Home equity line of credit interest is tax deductible only if you use the borrowed money to buy, build, or improve your home

The interest you pay on a home equity line of credit (HELOC) may be deductible on your federal tax return, but only under specific conditions. The IRS allows you to deduct interest on home equity debt up to $100,000 (or $50,000 if married filing separately) — but only if the money was used to buy, build, or substantially improve the home that secures the line of credit. If you borrowed against your home's equity to pay off credit cards, fund a vacation, or cover medical bills, that interest is not deductible.

The rules changed significantly after the Tax Cuts and Jobs Act of 2017. Before that law, you could deduct interest on up to $100,000 in home equity debt regardless of what you spent the money on. Now the deduction is tied directly to how you used the funds. This matters because many people use HELOCs for purposes other than home improvement, and they cannot claim those interest payments.

Key Takeaways

  • HELOC interest is deductible only if you used the borrowed money to buy, build, or improve your home — not for other purposes like debt consolidation or personal expenses.
  • The total amount of home equity debt on which you can deduct interest is capped at $100,000 ($50,000 if married filing separately), regardless of how much you borrowed.
  • You must itemize deductions on Schedule A to claim mortgage or HELOC interest; the standard deduction may be larger and eliminate the benefit of itemizing.
  • Your lender will send you a Form 1098 each year showing the interest you paid, but that form does not determine whether the interest is deductible — you must verify the use of funds yourself.

How the $100,000 debt limit works

The $100,000 cap applies to the total of all home equity debt you carry, not to each individual line of credit. If you have a HELOC and a home equity loan, the combined balance cannot exceed $100,000 for you to deduct all the interest. If your total home equity debt is $120,000, you can only deduct interest on $100,000 of it.

This limit is separate from your mortgage debt. Interest on your primary mortgage (up to $750,000 in principal, or $375,000 if married filing separately) is deductible under different rules. The $100,000 home equity limit sits on top of that and applies only to second mortgages, HELOCs, and home equity loans.

The cap has not changed since 2017 and does not adjust for inflation. If you borrowed $100,000 in 2017 and still owe that amount today, you still cannot deduct interest on more than $100,000 total, even though home values and borrowing amounts have risen.

What counts as using the money to improve your home

The IRS considers money "used to buy, build, or improve" your home if you spent it on permanent structural improvements or additions. This includes a new roof, foundation repair, kitchen renovation, bathroom remodel, addition of a room or deck, new HVAC system, or replacement windows. It also includes the original purchase of the home if you borrowed via a HELOC to buy it.

Routine maintenance and repairs do not count. Painting, replacing worn carpet, fixing a leaky faucet, or routine plumbing work are not considered improvements for this purpose. The IRS distinguishes between keeping your home in good condition and making it better or larger.

If you borrowed $50,000 on a HELOC and spent $30,000 on a kitchen renovation and $20,000 on a vacation, only the $30,000 portion of interest is deductible. You must track how you spent the money. Lenders do not always ask, and the Form 1098 they send you does not indicate what the money was used for — that burden is on you to document and report accurately.

When you cannot deduct HELOC interest

HELOC interest is not deductible if you used the money for personal expenses, debt consolidation, education, medical bills, or investment purposes. Common non-deductible uses include paying off credit card balances, funding a child's college tuition, covering a medical procedure, taking a vacation, buying a car, or investing in stocks or rental property.

Many people use HELOCs for debt consolidation because the interest rate is often lower than credit card rates. The interest savings are real, but the interest itself is not tax deductible. This is an important distinction: you may still benefit financially from the lower rate, but you cannot write off the interest on your tax return.

If you borrowed money for a mix of purposes — some home improvement and some personal use — you must separate them. Only the portion used for home improvement qualifies. If you cannot document how you spent the money, the IRS may disallow the entire deduction if you are audited.

Itemizing versus the standard deduction

To claim HELOC interest as a deduction, you must itemize deductions on Schedule A of your tax return. You cannot claim it if you take the standard deduction. For the 2024 tax year, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. If your total itemized deductions (mortgage interest, property taxes, charitable donations, and HELOC interest combined) do not exceed the standard deduction, you will not benefit from claiming the HELOC interest.

Many homeowners find that the standard deduction is larger than their itemized deductions, especially after the 2017 tax law changes. This means that even though your HELOC interest is technically deductible, you may not actually save money by claiming it. You should calculate both scenarios — itemizing and taking the standard deduction — to see which results in lower taxes.

If you are close to the standard deduction threshold, you might benefit from bunching deductions in certain years. For example, if you plan a major home renovation, you could take the standard deduction in years you do not itemize and itemize in the year you have high home improvement expenses and HELOC interest.

What the Form 1098 does and does not tell you

Your lender sends you a Form 1098-H (for home equity lines of credit) or includes HELOC interest on a Form 1098 (if you have a combined mortgage and HELOC with the same lender). This form shows the total interest you paid during the year. However, the form does not indicate whether that interest is deductible — it simply reports what you paid.

The IRS does not require lenders to verify how you used the borrowed money. That verification is your responsibility. You must keep records showing that the money was used for home improvement: receipts from contractors, invoices, cancelled checks, or loan documents that specify the purpose. If you are audited and cannot document the use of funds, the IRS can disallow the deduction even if your Form 1098 shows the interest was paid.

Do not assume that because a lender issued a Form 1098 showing your interest, the interest is automatically deductible. The form is a starting point for your tax calculation, but you must verify that the use of funds meets the IRS requirement.

State and local tax treatment

Some states follow federal rules for HELOC interest deductibility, while others have different rules or do not allow the deduction at all. A few states do not have income tax, so the question does not apply. If you live in a state with income tax, check your state's tax agency website or speak with a tax professional to understand how your state treats HELOC interest.

New York, California, and other high-tax states generally follow federal rules, but some states have lower caps on home equity debt or stricter definitions of what counts as a home improvement. State rules can change, and they sometimes differ from federal rules in ways that affect your overall tax liability.

Frequently Asked Questions

Can I deduct HELOC interest if I used the money to pay off my mortgage?

No. Paying off your primary mortgage is not considered using the money to improve your home under IRS rules. The interest on the HELOC used for this purpose is not deductible. However, you may still benefit from a lower interest rate on the HELOC compared to your original mortgage rate.

What if I borrowed money for home improvement but also used some for other things?

You must separate the uses. Only the portion of interest that corresponds to money spent on home improvement is deductible. If you borrowed $50,000 and spent $30,000 on a renovation and $20,000 on other expenses, you can deduct interest on only the $30,000 portion. Keep detailed records of how you spent every dollar.

Do I need receipts from contractors to prove I used the money for home improvement?

Yes, you should keep receipts, invoices, and cancelled checks showing that you paid for home improvement work. If the IRS audits you, you will need to prove that the borrowed money was actually spent on the home. Without documentation, you cannot substantiate the deduction.

If my HELOC interest is not deductible, can I still use the HELOC?

Yes. You can borrow on a HELOC for any purpose you choose. The interest simply will not be tax deductible. Many people use HELOCs for non-deductible purposes because the interest rate is competitive, even without the tax benefit. Compare the after-tax cost to other borrowing options.

Does my lender tell the IRS what I used the money for?

No. Lenders report only the interest paid on Form 1098. They do not report to the IRS how you spent the borrowed money. That means you must track and document the use yourself. The IRS may ask for proof during an audit, but your lender will not volunteer that information.