The Mortgage Interest Deduction is available to homeowners for up to $1,000,000 of acquisition debt on the combination of their first and second home. They can also deduct interest on up to an additional $100,000 of Home Equity debt.

While Acquisition Debt is used to buy, build or improve a principal residence, the Home Equity Debt can be used for any purpose. It can be used for educational or medical expenses, to purchase a personal car or boat, consolidate debts or pay off credit cards.

A homeowner with $15,000 of credit card debt at 19% and sufficient equity in their home could replace it with a home equity loan at much lower interest rate. Not only would the interest rate on the home equity loan be about 1/3 of the rate paid on the credit card, it’s would now be tax deductible.

If the taxpayer was in the 28% bracket, the net interest on a 6.5% loan would be 4.68% after tax benefits are considered.
Shifting personal debt to Home Equity debt can result in an interest deduction and probably, a lower interest rate. For more information see IRS Publication 936 page 10 and consult your tax professional.