HELOC interest is tax-deductible only if you use the borrowed money to buy, build, or improve a home that secures the line of credit

The IRS allows you to deduct interest paid on a home equity line of credit under one condition: the money must go toward your home itself. If you borrow $50,000 against your house and use it to renovate your kitchen, the interest is deductible. If you use the same $50,000 to pay off credit card debt or buy a car, the interest is not.

This rule comes from Section 163(h) of the tax code, which limits deductions on "home acquisition debt" and "home equity debt." A HELOC qualifies as home equity debt when the borrowed funds improve the property that secures the line. The property must also be your primary residence or a second home — investment properties have different rules.

You also need to meet a debt limit. The total of all your mortgages and home equity borrowing on that property cannot exceed $750,000 (or $1 million if you're married filing separately and your spouse also has home equity debt). If your total home debt exceeds that, only the interest on the first $750,000 is deductible.

Key Takeaways

  • HELOC interest is deductible only when you use the borrowed money to buy, build, or substantially improve the home that secures the line of credit.
  • The property must be your primary residence or a second home — HELOCs on investment properties do not may have access to for this deduction.
  • Your total home debt (mortgages plus HELOC balance) cannot exceed $750,000 for the interest to be fully deductible.
  • You must itemize deductions on your tax return to claim HELOC interest — the standard deduction does not include it.
  • Keeping records of how you spent the borrowed money and receipts for home improvements protects you if the IRS questions the deduction.

How the IRS determines what counts as a may have access to home improvement

The IRS does not accept every home-related expense. Repairs and maintenance do not count — fixing a leaky roof or replacing worn siding is upkeep, not improvement. The work must add value to your home, prolong its life, or adapt it to a new use.

may have access to improvements include adding a room, installing a new roof, replacing windows, upgrading electrical or plumbing systems, adding insulation, or building a deck or patio. Painting the interior, replacing appliances, or landscaping generally do not may have access to unless they are part of a larger renovation project.

The line between repair and improvement can be blurry. If you replace one bathroom tile, that is a repair. If you gut and renovate the entire bathroom, that is an improvement. When in doubt, keep all receipts and documentation showing what work was done and how much it cost. The IRS may ask for proof if you claim a large deduction.

What happens if you use HELOC money for something other than home improvement

If you borrow $30,000 on your HELOC and use it to pay off credit cards, fund a vacation, or buy a vehicle, none of the interest on that $30,000 is deductible. The interest becomes personal interest, which the tax code does not allow you to deduct.

This applies even if the money technically came from a home equity line. What matters to the IRS is what you did with the money, not where it came from. You cannot deduct the interest straightforward because the debt is secured by your home.

Some people use a HELOC strategically: they borrow money to pay off non-deductible debt (like credit cards), then use the freed-up credit card limit to pay for home improvements. This does not change the tax treatment. The interest on the HELOC remains non-deductible because the money was not used for home improvement.

Itemizing deductions versus the standard deduction

Even if your HELOC interest qualifies, you can only claim it if you itemize deductions on your tax return. Most taxpayers take the standard deduction instead, which is a flat amount the IRS allows without requiring you to list individual deductions.

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) exceed these amounts, itemizing saves you money. If they do not, the standard deduction is better.

You calculate this by adding up all deductible expenses. If you paid $8,000 in mortgage interest, $3,500 in property taxes, and $2,000 in HELOC interest on home improvements, your total itemized deductions would be $13,500. For a single filer, that is less than the $14,600 standard deduction, so you would not benefit from itemizing. A married couple filing jointly would also come out ahead with the standard deduction.

Keeping records to support your HELOC interest deduction

The IRS does not require you to attach receipts to your tax return, but you must keep them in case of an audit. Save your HELOC statements showing interest paid each year, invoices from contractors or suppliers, and any permits or inspection documents related to the home improvement work.

Create a straightforward record showing the date you borrowed the money, the amount, what you spent it on, and the dates of the work. If you borrowed $40,000 in March and used it for a kitchen renovation completed in June, document that timeline. If you borrowed money in tranches and used it for multiple projects, track each one separately.

If the IRS questions your deduction, you will need to show that the money went to home improvement, not personal use. A contractor's invoice with your address and a description of the work is strong evidence. A bank transfer to a contractor's account is also helpful. Vague records or missing documentation can result in the IRS disallowing the deduction and assessing back taxes and penalties.

The $750,000 debt limit and how it affects your deduction

The IRS caps the amount of home debt on which you can deduct interest. If your first mortgage is $400,000 and your HELOC balance is $200,000, your total home debt is $600,000. All of the interest on both is deductible (assuming the HELOC money went to home improvement), because you are under the $750,000 limit.

If your first mortgage is $500,000 and your HELOC balance is $300,000, your total is $800,000. Only the interest on the first $750,000 is deductible. You would calculate what portion of your HELOC balance falls within that $750,000 limit and deduct only the interest on that portion.

This limit applies per property. If you own two homes and have a HELOC on each, each property has its own $750,000 cap. The limit also does not change based on your income or filing status — it is the same for everyone.

Second homes and investment properties

A HELOC on a second home (a vacation house or cabin you own but do not live in full-time) follows the same deduction rules as a primary residence. The interest is deductible if you use the borrowed money for home improvement and your total home debt does not exceed $750,000.

A HELOC on an investment property (a rental house or apartment building) does not may have access to for this deduction. Interest on investment property debt is handled differently and may be deductible as a business expense if you are renting the property, but the rules are separate and more complex.

Frequently Asked Questions

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

No. Using HELOC money to pay off a mortgage is a refinancing transaction, not a home improvement. The interest on the HELOC is not deductible because the money did not add value to your home. However, if you used the HELOC to pay off the mortgage and then used freed-up cash flow to renovate your kitchen, the HELOC interest still would not be deductible — what matters is what you did with the borrowed money itself.

What if I borrowed on my HELOC for multiple purposes — some home improvement and some personal?

You must track the use of each portion separately. If you borrowed $50,000 and spent $30,000 on a new roof and $20,000 on a car, only the interest on the $30,000 is deductible. The IRS requires you to document how you spent the money. Commingling the funds in a single account makes this harder to prove, so consider keeping separate accounts or detailed records for each use.

Do I need to report my HELOC interest to the IRS even if I do not itemize?

No. If you take the standard deduction, you do not report HELOC interest on your tax return at all. Your lender will send you a Form 1098 showing the interest paid, but you only use that form if you itemize. If you take the standard deduction, you can disregard it for tax purposes.

What if my home improvement project cost less than the HELOC interest I paid?

You can still deduct the interest. The deduction is based on how you used the borrowed money, not on whether the improvement added value equal to the interest cost. If you borrowed $20,000 for a $15,000 roof replacement and paid $1,200 in interest, all $1,200 is deductible because the money went to home improvement.

Can I deduct HELOC interest if I have not finished the home improvement yet?

Yes, as long as the work is in progress or completed. The IRS does not require the improvement to be finished before you claim the deduction. If you borrowed money in 2024 and the contractor is still working on the project in 2025, you can deduct the 2024 interest. What matters is that you borrowed the money with the intent to improve the home and actually spent it on that purpose.