Taking care of an elderly parent or grandparent may provide more than just personal satisfaction. You could also be eligible for tax breaks. Here’s a rundown of some of them. Medical expenses. If the individual qualifies as your “medical dependent,” and you itemize deductions on your tax return, you can include any medical expenses you incur for the individual along with your own when determining your medical deduction. The test for determining whether an individual qualifies as your “medical dependent” is less stringent than that used to determine whether an individual is your “dependent,” which is discussed below. In general, an individual qualifies as a medical dependent if you provide over 50% of his or her support, including medical costs. However, bear in mind that...