Unless you have begun construction of a home on the bare land that you can occupy within 24 months the interest you paid on the second mortgage would not qualify as deductible mortgage interest. . For more information, refer to Publication 936, Home Mortgage Interest Deduction.

You may deduct home equity debt interest, as an itemized deduction, if you are legally liable to pay the interest, pay the interest in the tax year, secure the debt with your home, and do not exceed certain limitations. For more information, refer to Publication 936, Home Mortgage Interest Deduction; and Tax Topic 505, Interest Expense.

A loan taken out for reasons other than to buy, build, or substantially improve your home, such as to pay off personal debts may qualify as home equity debt. The interest would be deducted on Form 1040, Schedule A (PDF), Itemized Deductions. The amount you can deduct as interest on home equity debt is subject to certain limitations. For more information, refer to Publication 936, Home Mortgage Interest Deduction; and Tax Topic 505, Interest Expense.

The mortgage interest on a second home which you use as a residence for some portion of the taxable year, is generally deductible if the interest satisfies the same requirements for deductibility as interest on a primary residence. Real estate taxes paid on your primary and second residence are, generally, deductible. Deductible real estate taxes include any state, local, or foreign taxes on real property levied for the general public welfare. Deductible real estate taxes do not include taxes charged for local benefits and improvements that increase the value of the property. For more information, refer to Publication 17, Your Federal Income Tax for Individuals, Chapter 24; Tax Topic 503, Deductible Taxes; and Publication 530, Tax Information for First-Time Home Owners.

No, you don't divide the points by 30. If you choose to use the straight-line method, you need to divide the points by the number of payments over the term of the loan and deduct points for a year according to the number of payments made in the year. If the loan ends prematurely, due to payoff or refinance with a different lender, for example, then the remaining points are deducted in that year. Points not included in Form 1098 (PDF) (usually not included on a refinance) should be entered on Form 1040, Schedule A (PDF), Itemized Deductions. For more information, refer to Publication 936, Home Mortgage Interest Deduction; and Tax Topic 504, Home Mortgage Points.

References:

• Publication 936, Home Mortgage Interest Deduction
• Tax Topic 504, Home Mortgage Points
• Form 1040, Schedule A (PDF), Itemized Deductions