A Bridging visa B (BVB) is a temporary visa. It allows you to leave and return to Australia while your application for a substantive visa is being processed. Provided you return to Australia within the specified travel period, a BVB will then allow you to stay in Australia while your substantive visa application is being processed. You can hold a substantive visa and a BVB at the same time.
BVB either does not allow you to work in Australia, or there are work restrictions, but you believe you have a compelling need to work. We might ask you to provide evidence that you are in financial hardship
BVC allows you to remain lawfully in Australia until a decision is made on your substantive visa application.
You must comply with any conditions on your BVC when it is in effect.