Here’s how to claim the home mortgage interest tax deduction and what to expect in the process.

How To ​Claim Mortgage Interest on Your Tax Return

​You must itemize your tax deductions on Schedule A of Form 1040 to claim mortgage interest. That means forgoing the standard deduction for your filing status. You can itemize, or you can claim the standard deduction, but you can’t do both.  Enter your mortgage interest costs on lines 8 through 8c of Schedule A, then transfer the total from Schedule A to line 12 of the 2021 Form 1040. 

Determining How Much Interest You Paid on Your Mortgage

You should receive Form 1098, the Mortgage Interest Statement, from your mortgage lender after the close of the tax year, typically in January. This form reports the total interest you paid during the previous year if it exceeds $600. You don’t have to attach the form to your tax return, because the financial institution must also send a copy of Form 1098 to the IRS, so the IRS already has a copy. Make sure the mortgage interest deduction you claim on Schedule A matches the amount that’s reported on Form 1098. The amount you can deduct might be less than the total amount that appears on the form, based on certain limitations. 

Is the Deduction Worth Claiming?

Schedule A covers many other deductible itemized expenses as well, including real estate property taxes, medical expenses, and charitable contributions. ​Sometimes all these add up to more than the standard deduction for your filing status, making it worth the time and effort to itemize your deductions, but sometimes they don’t.  It may be smart to skip the home mortgage interest deduction and claim the standard deduction if the total of all your itemized deductions doesn’t exceed the amount of the standard deduction you’re entitled to. Standard deduction rates are as follows:

Single taxpayers and married taxpayers who file separate returns: $12,950 for tax year 2022Married taxpayers who file jointly and for qualifying widow(er)s: $25,900 for tax year 2022Heads of household: $19,400 for 2022

Do All Mortgages Qualify for This Tax Deduction?

The home mortgage interest tax deduction comes with several qualifying rules. This includes interest you paid on loans to buy a home, home equity lines of credit (HELOCs), and even construction loans. But the TCJA placed a significant restriction on home equity debt beginning with the 2018 tax year. You can’t claim the deduction for this type of loan unless you can prove that it was taken out to “buy, build, or substantially improve” the property that secures the loan. You can’t claim the tax deduction if you refinance to pay for a college education or wedding, either.  The tax deduction is also limited to interest you paid on your main home or a second home. Interest paid on third or fourth homes isn’t deductible. The home can be a single-family dwelling, condo, mobile home, cooperative, or even a boat—pretty much any property that has “sleeping, cooking, and toilet facilities,” according to the IRS.

You Must Be the Obligor

​The mortgage can’t be in someone else’s name unless it’s your spouse and you’re filing a joint tax return. You’re entitled to deduct only the mortgage interest that you personally paid, regardless of who received the Form 1098 from the lender. You must also have a contractual obligation to pay the loan back. Your home must act as security for the loan, and your mortgage documents must clearly state that.

Home Construction Loans

You can deduct interest on mortgages used to pay for construction expenses if the proceeds are used exclusively to acquire the land and construct the home. Expenses incurred during the 24 months before construction is completed count toward the $750,000 limit on home-acquisition debt.

Mortgage Interest Is Deductible on Loans up to $750,000

Loans that are used to buy or build a residence are referred to as “home acquisition debts.” The term refers to any loan you take for the purpose of “acquiring, constructing, or substantially improving” a qualified home.  It used to be that you could deduct interest on home acquisition debts of up to $1 million for your main home and/or your secondary residence, but the TCJA reduced this to $750,000 beginning with tax year 2018. The limit drops even more, to $375,000, if you’re married and filing a separate return. Let’s say you borrowed $1 million against your primary residence in 2022. That exceeds the $750,000 limit set by the TCJA, so you can only claim mortgage interest paid on the first $750,000 you borrowed.

Exceptions to the Rule 

The IRS acknowledges two exceptions to the $750,000 loan limit. You can use the old $1 million limit in two circumstances.

Points You’ve Paid on Your Mortgage

Points paid on a mortgage for your main home are generally deductible over the life of the loan. Points are fully deductible in the tax year in which they were paid if you can meet a series of nine IRS criteria.