounds.
d. You don't have the authority to make that decision.