@MissMCJ - where did you see 10% - can you please send us the link so we can all share as these questions come up?
please review line 3 of the link below
https://www.irs.gov/pub/irs-pdf/f1040sa.pdf
thx
For example: If you are under the age of 65, you can only deduct total medical expenses to the extent your expenses exceed 10% of your adjusted gross income for the tax year. Any medical deduction over that threshold would not be applied.
