HELOC interest is deductible only if you use the borrowed money to buy, build, or improve your home

The IRS allows you to deduct HELOC interest, but only under one condition: the money must go toward your home itself. If you borrow $50,000 against your home equity and use it to pay off credit cards, fund a business, or buy a car, that interest is not deductible. If you use the same $50,000 to add a bedroom, replace the roof, or pay off a mortgage on the same property, the interest becomes deductible.

This rule comes from Section 163(h) of the tax code, which limits home equity loan deductions to loans secured by your primary residence or second home, where the proceeds go toward home acquisition or improvement. The IRS does not care how you spend the money after you receive it — only what you spent it on initially matters. You must be able to show, if audited, that the borrowed funds went to a may have access to home expense.

The deduction also has a cap. As of 2024, you can only deduct interest on up to $750,000 of home equity debt (or $375,000 if you are married filing separately). This limit applies to the combined total of your mortgage and HELOC, not the HELOC alone. If your total home debt exceeds that threshold, only the interest on the first $750,000 is deductible.

Key Takeaways

  • HELOC interest is deductible only if you used the borrowed money to buy, build, or substantially improve your home.
  • Using HELOC funds for debt consolidation, business, education, or personal expenses makes the interest non-deductible, even if the loan is secured by your home.
  • You can deduct interest only on up to $750,000 of combined home debt (mortgage plus HELOC), regardless of how much you actually borrowed.
  • You must itemize deductions on Schedule A to claim HELOC interest; the standard deduction does not include it.
  • Keeping records of how you spent the HELOC funds is essential if the IRS ever questions your deduction.

What counts as a may have access to home improvement

The IRS considers a home improvement to be work that adds value to your home, prolongs its useful life, or adapts it to a new use. Replacing a roof, adding a deck, finishing a basement, installing new plumbing or electrical systems, and adding insulation all may have access to. Painting the exterior, replacing windows, upgrading the kitchen, and adding a bathroom also count.

Repairs that simply maintain your home do not may have access to. Fixing a leaky roof to stop water damage is a repair, not an improvement, so the interest on a HELOC used for that repair would not be deductible. The line between repair and improvement can be blurry — if you replace a roof because the old one is failing, that is a repair; if you replace it with a higher-grade material that extends the roof's life beyond its original span, that becomes an improvement.

Refinancing an existing HELOC or mortgage to pay off the balance does not create a new deductible loan. The interest remains deductible only if the original loan proceeds went to a may have access to home expense. If you took out a HELOC to consolidate credit card debt and later refinanced that HELOC, the new loan's interest is still not deductible because the original funds did not go to your home.

When HELOC interest is not deductible

If you use HELOC funds for anything other than home acquisition or improvement, the interest is not deductible. Common non-may have access to uses include paying off credit cards, funding a business, paying for education, buying a vehicle, taking a vacation, or covering medical bills. Even though the loan is secured by your home, the IRS treats it as personal debt.

Debt consolidation is a frequent source of confusion. Many homeowners take out a HELOC to pay off high-interest credit cards, thinking the home equity loan will give them a tax break. It does not. The interest on that HELOC is not deductible because the money went to pay consumer debt, not to improve the home. The only tax benefit is the lower interest rate itself, not a deduction.

Using a HELOC to fund a rental property or investment property also does not may have access to for the home equity deduction. Interest on loans used to buy or improve investment properties falls under different tax rules (and may be deductible as a business expense, but that is a separate calculation). The home equity deduction applies only to your primary residence or a second home you own for personal use.

How to claim the deduction on your tax return

To deduct HELOC interest, you must itemize deductions on Schedule A of your Form 1040. 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 (HELOC interest plus mortgage interest, property taxes, charitable donations, and other may have access to expenses) exceed the standard deduction, itemizing makes sense.

On Schedule A, you will report your HELOC interest in the section for home mortgage interest. Your lender will send you a Form 1098 each January showing the interest you paid during the previous year. Use that figure as your starting point, but verify it against your own records — lenders sometimes make errors, and you are responsible for the accuracy of your return.

If you paid interest on only part of your HELOC (because you borrowed $100,000 but only used $60,000 for home improvements), you must calculate the deductible portion. This requires tracking how much of the loan went to may have access to expenses and how much went elsewhere. Many homeowners use separate accounts or loans to keep this clear — one HELOC for home improvements (deductible) and another for other purposes (not deductible).

Documentation you need to keep

The IRS does not require you to attach receipts to your tax return, but you must keep records in case of an audit. For a HELOC used to improve your home, save the loan documents, cancelled checks or bank transfers showing the funds went to the contractor or supplier, and receipts or invoices from the work itself. If you paid a contractor, keep the contract and proof of payment. If you bought materials, keep the receipts.

For a HELOC used for multiple purposes, document how much went to each use. If you borrowed $100,000 and used $60,000 for a kitchen renovation and $40,000 to pay off credit cards, keep records showing the split. Bank statements showing transfers to contractors or suppliers are often sufficient; you do not need to keep every receipt, but you should be able to reconstruct where the money went.

Keep these records for at least three years after you file your return, and longer if you claim large deductions. The IRS typically has three years to audit a return, but can go back six years if it suspects substantial underreporting of income, and indefinitely if it suspects fraud.

State tax treatment of HELOC interest

Most states that have an income tax follow the federal rules for HELOC interest deductions. However, some states have different caps or restrictions. California, for example, generally allows the same deduction as the federal government. New York allows it as well, though the state has its own income tax brackets and rates that affect the value of the deduction.

A few states do not allow any deduction for home equity loan interest, even if the federal government does. Before claiming the deduction on your state return, check your state's tax agency website or consult a tax professional familiar with your state's rules. The deduction that saves you money on your federal return might not apply to your state taxes.

Frequently Asked Questions

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

Yes. Using HELOC funds to pay down or pay off a mortgage on the same home qualifies as a home acquisition expense. The interest on that HELOC is deductible. However, you can only deduct interest on up to $750,000 of combined home debt, so if your total mortgage plus HELOC exceeds that, only part of the interest qualifies.

What if I used part of my HELOC for home improvements and part for something else?

You can deduct interest only on the portion used for home improvements. If you borrowed $100,000 and used $70,000 for a renovation and $30,000 for a car, calculate the deductible interest by multiplying your total HELOC interest by the percentage used for the home ($70,000 ÷ $100,000 = 70%). Keep records showing how the money was spent.

Do I have to itemize to deduct HELOC interest?

Yes. HELOC interest is only deductible if you itemize deductions on Schedule A. If your total itemized deductions are less than the standard deduction for your filing status, you will take the standard deduction instead, and the HELOC interest deduction is lost. Run both calculations to see which gives you a larger deduction.

Can I deduct HELOC interest on a second home or investment property?

You can deduct interest on a HELOC secured by a second home you own for personal use, as long as the funds went to acquire or improve that home. Interest on a HELOC for an investment or rental property does not may have access to for the home equity deduction, though it may be deductible as a business expense under different rules.

What happens if the IRS audits me and questions my HELOC deduction?

Provide documentation showing the loan was secured by your home, the funds went to home acquisition or improvement, and the amount of interest paid. Bank statements, contractor invoices, and the Form 1098 from your lender are the most important records. If you cannot show the funds went to a may have access to expense, the IRS will disallow the deduction and may assess back taxes, interest, and penalties.