Vacation home. Mortgage interest on your second home is deductible, just as it is for your principal residence. Property taxes can be deducted on any number of homes. If you rent the place for 14 or fewer days during the year, the rental income is tax-free to you. If you rent it for more than 14 days a year, you must report the income, but also may claim deductions for rental expenses.

From Kiplinger.com

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