How much of senior care expenses are deductible?

[AmyT]

The senior care facility should provide you with a breakdown of what part of her monthly cost is for medical care - this portion will be deductible as a medical expense.

These can be entered as a medical expense on Schedule A (Itemized Deductions).  Medical expenses are subject to a 10% of AGI floor (7.5% floor if you were born before January 2,1952).

More information on medical expenses can be found in this IRS publication:  https://www.irs.gov/pub/irs-pdf/p502.pdf