1 - IRS Guidelines: How Many Days Are You Using the Home for "Personal Use"? In order to deduct the mortgage interest on your vacation home as "qualified home mortgage interest", you need to use the vacation home for your own "personal use" for the greater of: 14 Days per Year; or 10% of the number of days that you rent it out for fair market value For example, if you rent out the home for 100 days per year, you'd need to live there for at least 14 days per … (1 comments)
Two Things to Consider When Renting Out Your Vacation Home 
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