Mortgage interest is deductible only if you itemize deductions and meet specific conditions

You can deduct mortgage interest on your federal tax return, but only under certain conditions. The main requirement is that you must itemize deductions rather than take the standard deduction. You also must own the home, the loan must be secured by the home itself, and the debt cannot exceed $750,000 (or $1 million if the loan was taken out before December 16, 2017). If you meet these conditions, you report the deduction on Schedule A of Form 1040.

The deduction applies to interest you paid during the tax year, not the principal. Your lender sends you a Form 1098 each January showing how much interest you paid in the previous year. If you did not receive one, you can calculate the interest from your loan statements or mortgage payment records.

Key Takeaways

  • You must itemize deductions on Schedule A to claim mortgage interest; the standard deduction disqualifies you from this deduction.
  • The loan must be secured by your primary residence or a second home, and the total debt cannot exceed $750,000 (or $1 million for loans before December 16, 2017).
  • Only the interest portion of your payment counts—principal payments are never deductible.
  • Your lender provides Form 1098 showing the interest paid, which you use to complete Schedule A.
  • Itemizing makes sense only if your total deductions (mortgage interest, property taxes, charitable gifts, and others) exceed the standard deduction for your filing status.

Itemizing versus the standard deduction

The choice between itemizing and taking the standard deduction determines whether mortgage interest helps you at all. The standard deduction is a flat amount based on your filing status—for 2024, it ranges from $14,600 for single filers to $29,200 for married couples filing jointly. If your itemized deductions add up to less than this amount, you get no tax benefit from mortgage interest.

When you itemize, you add up mortgage interest, property taxes (capped at $10,000 per year), charitable donations, medical expenses above a threshold, and other may have access to expenses. If this total exceeds your standard deduction, you report it on Schedule A and reduce your taxable income by the difference. Many homeowners with mortgages find that itemizing saves them money, especially in high-tax states or if they make large charitable gifts.

A tax professional or tax software can calculate both scenarios for you. Run the numbers before filing to see which approach gives you the larger deduction.

Debt limits and what counts as a may have access to home

The mortgage must be secured by the home—meaning the lender has a legal claim to the property if you stop paying. A home equity line of credit or second mortgage on your primary residence or a second home qualifies. A personal loan, even if you used the money to pay for home repairs, does not may have access to because it is not secured by the home.

The total debt on may have access to homes cannot exceed $750,000. If you have a $600,000 mortgage on your primary home and a $200,000 mortgage on a vacation home, your total is $800,000, which exceeds the limit. In this case, you can deduct interest only on the first $750,000 of debt. Loans taken out before December 16, 2017, fall under the old $1 million limit, so if your debt predates that cutoff, you may have more room.

You can deduct interest on a mortgage for your primary residence and one other home—typically a vacation home or rental property you live in part of the year. You cannot deduct interest on a third home, even if you own it outright.

How to report mortgage interest on your tax return

Start by gathering your Form 1098 from your lender. This form shows the interest you paid in the tax year and is sent by January 31. If you paid off a mortgage during the year, you may receive a Form 1098 showing only the interest paid before payoff. If you refinanced, you may receive two forms—one from your old lender and one from your new lender.

Enter the total mortgage interest from your Form 1098 on Schedule A, line 8. If you paid interest to a lender that did not send a Form 1098 (rare but possible), you can still deduct it if you have documentation. Add your mortgage interest to other itemized deductions like property taxes and charitable gifts. If the total exceeds your standard deduction, file Schedule A with your Form 1040.

Keep copies of your Form 1098 and mortgage statements with your tax records for at least three years in case the IRS requests verification.

When mortgage interest does not help your taxes

If your itemized deductions fall short of the standard deduction, mortgage interest provides no tax benefit. This happens to many homeowners, especially those with smaller mortgages, those in lower-tax states, or those who do not make large charitable donations. For example, a single filer with a $200,000 mortgage in a state with low property taxes might have only $8,000 in total deductions—well below the $14,600 standard deduction.

Refinancing to a lower interest rate also reduces the interest you pay and therefore the deduction you can claim. This is not a reason to avoid refinancing; a lower rate saves you money overall. The tax deduction is a secondary benefit, not the primary goal.

If you are unsure whether itemizing makes sense for you, calculate both scenarios using tax software or ask a tax preparer. The answer depends on your specific situation and changes year to year.

Interest on home equity loans and lines of credit

Interest on a home equity loan or home equity line of credit (HELOC) is deductible under the same rules as mortgage interest, provided the loan is secured by your home and the total debt does not exceed the $750,000 limit. Many homeowners use these products to borrow against the equity they have built in their home.

The interest is deductible only if you use the borrowed money for home improvements or other purposes that the IRS recognizes. If you borrow against your home to pay off credit card debt or buy a car, the interest is still deductible as long as the loan is secured by the home and you itemize. This is different from credit card interest, which is never deductible.

Track the total of all loans secured by your home—mortgage, home equity loan, and HELOC combined—to may support you do not exceed the debt limit.

Frequently Asked Questions

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

No. The mortgage interest deduction is only available if you itemize deductions on Schedule A. If you claim the standard deduction, you cannot deduct mortgage interest, even if you paid a large amount.

What if I paid off my mortgage during the year?

You can deduct the interest paid up to the month you paid off the loan. Your Form 1098 will show only the interest paid before payoff. You cannot deduct interest on a mortgage that no longer exists.

Does mortgage interest deduction explore to rental properties?

No. This deduction applies only to homes you live in (your primary residence or a second home). Interest on a mortgage for a rental property is deductible as a business expense on Schedule E, not as a personal itemized deduction.

Can I deduct interest on a loan I took to buy points on my mortgage?

No. Points are prepaid interest and are deductible in the year you pay them, but only if you paid them with your own funds, not borrowed money. Interest on a loan used to buy points is not deductible.

What if my lender did not send a Form 1098?

Contact your lender and request the form. If they do not send one, you can calculate the interest from your mortgage statements and still claim the deduction, but keep documentation in case the IRS asks for proof.