You can also claim parents, Stepparents, grandparents
and certain individuals who are related to you by marriage as dependents.
The law also says that people who care for children
but do not have Parental Responsibility, e.g. Stepparents, other relatives or
foster parents should take sensible everyday decisions for their best welfare.
If you provide half the financial support for a parent or grandparent, Stepparent, aunt or uncle,
niece or nephew, in-laws, or someone who lives in your home all year long, you may be able to qualify for this $500 credit, as long as the dependent doesn't earn more than $4,150(2019).