What is Tax Deductible Interest on Loans?

As a taxpayer, you are probably always looking for legitimate ways to reduce your tax liability and maximize your tax deductions. Claiming tax deductible interest on certain types of loans is one effective strategy to achieve this goal. Understanding what tax deductible interest is, the types of loans that qualify, deduction limits, and how to claim the interest can help you make the most of this deduction opportunity.

What is Tax Deductible Interest?

Tax deductible interest refers to the interest portion paid on a loan that can be claimed as a deduction on your income tax return. By deducting this interest, it reduces your taxable income for the year, which in turn lowers the amount of income tax you owe. Essentially, claiming tax deductible interest reduces your tax bill.

Types of Loans with Tax Deductible Interest

The key is knowing which types of loans allow you to deduct the interest portion. Here are some of the most common loans with tax deductible interest:

  • Mortgage Loans: The interest paid on a home mortgage loan is tax deductible, whether it’s your primary residence or a second home. The mortgage must be secured by the home itself, and the loan must have been used to purchase, build, or substantially improve the home.
  • Student Loans: Interest paid on a student loan used for higher education expenses is tax deductible. This applies to loans used for undergraduate or graduate education.
  • Business Loans: Interest paid on a loan taken out for business purposes is deductible, such as a small business loan to expand your business or purchase equipment.
  • Investment Loans: Interest on a loan used to purchase investments that produce taxable income, like dividend stocks, can be tax deductible.
  • Vehicle Loans: If you use your vehicle for business or investment purposes, the interest on an auto loan may be partly or fully deductible.

Limits on the Tax Deductible Interest

While claiming tax deductible interest can reduce your tax bill, there are some limits in place that restrict the total amount you can deduct:

  • Mortgage Loan Interest Limits: You can only deduct interest on mortgage debt up to $750,000 for loans taken out after December 15, 2017. For mortgages taken out before this date, the limit is $1 million.
  • Student Loan Interest Limits: You can deduct up to $2,500 in student loan interest per tax year. This deduction starts phasing out for higher income taxpayers with a modified adjusted gross income above $70,000 ($140,000 for married filing jointly).
  • Business/Investment Loan Limits: The deductible amount for business and investment loans is limited to the amount of interest deemed necessary and reasonable for that operation. Excessive or unnecessary interest is not deductible.

How to Claim Tax Deductible Interest on Loans

Claiming tax deductible interest on your tax return is fairly straightforward:

  • Keep accurate records of interest payments made over the tax year, including payment dates, amounts, and loan details. Obtain documentation like mortgage statements.
  • Deduct interest for personal loans like mortgages and student loans using Schedule A for itemized deductions when filing your tax return.
  • Deduct interest for business or investment loans on Schedule C, E, or Form 4562.
  • Enter the total deductible interest amount on the corresponding line of your tax return.
  • Retain loan interest records and statements in case of an IRS audit.

The Benefits of Claiming Tax Deductible Interest

The key benefit of deducting qualified loan interest is reducing your taxable income and overall tax burden. This deduction can make borrowing more affordable and maximize savings. For example:

  • Deducting $5,000 in mortgage interest could reduce your tax bill by $750 to $1,500, depending on your tax bracket.
  • Claiming $2,500 in student loan interest could save you up to $600 in taxes if you’re in the 24% tax bracket.
  • Deducting $10,000 in business loan interest could reduce a sole proprietor‘s taxable income by $10,000. At a 22% tax rate, this equals $2,200 in tax savings.

As you can see, claiming tax deductible interest can lead to substantial tax savings each year. Taking the time to understand


Is interest on all loans tax deductible?

No, usually, but there are a few instances where this isn’t the case. If you use the loan proceeds for business expenses, qualified educational costs, or eligible taxable investments, you may be able to deduct the interest on personal loans.

Is interest paid on a business loan tax deductible?

The majority of the time, interest paid on business loans is a currently deductible business expense. It doesn’t matter if you pay interest on a bank loan, a personal loan, a credit card, a line of credit, a car loan, or a mortgage on real estate used for business purposes.