You may be able to deduct the property taxes on vacant land held for investment, but you must itemize personal deductions to do so. These taxes are not subject to the limitation on state and local taxes, which include real estate taxes on personal use property (e.g., your personal residence). Note: Different rules apply to individuals who are dealers in property.
Fully deductible interest on up to two residences if acquisition debt secured by a home is $1 million or less, and home equity debt is $100,000 or less.