Is HELOC Interest Deductible in 2026?

The tax deduction eligibility for home equity credit lines and HELOC loans is a critical point for consumers looking to maximize homeownership benefits. If you own your home, you probably have noticed that real estate prices have climbed significantly in the last year. For some homeowners, they may be enjoying 25% or more of home price increases since the pandemic started. The RefiGuide published this article to examine the tax deduction opportunities for homeowners with HELOCs and home equity loans in 2026.

Are HELOC Loans Tax Deductible in 2026?

Homeowners often ask whether HELOC interest is tax deductible, especially as interest rates and tax laws continue to evolve. In 2026, the deductibility of a Home Equity Line of Credit (HELOC) still follows rules established under the Tax Cuts and Jobs Act (TCJA)—unless Congress changes the law. Understanding how these rules work can help you decide whether a HELOC makes financial sense.

When Is HELOC Interest Tax Deductible?

In 2026, HELOC interest is only tax deductible if the borrowed funds are used to “buy, build, or substantially improve” the home securing the loan. This rule applies whether the HELOC is in first or second position. Common qualifying uses include home renovations, additions, roof replacements, or major system upgrades.

However, HELOC interest is not deductible if the funds are used for purposes such as paying off credit cards, consolidating personal debt, covering medical bills, or funding vacations—even though these may be financially practical uses.

Additionally, the total mortgage debt limit for interest deductibility remains $750,000 for loans originated after December 15, 2017. Borrowers exceeding that limit may only deduct a portion of their interest.

Benefits of HELOC Tax Deductibility

One of the biggest advantages of a tax-deductible HELOC is the potential to lower your effective borrowing cost. By deducting interest on qualified home improvements, homeowners can offset taxable income while increasing property value.

Another benefit is flexibility. A HELOC allows borrowers to draw funds as needed, which pairs well with renovation projects that occur in stages. When used correctly, the combination of lower interest rates (compared to credit cards) and possible tax deductions can make HELOCs a powerful financial tool.

Risks and Limitations to Consider

The largest risk is misuse of funds. If HELOC proceeds are used for non-qualifying expenses, the interest becomes non-deductible, eliminating the tax benefit. Record-keeping is critical—borrowers should track exactly how funds are spent.

There’s also rate risk. Most HELOCs have variable interest rates, which can rise over time, increasing monthly payments even if the interest remains deductible. Finally, because a HELOC is secured by your home, failure to repay can lead to foreclosure.

IRS Rules for HELOC Interest Deductibility — 2026 (OBBBA Permanent Law)

The tax rules governing HELOC interest deductibility were set by the Tax Cuts and Jobs Act (TCJA) of 2017, effective for loans originated after December 15, 2017. Those rules were scheduled to sunset after December 31, 2025 — but on July 4, 2025, President Trump signed the One Big Beautiful Bill Act (OBBBA), Public Law 119-21, making the TCJA home equity provisions permanent. There is no expiration. The rules below govern your 2026 taxes and all future tax years unless Congress acts again.

The single most important rule: HELOC interest is deductible only when the loan proceeds are used to buy, build, or substantially improve the home that secures the loan. Period. This is confirmed by IRS Publication 936 (2025), the OBBBA statutory text, and guidance from H&R Block, Kiplinger, Freedom Mortgage, and Thompson Greenspon CPA.

The $750,000 / $375,000 Debt Cap — Permanent Under OBBBA

The OBBBA permanently freezes the TCJA’s mortgage interest debt limits. The $1 million cap that applied before December 16, 2017 did not return and will not return under current law.

How the cap works with a HELOC: The $750,000 limit applies to your combined home acquisition debt — your first mortgage balance plus your HELOC or home equity loan balance, combined. If you owe $700,000 on your primary mortgage and take a $100,000 HELOC for a kitchen renovation, your combined debt is $800,000 — $50,000 over the cap. You can deduct interest on only $750,000 ÷ $800,000 = 93.75% of your total interest. The HELOC interest is partially deductible, not fully.

Grandfathered loans (pre-December 16, 2017): If your mortgage was taken out on or before December 15, 2017, the higher $1,000,000 / $500,000 MFS limits still apply to that loan. However, any new debt taken out after that date — including a new HELOC — is subject to the $750,000 combined cap. Having a grandfathered first mortgage does not make a new HELOC grandfathered.

Standard Deduction vs. Itemizing — The Threshold That Matters

To claim the HELOC interest deduction at all, you must itemize deductions on Schedule A rather than taking the standard deduction. The OBBBA raised the 2026 standard deduction amounts, which means fewer homeowners will find it worthwhile to itemize.

