Is Mortgage Interest Tax Deductible? Here's What Homeowners Need to Know

Homeownership comes with significant financial obligations, but some of those costs can reduce your taxable income. Mortgage interest is one of the most valuable deductions available to homeowners. 

The simple answer is yes, mortgage interest can be deducted from your taxes, but only under specific circumstances. Knowing what these specific circumstances are is the key to successful tax return filing.

What Is the Mortgage Interest Deduction?

The mortgage interest deduction enables homeowners to deduct interest payments made on a mortgage for buying, building, or improving a qualified residence from the taxpayer’s gross income. However, the mortgage interest deduction is not a mandatory provision; only taxpayers who take itemized deductions on their taxes can benefit from the mortgage interest deduction. 

In most instances, the mortgage interest deduction covers only a taxpayer’s primary residence. In certain situations, the mortgage interest deduction may cover the taxpayer’s second residence too.

Who Qualifies for the Mortgage Interest Deduction?

Itemizing vs. Standard Deduction

In order to get a mortgage interest deduction, you must use the Schedule A form and take the itemized deductions rather than the standard deduction. Because the standard deduction was more than doubled by the new tax laws in 2017, there are fewer people who can benefit from taking the itemized deductions because their itemized deductions will have to exceed the standard deduction.

Loan and Property Requirements

The loan must be secured by a qualified home, meaning the home is used as collateral for the loan. This may include both your primary residence and a second home used for personal purposes. Mortgage interest on rental properties is not deductible on Schedule A as a personal itemized deduction. However, it is generally deductible as a rental business expense on Schedule E, which is an important distinction for rental property owners.

How Much Mortgage Interest Can You Deduct? 

There are limits based on when you took out the loan. For mortgages originated after December 15, 2017, the mortgage interest deduction generally applies to interest on up to $750,000 in qualified mortgage debt for both single filers and married couples filing jointly. For married taxpayers filing separately, the limit is generally $375,000 each. 

Loans taken out before this date may be subject to the previous $1 million limit under applicable grandfathering rules. Your lender generally provides Form 1098 each year, which shows the amount of mortgage interest you paid.

What Types of Mortgage Interest Are Deductible?

Primary Mortgage Interest

Interest paid on your primary mortgage is the most common type of deduction.

Home Equity Loan / HELOC Interest (only if funds used to buy/build/improve home)

The interest paid on your home equity loan or HELOC is only eligible if it was used to acquire, build, or substantially improve your property that secures the loan. If a home equity line of credit is used for other purposes, such as making payments on credit card balances, then the interest is not eligible for deductions.

Refinanced Mortgage Interest

Refinancing your mortgage does not automatically make your interest ineligible for deductions.

Mortgage Interest Deduction: A Quick Example

Assume you paid $12,000 in mortgage interest and have total itemized deductions of $18,000. For the 2025 tax year, the standard deduction for a single filer is $15,000. In this situation, itemizing your deductions could reduce your taxable income more than taking the standard deduction because your total itemized deductions are higher than the standard deduction.

Small calculation errors can create unnecessary complications or attract IRS scrutiny. If you are unsure about your deductions or tax calculations, professional tax return filing services can help ensure your return is prepared accurately.

Common Mistakes Homeowners Make When Claiming This Deduction

• Not remembering to itemize, resulting in no deduction at all.

• Miscalculating the allowable deduction for the loan value in expensive mortgages.

• Claiming a home equity interest deduction when the loan proceeds were not used to buy, build, or substantially improve the home.

• Forgetting important information contained in the Form 1098.

All of these are far more frequent occurrences than most taxpayers think they are.

Is Itemizing Deductions Just for the Mortgage Interest Even Worthwhile?

Not necessarily. For instance, if the mortgage interest along with other eligible deductions is less than the standard deduction amount, then there is no benefit from itemizing the deductions. The scenario makes more sense if there are big mortgages, substantial mortgage interest, and other deductible amounts. However, the only way of finding out whether there is any savings through itemizing deductions is to compute both methods.

How Professional Tax Return Filing Services Can Help

The mortgage interest tax deduction seems straightforward enough to understand on the face of it until one begins taking into consideration such elements as refinancing, home equity loans, and owning more than one property. Professional tax preparation companies are able to properly calculate the amount of mortgage interest you are entitled to deduct, find other itemized expenses you should be claiming, and minimize the possibility of an audit mistake. For many taxpayers, the money spent on hiring professionals pays for itself.

Final Thoughts

There is no doubt that mortgage interest will reduce your tax burden. However, you must be eligible, do the paperwork right, and comply with IRS loan limits. Because of new tax regulations and forms such as 1098, there is always a possibility that something may go wrong and result in unnecessary expenses. In order to ensure that you claim all the money you are supposed to get, the best thing to do is use the services of tax return filing agencies.

Frequently Asked Questions

Is mortgage interest tax deductible in 2026?

Yes, mortgage interest is still deductible in 2026 if you itemize deductions and your loan meets IRS requirements, including the $750,000 balance limit for loans taken after December 15, 2017.

Can I deduct mortgage interest if I take the standard deduction?

No. Mortgage interest can only be deducted if you itemize on Schedule A. If you take the standard deduction, you cannot claim it separately.

Is home equity loan interest tax deductible?

Only if the loan funds were used to buy, build, or substantially improve the home securing the debt. Using the money for other expenses makes the interest non-deductible.

Do I need Form 1098 to claim mortgage interest?

Yes. Your lender issues Form 1098 showing the interest paid during the year, which you'll need when filing to accurately claim the deduction.

Is second home mortgage interest deductible?

Yes, interest on a second home can be deducted as long as it's a qualified residence and the combined loan balance stays within IRS limits.