Mortgage interest deduction: What is it and what qualifies?
Quick insights
- A mortgage interest deduction on your taxes allows eligible homeowners to deduct certain interest paid on a qualified home loan.
- Not every mortgage gives you a tax break, and you usually only get this deduction if you choose to itemize instead of taking the standard deduction.
- Eligibility and benefits can vary based on loan type, home use and current tax law.
For many homeowners, tax season can come with many questions, especially around deductions related to their mortgage. A common example is the mortgage interest deduction, particularly if it’s your first tax season as a homeowner. While this is often mentioned as a homeowner “perk,” mortgage interest deduction rules may seem complex.
In this article, we will define the mortgage interest deduction, who may be eligible and how it could factor into your tax return. For information and limits that apply to your specific situation, please consult a tax professional.
What is the mortgage interest deduction?
The mortgage interest deduction is a federal tax rule that may allow homeowners to deduct interest paid on certain home loans from their taxable income. Rather than reducing the tax you owe dollar-for-dollar, this deduction may lower the portion of your income that’s subject to taxation if you meet specific criteria. A mortgage interest deduction generally applies when you itemize deductions on your tax return, rather than taking the standard deduction.
How much interest may be deductible?
As of January 2026, there are limits on the amount of mortgage debt that may be eligible for interest deductions. These thresholds can depend on when the loan was taken out and how it’s structured. For the most up-to-date information on U.S. tax laws, check out the Publication 936 home mortgage interest deduction pageOpens overlay on the IRS websiteOpens overlay.
Rather than focusing on exact figures, which can change, it may be more helpful to know that:
- Higher loan balances don’t always mean more deductible interest.
- The timing and purpose of the loan matter.
- State tax rules may differ from federal guidelines.
Mortgage interest deduction example
Imagine a homeowner who paid $9,000 in mortgage interest, $5,000 in property taxes and $2,000 in charitable donations. That adds up to $16,000 in itemized deductions.
If the standard deduction is higher than that, the homeowner would likely take the standard deduction instead. This means their mortgage interest does not provide a tax benefit that year.
What qualifies as a mortgage interest deduction?
To qualify for the mortgage interest deduction, several criteria generally apply.
Who qualifies for the deduction?
To qualify for the mortgage interest deduction, an individual must generally meet the following three requirements:
- Ownership interest: You must be legally obligated to pay the mortgage and have an ownership interest in the home. You cannot deduct interest if you are making payments on someone else’s behalf without being a legal owner or co-signer on the loan.
- Itemized deductions: You must choose to itemize your deductions on your tax return. This is only beneficial if your total itemized deductions (including mortgage interest, state/local taxes and charitable gifts) exceed the value of the standard deduction.
- Secured debt: The mortgage must be a secured debt in which you have signed a mortgage, deed of trust or land contract that makes your ownership in a qualified home security for payment of the debt.
Qualified homes
Mortgage interest may qualify if the home loan is secured by a home that is considered a qualified residence. This typically includes your primary home or a second home, such as a vacation or seasonal property. The home must have basic living features like a sleeping space, cooking facilities and a bathroom.
Eligible loans
Interest may be deductible when the loan was used to:
- Buy a home
- Build a home
- Substantially renovate or improve a home
This could include:
- Traditional purchase mortgages
- Refinance loans (with certain limits)
- Some home equity loans or lines of credit, if the money was used for qualifying improvements
If the loan proceeds were used for personal expenses like travel, credit card debt payoff or school tuition, the interest usually does not qualify.
What doesn’t count as mortgage interest deduction?
While the mortgage interest deduction is broad, several common home-related expenses do not qualify:
- Principal payments: Only the interest portion of your monthly payment is deductible; the portion that goes toward paying down your loan balance is not.
- Private mortgage insurance (PMI): Premiums paid for private mortgage insurance are generally not deductible as interest, subject to current tax laws. Please consult a tax professional.
- Settlement costs and fees: Most costs associated with obtaining a mortgage or closing a home sale—such as appraisal fees, preparation fees and notary fees—are not deductible.
- Homeowner’s insurance: Premiums for fire, hazard or flood insurance are personal expenses and cannot be deducted.
- Interest on unsecured loans: If you take out a personal loan for home repairs that is not secured by the home itself, the interest is not deductible.
- Deduction above limits: Interest paid on the portion of mortgage debt that exceeds the $750,000 limit (for newer loans) or $1,000,000 limit (for grandfathered loans) cannot be deducted.
- Non-qualified use of home equity: Interest on home equity loans or lines of credit (HELOCs) used for purposes other than buying, building or substantially improving the home (such as paying off credit card debt or buying a car) is not deductible.
Why filing status is important
Here’s where things get a little more interesting when it comes to filing. Whether the mortgage interest deduction actually helps you will depend on whether you file single or married (filing jointly), because the standard deduction is much higher for married couples.
Example: Single filer
Imagine a single homeowner who paid:
- $10,000 in mortgage interest
- $6,000 in state and local taxes
- $2,000 in charitable donations
Total itemized deductions: $18,000
If the standard deduction is around $14,000, itemizing makes sense. That homeowner may get a tax benefit from their mortgage interest.
Example: Married filing jointly
Now imagine a married couple with the same numbers:
- $10,000 mortgage interest
- $6,000 taxes
- $2,000 donations
Total itemized deductions: $18,000
If the standard deduction for married couples is around $28,000, the standard deduction offers more savings than the itemized deductions. That means itemizing to get the mortgage interest deduction doesn’t provide a tax benefit.
Despite the same house and same mortgage, come tax season, what is better will differ.
Why itemizing matters
When you file taxes, you choose one of two options: the standard deduction or itemized deductions. The standard deduction is a flat amount set by the IRS. Itemized deductions occur when you list things like mortgage interest, property taxes and charitable donations. You only get to use mortgage interest if your total itemized deductions are higher than the standard deduction. If they are not, the mortgage interest does not actually change your tax outcome.
How to claim the mortgage interest deduction
If you think you may qualify, here’s a breakdown of how the process usually works.
Step 1: Look up Form 1098
Your mortgage provider typically sends you Form 1098 early each year. This form shows how much mortgage interest you paid during the previous year. It also lists your mortgage lender and loan information.
Step 2: Add up your itemized deductions
Take the interest from Form 1098 and combine it with other itemized deductions you may have, such as:
- State and local taxes
- Property taxes
- Charitable contributions
Step 3: Compare to the standard deduction
If your itemized total is higher than the standard deduction for your filing status, itemizing may make sense. If it’s lower, the mortgage interest won’t change your tax result.
Step 4: Report it on Schedule A
If you choose to itemize, mortgage interest is reported on Schedule A of your federal tax return. This is where the deduction becomes part of your taxable income calculation.
Step 5: Keep your records
Hold on to Form 1098 and any supporting documents in case the IRS ever asks for verification. Most people keep tax records for at least several years.
In summary
The mortgage interest deduction can be helpful in some situations, but it is not automatic, guaranteed or always meaningful. For many homeowners, especially married couples, the standard deduction may already be higher than their itemized deductions. That’s why it can be smart to focus less on the deduction itself and more on what supports your overall financial health.
