For a timeshare, only mortgage interest and property taxes are
deductible.
To be deductible the loan must be
secured by the property.
Maintenance and other assessments are not deductible
To enter mortgage interest:
Type in mortgage
interest in the search box, top right of your screen, then
click the magnifying glass
Click the jump
to mortgage interest link in the search results
Follow to prompts and online instructions
To enter property tax deduction, enter those exact words in the search box per the above.