Practical example: A married couple with a $500,000 mortgage at 6.22% (Freddie Mac PMMS March 19, 2026) pays approximately $31,100 in mortgage interest in year one — already close to the $31,500 MFJ standard deduction. Adding HELOC interest of $5,736 on an $80,000 renovation HELOC at 7.17% (Bankrate March 18, 2026) pushes itemized deductions to ~$36,836 — exceeding the standard deduction by about $5,336 and making itemizing worthwhile. For this couple, the HELOC interest deduction saves approximately $1,334 in federal taxes (at a 25% marginal rate).

What Changed Under OBBBA (July 4, 2025) — New for 2026

HELOC Interest: Qualifying vs Non-Qualifying Uses — 2026

The IRS “buy, build, or substantially improve” test is the only standard that matters. The table below gives a definitive reference for common HELOC uses — what qualifies for the deduction and what does not. This is the most practical planning tool on this page.

Legal basis: One Big Beautiful Bill Act (OBBBA), Public Law 119-21, signed July 4, 2025 — permanently extended TCJA home equity interest deduction rules (IRS §163(h)). Debt caps ($750,000/$375,000 MFS): OBBBA §101, confirmed by Thompson Greenspon CPA (tgccpa.com), H&R Block (hrblock.com), Kiplinger (kiplinger.com), Freedom Mortgage (freedommortgage.com), Fidelity (fidelity.com), and Yahoo Finance (finance.yahoo.com). Standard deduction figures: OBBBA, confirmed by Krieg DeVault LLP OBBBA analysis (kriegdevault.com). PMI deductibility effective tax year 2026: OBBBA §103; confirmed by H&R Block and Thompson Greenspon. SALT cap $40,000 for tax years 2025–2029: OBBBA §102; Krieg DeVault LLP. HELOC national average rate 7.17%: Bankrate weekly survey, March 18, 2026. Mortgage rate 6.22%: Freddie Mac PMMS, March 19, 2026. IRS Publication 936 (2025) governs tracing and substantiation. This article is for informational purposes only and does not constitute tax or legal advice.

Case Study #1: Tax-Deductible HELOC for Home Improvement

Profile:

• Home value: $600,000

• HELOC balance: $80,000

• Use of funds: Kitchen remodel and roof replacement

Outcome: Because the HELOC funds were used to substantially improve the home securing the loan, the homeowner can deduct the interest paid in 2026 (subject to IRS limits). The renovation increased the home’s value while reducing the effective cost of borrowing through tax savings.

Case Study #2: Non-Tax Deductible HELOC for Debt Consolidation

Profile:

• Home value: $500,000

• HELOC balance: $60,000

• Use of funds: Credit card and personal loan payoff

Outcome: Although the HELOC lowered the borrower’s interest rate and simplified payments, the interest is not tax deductible in 2026 because the funds were not used for home improvements. The borrower still benefited financially—but without the added tax advantage.

In 2026, HELOC loans can be tax deductible—but only under specific conditions. When used strategically for qualifying home improvements, a HELOC can deliver both financial flexibility and tax advantages. However, misuse of funds, rising interest rates, and the risk of leveraging your home make careful planning essential. Always consult a tax professional to confirm deductibility based on your situation before relying on the tax benefits of a HELOC.

Home Equity Line Of Credit Tax Deductibility Opportunities

If that has happened in your area, you may be thinking about pulling equity out of your home with a home equity line of credit or HELOC.

This second mortgages allows you to tap some of your equity to use on things you need, such as improve your home, pay for college education, or start a business. Some people also use the loan to pay off credit cards.

However, if you plan to get a HELOC and pull-out equity, what are the tax implications? The IRS has been making changes to tax laws in recent years, so what’s going to happen with HELOC interest for 2026?

IRS Tax Rules for HELOC Interest For 2026

The IRS has stated several times since 2018 that taxpayers can often deduct the interest, they pay on home equity loans and lines of credit. The home equity tax deduction rules include itemizing deductions and using the home equity loan or HELOC to buy, build, or improve your home. The interest on the home equity lines may also be tax-deductible under the same rules.

In most cases, you can claim a tax deduction for the interest you pay on up to $750,000 of home equity loan debt with any filing status except married filing separately. In that case, you can only deduct interest on up to $375,000 of home mortgage debt.

These limits went into effect for loans taken out on or after December 16, 2017 as part of the federal Tax Cuts and Jobs Act (TCJA). The HELOC interest tax deduction will expire on the last day of 2025, unless the U.S. Congress extends the date beyond.

The Tax Cuts and Jobs Act of 2017, however, did suspend the interest deduction on HELOCs and home equity loans, UNLESS homeowners use them to make improvements on the home.

Under the new IRS rules, interest on a HELOC-loan that was taken out to add a room to an existing home is usually deductible. But interest on a home equity loan to pay for college tuition isn’t deductible.

As under the earlier law, the home equity loan or home equity line of credit must be secured by the homeowner’s primary residence.

New Dollar Limits

If you are thinking about taking out a second mortgage, the new IRS law has a lower dollar amount on mortgages that qualify for the mortgage interest deduction.

