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

The IRS allows you to deduct HELOC interest only when the loan is secured by your home and the money goes toward home improvement or purchase. If you borrow against your home equity and use that money for anything else — paying credit cards, funding a business, covering medical bills, or taking a vacation — the interest is not deductible, even though the loan itself is backed by your house.

This rule comes from Section 163(h) of the tax code. The distinction matters because many people assume that because a HELOC is tied to their home, all the interest automatically qualifies. It does not. The IRS cares what you did with the money, not just what secured the loan.

The total amount of home equity debt on which you can deduct interest is capped at $750,000 (or $375,000 if you are married filing separately). This limit applies to all home equity loans and HELOCs combined, not per loan.

Key Takeaways

  • HELOC interest is deductible only if you used the borrowed funds for home purchase, construction, or substantial improvement — not for other purposes like debt consolidation or personal expenses.
  • You must itemize deductions on your tax return to claim HELOC interest; the standard deduction is higher for most taxpayers, so few people benefit from this deduction.
  • The $750,000 cap on deductible home equity debt applies to all your home loans combined, including mortgages, HELOCs, and home equity loans.
  • You will need documentation showing what you spent the HELOC money on — contractor invoices, purchase agreements, or bank statements showing the transfer — if the IRS ever questions your deduction.

What counts as a deductible use of HELOC funds

The IRS recognizes these uses as may have access to for interest deduction: buying a home, building a new home on land you own, or making improvements that add value to your home or prolong its useful life. Improvements include a new roof, kitchen remodel, bathroom renovation, addition, deck, or major system replacement like HVAC or plumbing.

Routine maintenance does not count. Painting, fixing a leak, or replacing a worn-out appliance with the same model does not may have access to because it does not add value or extend the home's life in the IRS's view. The line between improvement and maintenance is not always clear, and the IRS has specific guidance on what passes. When in doubt, keep receipts and the contractor's description of the work.

If you borrowed $50,000 on a HELOC and spent $30,000 on a kitchen remodel and $20,000 on a car, you can deduct interest only on the $30,000 portion. You will need to track this split carefully and calculate the deductible interest proportionally.

Why most people cannot use this deduction

To claim HELOC interest as a deduction, you must itemize deductions on your tax return instead of taking the standard deduction. The standard deduction for 2024 is $14,600 for single filers and $29,200 for married couples filing jointly. For most households, the standard deduction is larger than the sum of all itemized deductions combined, including mortgage interest, property taxes, and HELOC interest.

You would need enough total itemized deductions to exceed the standard deduction before HELOC interest helps you. If your only deductible item is HELOC interest of $5,000, and you are single, you would take the standard deduction of $14,600 instead. The HELOC interest does you no tax benefit.

High-income households in states with high property taxes — California, New York, New Jersey, Connecticut — are more likely to have enough itemized deductions to exceed the standard deduction. Even then, the $10,000 cap on state and local tax deductions (SALT) limits how much property tax you can deduct, which reduces the total itemized deductions available.

Documentation you need if audited

If the IRS questions your HELOC interest deduction, you will need to show what you did with the money. Keep the HELOC draw statement showing when you borrowed the funds, bank statements showing where the money went, and receipts or invoices from contractors, builders, or sellers proving the home-related purchase or improvement.

If you borrowed $100,000 and used $60,000 for a home addition and $40,000 to pay off a credit card, your bank statement should show the $60,000 transfer to the contractor and the $40,000 transfer to the credit card company. The IRS can then verify that only $60,000 qualifies.

Commingling funds makes this harder. If you deposited the HELOC money into a general checking account and then paid multiple bills from that account, you will need to trace which specific payments came from the HELOC funds. This is possible but requires detailed records. The cleaner approach is to have the HELOC funds sent directly to the contractor, builder, or seller when possible.

How to calculate deductible interest

Your HELOC statement shows the total interest you paid during the year. If all the borrowed money went to a may have access to home use, all the interest is deductible (up to the $750,000 cap). If only part of the borrowed money qualifies, you deduct only the proportional interest.

Example: You borrowed $100,000 on a HELOC at 8% interest. You spent $70,000 on a home addition and $30,000 on a car. Your total interest for the year is $8,000. You can deduct $5,600 (70% of $8,000). The remaining $2,400 is not deductible.

If you have multiple HELOCs or a HELOC plus a home equity loan, add up all the balances. If the combined total exceeds $750,000, only the interest on the first $750,000 is deductible. The calculation becomes more complex if you paid down the loans during the year, because the deductible amount changes month to month. A tax professional can help with this.

State and local tax treatment

Some states follow the federal rule exactly. Others have different rules or do not allow HELOC interest deduction at all at the state level, even if it is deductible on your federal return. A few states allow deduction of HELOC interest for any use, not just home-related uses.

Check your state's tax guidance or speak with a tax professional who knows your state's rules. The federal deduction does not automatically carry over to state taxes.

Frequently Asked Questions

Can I deduct HELOC interest if I used the money to pay off credit card debt?

No. The IRS does not allow deduction of HELOC interest when the money is used for debt consolidation or personal expenses, even though the loan is secured by your home. Only interest on funds used for home purchase, construction, or improvement qualifies.

What if I borrowed for a home improvement but later used the HELOC for other things?

The deduction is based on what you originally did with the money, not what you do later. If you borrowed $50,000 for a kitchen remodel and later withdrew another $20,000 for a car, the interest on the first $50,000 remains deductible, but interest on the second $20,000 is not. Track each draw separately.

Does the $750,000 cap include my mortgage?

Yes. The $750,000 limit applies to all home equity debt combined — your primary mortgage, second mortgage, HELOC, and home equity loans all count toward the same cap. If your mortgage balance is $500,000, you can deduct interest on only $250,000 of HELOC or home equity loan debt.

If I do not itemize, can I still deduct HELOC interest?

No. HELOC interest is only deductible if you itemize deductions on Schedule A. If you take the standard deduction, you cannot deduct HELOC interest at all, regardless of how you used the money.

Do I need to report the HELOC on my tax return even if I do not deduct the interest?

You do not need to report the HELOC itself. You only report deductible interest on Schedule A if you itemize. If you do not itemize or if the interest is not deductible, there is no reporting requirement for the HELOC.