You may be able to claim the amount for an eligible dependant  if at any time in the year you met all of the following conditions at once:

• You did not have a spouse or common-law partner or, if you did, you were not living with, supporting, or being supported by that person.
• You supported a dependant in 2016.
• You lived with the dependant (in most cases in Canada) in a home you maintained. You cannot claim this amount for a person who was only visiting you.

In addition, at the time you met the above conditions, the dependant must also have been either:

• your parent or grandparent by blood, marriage, common-law partnership, or adoption; or
• your child, grandchild, brother, or sister, by blood, marriage, common-law partnership, or adoption and under 18 years of age or had an impairment in physical or mental functions.