Starting in 2018, taxpayers are only allowed to deduct mortgage interest on $750,000 of residence loans. And the limit has been set at $375,000 for a taxpayer who is married and filing a separate return.

These amounts have been reduced from $1 million and $500,000 for a married homeowner filing a separate tax return.

The new limits are applicable to the combined dollar amounts of loans that are taken out to build, buy or improve the home and second home. Lear more about tax deductions for home equity loans in 2026.

Examples Of How Much HELOC Interest You Can Deduct

As noted above, if you’re married and filing a joint return, you only can deduct interest on $1 million or less of home debt, and $100,000 or less of home equity debt.

If you are filing separately, the limits are $500,000 for home debt and $50,000 in home equity debt.

So, if your mortgages are taken out to buy, build, or improve a first or second home and the total is $1 million, you are allowed by the IRS to deduct all the interest.

For instance, if you have an interest rate of 4% on two mortgages that total $1 million, you are allowed to tax deduct your yearly interest payments of $40,000.

But if you have $2 million in home debt, you only are allowed to deduct 50% of the interest you paid on the $2 million of mortgages.

If you have a 4% interest rate, you only are allowed to deduct $40,000 instead of $80,000. The limit does not apply to legacy debt, but you cannot deduct more interest if the legacy debt is already more than $1 million. So, if you have $900,000 in legacy debt, you only are allowed to write off interest for $100,000 of home debt.

Grandfathered Mortgages

Also key in understanding how much mortgage debt you can write off on second mortgages is when you took out the loan. If you took it out before December 16, 2017, you are allowed to deduct interest on up to $1 million of mortgage debt if the mortgage is used to buy, build or improve your home.

However, having one loan that has been grandfathered does not make other loans the same status. For instance, if you owe $800,000 on a loan that was taken out in 2016, you are not allowed to take out another loan for $200,000 this week and deduct mortgage interest on the entire $1 million.  Get up to speed on the latest home equity financing opportunities, see HELOC versus Home Equity Loan.

What Are the Most Important Home Improvements?

Now that you understand what the IRS rules deducting interest on a second mortgage, let’s look at the improvements that are best for your wallet:

• Wood deck: When you add something to the outside of the home that makes it more usable, it’s usually a good investment of your home equity dollars. A deck is a great addition, and it can really add value to your home if you choose wood, with an estimated 82% ROI.
• Kitchen: When people are considering buying a home, they usually check out the kitchen first. It also is one of the first things people consider when making an offer because they would rather not have to spend money on upgrading the kitchen. But you don’t have to spend tens of thousands of dollars on a high-end kitchen to get a good ROI. A minor upgrade including flooring, counters, and cabinets may return 80%, but a major upgrade only gives you 50% back.
• Siding replacement: If your home is more than 10 years old, the siding may date your home and not in a good way. But upgrading the siding of the home can be a good choice with about a 76% ROI assuming you replace 1200 square feet of siding. While you’re doing that, you also should think about replacing your OEM vinyl windows that can reduce your electric bills by 20% per month or more.

Under the IRS rules for deducting any kind of home loan interest, a “qualified home” may be your main home (primary residence) or second home (perhaps a vacation home, but only if you don’t rent it out). The IRS tax rules can be complex, but the recent changes to the home interest deduction for second mortgages can still save you a lot of money when you decide to make improvements on your home.

You should talk to your CPA if you have questions about how much you’re allowed to deduct.

Record-Keeping: What the IRS Requires to Claim the Deduction

The IRS does not automatically know how you spent your HELOC funds. If your return is examined, you must be able to prove that draws were used for qualifying home improvements. Maintain:

• Contractor invoices and proposals showing the scope of work and the home address
• Cancelled checks or bank statements showing payments to contractors from the HELOC
• Building permits issued by your local jurisdiction for the project
• Photos of the improvement before and after (best practice)
• HELOC statements showing draw dates, amounts, and the property address securing the loan
• For mixed-use draws, a spreadsheet allocating each draw to either qualifying or non-qualifying use, supported by receipts

IRS Fact Sheet FS-2025-03 and IRS Publication 936 (2025) are the authoritative sources on tracing and substantiation requirements. The IRS website link confirming that HELOC interest is often still deductible under the post-2017 rules is: irs.gov/newsroom/interest-on-home-equity-loans-often-still-deductible-under-new-law

⚠ Important disclaimer: This article provides general educational information about federal tax rules for HELOC interest deductibility as of March 2026. Tax law is complex and individual circumstances vary. Always consult a licensed CPA, enrolled agent, or tax attorney before claiming the HELOC interest deduction — especially if your combined mortgage debt exceeds $750,000, you have mixed-use HELOC draws, or you file married filing separately.

Last reviewed: March 23, 2026 by Bryan Dornan, Mortgage Lending Expert and Founder of RefiGuide.org. 

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