Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from ANU, Canberra. He has written and translated several Islamic texts and also prepared educational videos on Islamic rulings and practices.
Khums is to be paid when your khums day comes, and you have savings, irrespective of whether this comes from work or from support allowance, as long as it belongs to you.
And Allah knows best.