A doctoral degree will certainly only help you to become rich in an idealistic sense. The first contract for a PhD position should have a term of at least one year - after which, graduates are rewarded with their first salary increase.
It is only possible to understand higher education in the US in light of the intensified concentration of wealth in the country during the last thirty years.
In Austria, everyone who has their usual residence in the country is subject to tax. The country allows for generous benefits to scientists and researchers to attract people from these fields from outside the country to move to Austria to live and work. This article will help you have a greater understanding of the Austrian income tax system before you arrive.