The tuition fees charged depend on the parents' tax residence rather than on student's nationality:
Sciences Po calculates fees based on the available income of the household from 2 years before. However, a number of events can occur during these two years and have an impact on family incomes. Certain circumstances are taken into account by Sciences Po and allow for a revision of the amount of tuition fees. These circumstances are: retirement, unemployment, illness, divorce, and death of a parent.
In these cases, students must still provide the tax statement from 2 years previous and all family's overall income, as would any other student. In addition, students must also provide documents enabling Sciences Po to consider the new situation and current parental incomes.