Homeowner Tax Deductions and Credits You Should Not Miss

How it works

The mortgage interest deduction is the centerpiece of homeowner tax benefits. You can deduct interest paid on mortgage debt up to $750,000 ($375,000 if married filing separately) for loans originated after December 15, 2017.

How it works: Your mortgage lender sends Form 1098 in January showing the total interest you paid during the year. You report this amount on Schedule A (Itemized Deductions) of your tax return.

Who benefits most: Homeowners in the early years of their mortgage pay the most interest and get the largest deduction. On a $400,000 mortgage at 6%, you pay roughly $23,800 in interest during year one. This alone nearly exceeds the married standard deduction of $30,000 when combined with property taxes.

Who may not benefit: Homeowners with smaller mortgages, lower interest rates, or mortgages well into their repayment term may find that their interest plus other deductions does not exceed the standard deduction. In that case, the standard deduction is better.

Home equity loan interest: Interest on home equity loans or HELOCs is deductible only if the funds are used to buy, build, or substantially improve the home that secures the loan. Interest on home equity debt used for other purposes (debt consolidation, vacations) is not deductible.

The SALT cap

State and local property taxes are deductible when you itemize, but subject to the $10,000 SALT cap.

The SALT cap: The total deduction for all state and local taxes — including property taxes, state income taxes, and local taxes — is capped at $10,000 per tax return ($5,000 if married filing separately). This cap was introduced by the Tax Cuts and Jobs Act in 2018.

Impact: Homeowners in high-tax states (New Jersey, New York, California, Illinois, Connecticut) often hit this cap with property taxes alone, meaning they get no additional tax benefit from their state income taxes. Homeowners in low-tax states are less affected.

What counts: Real estate taxes on your primary residence and any additional properties. Special assessments for local improvements may or may not be deductible depending on their nature — maintenance assessments are generally deductible while improvement assessments are not.

Energy Efficient Home Improvement Credit (25C)

Unlike deductions, which reduce your taxable income, credits directly reduce the tax you owe dollar-for-dollar. Energy efficiency credits are especially valuable because they do not require itemizing — you can take them with the standard deduction.

Energy Efficient Home Improvement Credit (25C): Covers 30% of the cost of qualifying improvements, up to $3,200 per year. Qualifying improvements include heat pumps and heat pump water heaters (up to $2,000), insulation and air sealing ($1,200 cap), energy-efficient windows ($600 cap), doors ($500 cap), and electrical panel upgrades ($600 cap). This credit resets annually, so you can claim it every year you make qualifying improvements.

Residential Clean Energy Credit (25D): Covers 30% of the cost of solar panels, solar water heaters, battery storage, geothermal heat pumps, and small wind turbines with no annual cap. A $25,000 solar installation generates a $7,500 credit. This credit can be carried forward to future years if it exceeds your tax liability.

These credits are available through 2032 and represent one of the best financial incentives for home upgrades currently available.

Requirements

When you sell your primary residence, you can exclude up to $250,000 in capital gains from taxes ($500,000 for married couples filing jointly). This is one of the most generous tax breaks in the entire tax code.

Requirements: You must have owned the home for at least 2 of the 5 years before the sale and used it as your primary residence for at least 2 of those 5 years. The 2-year periods do not need to be consecutive.

Example: You bought a home for $300,000 and sell it for $550,000. Your capital gain is $250,000. If you are single and meet the ownership and use tests, the entire gain is tax-free. If married filing jointly, you have room for up to $500,000 in gains before any tax applies.

This exclusion can be used repeatedly — every time you sell a qualifying primary residence, as long as you have not claimed the exclusion within the past 2 years.

Mortgage points deduction

Mortgage points deduction: If you paid discount points to lower your mortgage rate, those points are generally deductible. Points on a purchase mortgage are deductible in the year paid. Points on a refinance are amortized over the life of the loan.

Home office deduction: If you are self-employed and use a portion of your home exclusively and regularly for business, you can deduct home office expenses. The simplified method allows $5 per square foot up to 300 sq ft ($1,500). This deduction is not available for W-2 employees working from home.

Mortgage insurance premiums: Private mortgage insurance (PMI) premiums may be deductible if your income is below certain thresholds. This deduction has been intermittently available — check current year rules.

Moving expenses: Generally no longer deductible for most taxpayers since 2018, but active-duty military members who move due to a military order can still deduct moving expenses.

Add up your potential itemized deductions

The standard deduction increased significantly under the 2017 tax reform, and roughly 90% of taxpayers now take the standard deduction rather than itemizing. But homeowners are more likely to benefit from itemizing than renters.

Add up your potential itemized deductions: Mortgage interest (Form 1098) + property taxes + state income taxes (up to $10,000 SALT cap combined) + charitable contributions + medical expenses over 7.5% of AGI. If this total exceeds your standard deduction, itemize.

Common scenarios where itemizing wins: New mortgage with a high balance and rate (generating $15,000+ in annual interest), high property taxes ($6,000+), significant charitable giving, or living in a high state income tax state.

Common scenarios where the standard deduction wins: Smaller or older mortgage with low remaining interest, lower property taxes, minimal charitable contributions, or no state income tax.

Your tax software will automatically calculate both scenarios and recommend whichever saves you more.