PATRICK'S QUICK ANSWER
Yes, mortgage interest on your primary home is generally tax deductible, but only if you itemize, and the cap sits at interest on up to $750,000 of acquisition debt. Points paid at closing can also be deducted, usually spread over the loan term. I always tell buyers to confirm the details with their tax professional, because the standard deduction changes whether itemizing pays off. It is a real benefit, but not automatic. Ask Patrick how the mortgage interest deduction would apply to your situation.
The money problem: you are about to make the biggest purchase of your life, and you want every dollar of tax benefit that comes with it. The mortgage interest deduction is real, but it is not automatic, and whether it saves you money comes down to one number: whether your itemized deductions beat the standard deduction.
Mortgage interest is deductible on your primary residence and one secondary home, up to $750,000 in mortgage debt, or $1 million for mortgages taken before December 15, 2017. On a $400,000 loan at 6.5%, you would pay approximately $25,600 in interest the first year, all deductible if you itemize. Texas has no state income tax, so this deduction applies to your federal return.
How the Deduction Works: Itemizing vs Standard
Mortgage interest is an itemized deduction, which means you can only deduct it if you forgo the standard deduction. The standard deduction for 2025 is $15,000 for single filers and $30,000 for married couples filing jointly. If your total itemized deductions, mortgage interest plus property taxes plus state and local taxes up to $10,000 plus charitable donations, exceed the standard deduction, itemizing saves you money. If not, you take the standard deduction and do not get a separate benefit from mortgage interest.
The meaning: the deduction is a choice, not a given. The IRS gives you two paths, standard or itemized, and you take the one that puts more money in your pocket.
The money consequence: the standard deduction is the bar you have to clear. If your itemized total lands below it, the mortgage interest changes nothing on your tax bill.
The real-world play: run both numbers before you assume the deduction helps. Most buyers with a mortgage of $300,000 or more at current interest rates clear the bar, but the math is the only honest answer.
Mortgage Debt Limits
The mortgage interest deduction applies to the first $750,000 of mortgage debt for homes purchased after December 15, 2017. For mortgages taken before that date, the limit is $1 million. If your mortgage is larger than $750,000, the interest on the excess is not deductible, and the limit applies per married couple, not per property.
The meaning: the deduction is capped, and the cap is tied to the date you took the mortgage, not the size of your ambition.
The money consequence: on a jumbo purchase above the line, the interest on the excess is simply not deductible, so the effective cost of that borrowing is higher than the rate suggests.
The real-world play: if your price range crosses the cap, the deduction math changes, and that is a conversation worth having before you commit to the bigger loan.
What You Can and Cannot Deduct
Deductible: Mortgage interest on your primary residence and one secondary home, mortgage discount points (deducted over the life of the loan or fully in the year paid if certain conditions are met), and prepayment penalties.
Not deductible: Homeowner's insurance premiums, mortgage insurance premiums (PMI and MIP were deductible through 2021 and may be renewed by Congress), property taxes (deductible separately under the SALT cap), and HOA fees.
The meaning: the deduction is for the interest on the money you borrowed, not the whole cost of owning the home.
The money consequence: insurance and HOA fees are real monthly costs, but they never touch the deduction, so do not budget the tax benefit as if they did.
The real-world play: keep the list straight, because the line between deductible and not is where tax-season surprises are born.
When Itemizing Makes Sense
For most homeowners with a mortgage of $300,000 or more at current interest rates, itemizing makes sense. The math: on a $400,000 mortgage at 6.5%, year-one interest is about $25,600. Add $10,000 in SALT deductions, which covers property taxes, and perhaps $2,000 in charitable donations, and you have $37,600 in itemized deductions. Compare that to the $30,000 married standard deduction. That means $7,600 in additional deductions, saving about $1,900 in federal tax at the 25% marginal rate.
The meaning: the deduction pays off when the interest plus your other itemized deductions clear the standard bar, and the bigger the mortgage, the easier the clearance.
The money consequence: in the example above, itemizing puts roughly $1,900 back in your pocket in year one, and the early years of a mortgage carry the most interest, so the benefit is front-loaded.
The real-world play: run the year-one numbers before you buy, because the deduction is part of the real cost of the home, and knowing it changes the budget.
How to Maximize the Deduction
The deduction rewards planning, and the planning starts before closing. Four moves make the most of it:
- Bundle charitable donations into alternating years to exceed the standard deduction threshold.
- Pay mortgage points at closing to increase first-year interest deductions.
- Keep good records of all deductible expenses throughout the year.
- Consider doing a Roth IRA conversion in years you itemize to fill up lower tax brackets.
The meaning: the deduction is a pile of small decisions, and each one either adds to the pile or leaves money on the table.
The money consequence: points paid at closing are deductible interest, and bundling charity can push you over the itemizing bar in the years it matters most.
The real-world play: confirm every move with your tax professional, because the deduction is a benefit worth planning for, and planning is what makes it a great one.
Ask Patrick about the mortgage interest deduction
Get a straight answer on the mortgage interest deduction and how it applies to your situation.
