Is personal loan interest tax deductible?

The general rule: Consumer personal loan interest has not been deductible since the Tax Reform Act of 1986 eliminated the consumer interest deduction. This applies to: personal loans used for debt consolidation, medical expenses, vacations, weddings, appliances, vehicles purchased personally, and most other personal uses.

Exceptions where personal loan interest IS deductible: Business use: if you take a personal loan and use the proceeds to fund business operations or equipment (and you are a sole proprietor, partnership, or LLC), the interest is deductible as a business expense on Schedule C. The key is the use of funds, not the type of loan. Investment use: personal loan proceeds invested in taxable accounts (stocks, mutual funds) allow deduction of interest as an investment interest expense, limited to net investment income. Student loan interest: while student loans are a distinct product, borrowers sometimes use personal loans for education - these are not eligible for the student loan interest deduction (which is specific to qualified student loans). Home equity exception: if your personal loan is secured by your home and used for home improvement, it may be treated like a home equity loan and the interest may be deductible (up to the applicable limit under current law). Verify this with your tax professional - the loan must be secured by the home, not just used for home improvement.

Practical implication: For most borrowers, there is no tax benefit to personal loan interest. This should factor into the comparison of personal loans vs. alternatives with deductible interest (HELOC for home improvement, margin loans for investment purposes). Consult a CPA or tax advisor for your specific situation.