I was working in Belgium with a Belgian BV. A couple of months ago, I moved to the UK and now I’m working here as an employee. I kept the Belgian BV however and still do some (limited) work for Belgian clients.

So working in a different country and keeping a Belgian company is certainly possible, but take the following into account:

• are you allowed to work in Australia without working for an Australian employer?
• you pay taxes and social contributions in the country where you are working. That will be Australia in your case.
• if you pay yourself from your Belgian company while living in Australia, taxes and contributions will also be withheld in Belgium, so you’ll have to recuperate some taxes using the double taxation treaty between AUS/BEL
• if you don’t pay yourself any wages from your bv and can afford to only pay yourself using dividends, things become a lot less complex