Gaming the Mortgage Interest Deduction Under the New Tax Law
The rise in the standard deduction means far fewer people will be deducting mortgage interest.


Note: The editors of Kiplinger's Personal Finance magazine and the Kiplinger Tax Letter are answering questions about the new tax law from subscribers to our free Kiplinger Today daily email. See other reader Q&As about the new tax law, or submit your own question.
Question: My wife and I owe about $250,000 on our home mortgage, the interest on which we have always deducted along with our other itemized deductions. Now that Congress has doubled the standard deduction, though, we’ll stop itemizing and lose the benefit of the mortgage interest deduction.
We also own an apartment building free-and-clear and are thinking of borrowing $250,000 against it, and using the money to retire the home mortgage. Then, we could deduct the interest on the apartment loan to offset our rental income. Will that work?

Sign up for Kiplinger’s Free E-Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
Answer: Nice try, but ... The deductibility of interest turns on the use of the borrowed money, not the security for the loan. While interest on money borrowed to buy or improve a rental property can be deducted against rental income, money used for a personal purpose, such as paying off a home mortgage, is nondeductible.
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.

-
Stock Market Today: Another Quarter, More Mixed Price Action
"Up and to the right" remains the general trend despite persistent uncertainty around critical policy issues.
-
Over 100k Medicare Accounts Breached in Latest Hack: Was Yours One?
Letters are going out to 103,000 Medicare beneficiaries who may have been impacted. Here's how to protect your identity and benefits.
-
Why Elon Musk, Most Americans Oppose Trump's 'Big Beautiful' Tax Bill
Tax Policy President Trump is betting big on his new tax cuts being passed by July 4. But not everyone is on board.
-
2025 SALT Cap Could Hurt Top 'Hidden Home Cost'
Tax Deductions The latest GOP tax bill might make hidden homeowner costs worse for you. Here’s how.
-
No Social Security Tax Cuts in Trump’s 'Big Bill'? What Retirees Need to Know
Tax Policy Eliminating taxes on Social Security benefits is missing from President Trump’s proposed tax overhaul. Here’s why and what an alternative offering could mean for retirement taxes.
-
Retire in the Bahamas With These Three Tax Benefits
Retirement Taxes Retirement in the Bahamas may be worth considering for high-net-worth individuals who hate paying taxes on income and capital gains.
-
Five Surprising GOP Senate Bill Tax Changes to Know
Tax Policy Senate Republicans proposed tax changes for Trump’s ‘one big, beautiful bill.” Some provisions have stirred debate.
-
Senate Approves $6,000 'Bonus' Tax Deduction for Those Age 65 and Older
Tax Reform Under Trump’s ‘big bill,’ the U.S. Senate has proposed a larger bonus tax deduction for older adults than the House. Will it be enacted?
-
2025 Virginia Tax Rebate Checks Coming Soon? What to Know Now
Tax Rebates Given a historic 2025 gubernatorial race, tax policy will remain a key issue for Virginians in the months ahead.
-
Don't Miss These Four Tax Breaks for Americans Living Abroad in 2025
International Tax U.S. expats can reduce their tax burden by taking advantage of a handful of tax credits and deductions.