Home Mortgage Interest Deduction: Who Can Claim It?

The ability to deduct home mortgage interest from your income can significantly reduce your tax liability. However, eligibility isn’t always straightforward, particularly when considering household members and shared homeownership. This article clarifies who can claim this deduction, focusing on scenarios involving heads of household and other household members.

Head of Household vs. Household Member Deductions

Generally, the deduction for mortgage interest is claimed by the head of household. However, there are circumstances where other household members—such as children or parents—can claim the deduction, even if the head of household doesn’t have earned income or doesn’t claim the deduction themselves. This is permissible if the household member meets specific criteria.

Eligibility Requirements for Household Members

For a household member to claim the mortgage interest deduction, the following conditions must be met:

• Earned Income: The household member must have earned income.
• Ownership: The home and the mortgage must be in the household member’s name.
• Residency: The household member must actually reside in the home. (The head of household is not required to reside in the home to claim the deduction.)

Determining the Number of Homes Owned by a Household

When assessing eligibility, the total number of homes owned by the entire household is considered as of December 31st. This includes homes owned by any household member. If the household owns two or more homes, the deduction is generally not allowed. However, if temporary ownership of multiple homes occurs during the tax year, the deduction may be possible for one home as of the year-finish.

Home Value and Acquisition Date Limits

To be eligible for the deduction, the home’s standard market value must be KRW 600 million or less at the time of acquisition. This rule applies to homes acquired after January 1, 2024.

Loan Requirements

The mortgage must meet certain repayment terms:

• Repayment Period: The loan must have a repayment period of at least 15 years.
• Fixed Rate/Installment: If the loan has a fixed interest rate or a non-deferred installment repayment method, the repayment period must be at least 10 years.
• Timely Borrowing: The loan must be obtained within 3 months of the date of home ownership transfer or registration.

Additional Considerations

Tax regulations regarding mortgage interest deductions can be complex. For detailed information and specific guidance, consult official IRS publications such as Publication 936, Home Mortgage Interest Deduction.