Is HELOC Interest Tax Deductible for Business? IRS Rules

When You Can Deduct Personally

Most people get a HELOC to have money to work on their homes (the same home that is collateral for the HELOC) rather than to use for business purposes.

If that's you, and you're using the borrowed money to buy, build, or substantially improve the home that secures the line of credit, you can deduct the interest paid on the HELOC as home mortgage interest. When you do this, the IRS requires that you also itemize deductions on Schedule A rather than take the standard deduction.

There is a limit to how much you can deduct, though. For debt taken out after December 15, 2017, you can generally deduct interest on up to $750,000 of qualifying debt, or $375,000 if married filing separately. That limit applies to your qualifying mortgages collectively, not $750,000 for the HELOC on top of your existing mortgage. Older qualifying debt can be subject to different limits.

These rules were actually supposed to sunset after 2025 as part of the Tax Cuts and Jobs Act, but other tax legislation made them permanent, so they're still in place.

If what you used the HELOC money for doesn't meet the IRS standards to count as buying, building, or substantially improving the home, you still may be able to deduct it. I'll explain in the next section.

When You Can Deduct for Business

If you use HELOC money for business purposes, the interest you paid generally doesn't qualify for the home mortgage interest deduction. That said, it might instead qualify as a business interest expense.

The key to making it qualify is something the IRS calls interest tracing. It's when the treatment of the interest you paid, tax-wise, follows what you actually did with the money you borrowed rather than the property it's secured by. So to the IRS, the type of property securing the loan doesn't determine the treatment; interest relates to your business when you use the loan proceeds for a business expense.

There are a few limits and rules to know about, though. Section 163(j) can restrict how much business interest taxpayers can deduct in a given year. The IRS requires interest to first be categorized (i.e., business, investment, or personal interest) under the tracing rules before applying the Section 163(j) limitation. Many qualifying small businesses are exempt from that limitation, but the eligibility rules and gross-receipts threshold can change each year.

Let's visualize this with a real-world (but hypothetical) example, using the 7.29% national average HELOC rate reported for September 2, 2026. Suppose you draw $50,000 from a HELOC and use all of it for business expenses. (And for simplicity, let's assume the balance remains $50,000 for a full year and the rate stays at 7.29%.)

To be clear, the government isn't reimbursing you for $3,645 of HELOC interest. The $3,645 deduction reduces taxable income by that amount, which would translate to about $874.80 less in federal income tax at the assumed 24% marginal rate. (Your actual tax benefit will depend on your tax situation.)

What Happens When You Use a HELOC for Both Scenarios

Many people are in a situation where they end up using HELOC money for a mix of both business and other expenses. That's where things get more complicated.

You can't treat all of the interest as business interest if only some or part of it was used for your company. It has to be allocated based on how you used the money.

Let's go back to the $50,000 HELOC draw example. This time, we'll say you used $35,000 to buy business equipment and spent the remaining $15,000 on personal expenses. Per the IRS interest-tracing rules, the $35,000 and $15,000 personal portions are treated according to their respective uses. The interest attributable to the business portion may be deductible as business interest, while the interest attributable to the personal spending generally isn't deductible.

This is why I advise my clients to avoid mixing HELOC money with their everyday personal money when they plan to use the line for business expenses. A cleaner paper trail makes it easier to show where the borrowed money actually went later. If you have or get a HELOC, you should really try to keep a record of:

The HELOC draw

Keep statements showing when you borrowed the money and how much you drew

Where the proceeds went

Consider moving business-use draws into a dedicated account rather than an account you routinely use for personal spending

The business purchase

Keep invoices, receipts, canceled checks, bank or credit card records, and other documents connecting the borrowed money to the business expense

Your allocation

If a draw has both business and personal uses, document how much went toward each rather than trying to reconstruct the split when you file your return

The Case of the Home Office

Here's a situation I've heard before that can stump some people: What if you use HELOC money to build a home office?

Technically, you're improving your home. But it's also kind of a business expense. So where would it fit? Some related costs may be treated as expenses of the business use of your home rather than ordinary personal expenses. The treatment will depend in part on whether the improvement benefits only the business portion of the home, or the entire property.

The IRS distinguishes direct expenses, which benefit only the business portion of the home, from indirect expenses, which benefit the entire home and generally must be allocated between business and personal use.

How Your Business Structure Affects the Deduction

The legal structure of your business will affect how you report potentially deductible HELOC interest. This becomes especially important with partnerships and S corporations because the HELOC is typically the owner's debt, while the business is a separate tax entity.

Sole proprietor

If you use HELOC proceeds directly in your business, deductible business interest is generally reported with the business on Schedule C (Form 1040)

Single-member LLC

A single-member LLC is generally disregarded for federal income tax purposes unless it elects corporate treatment. For an individual owner operating a business, income and deductions are therefore generally reported on Schedule C, much like a sole proprietorship

Multi-member LLC or partnership

A multi-member LLC is generally taxed as a partnership unless it elects otherwise. If the partnership itself incurs deductible business interest, that interest is generally reported on Form 1065. But a personally held HELOC used to put money into the partnership requires another step: How the owner advances the money to the entity can affect the tax treatment

S Corporation

An S corporation reports interest it incurs in its trade or business on Form 1120-S. If you personally borrow against your home and then provide the money to your S corporation, however, you shouldn't automatically treat your personal HELOC interest as interest paid by the corporation. How the transaction is structured and documented matters

What If You Borrow Personally and Give the Money to Your Business?

If a HELOC is in your name but you use the proceeds for a partnership or S corporation, how you move that money into the business matters. You might structure it as an owner loan to the business, for example, or the business might reimburse you for certain qualifying expenses. That can affect who claims a deduction and where it gets reported.

The main thing I tell business owners is not to assume that personally paying a business expense means the deduction automatically belongs on the business's tax return. Once a separate tax entity is involved, have your tax professional confirm how the transaction and any related interest should be reported.

HELOC Tax Deduction Mistakes To Avoid

Even when HELOC interest would otherwise qualify for a deduction, poor recordkeeping or claiming it under the wrong rules can create problems. Here are some of the biggest mistakes I see clients make that you should try to avoid:

Why Business Owners Work With Clarify

Clarify Capital offers HELOCs for businesses. When you're ready, my team and I can help you review your qualifications, rate quotes, or explore options. Get started and apply today.

Here's how the process works:

Step 1:Apply online

It takes about two minutes. You'll need your business's legal name, EIN, time in business, monthly revenue, requested loan amount, owner contact information, and a credit authorization.

Apply here

Step 2:Connect with a lending advisor

A U.S.-based Clarify Capital lending advisor reviews the application, runs a soft credit pull (no impact to your score), and requests 3 to 4 months of recent business bank statements.

Step 3:Get matched and funded

Clarify Capital works with 75+ vetted lenders and matches your profile with the right financing. Approvals often get a same-day offer (SBA loans can take longer).

Clarify Capital's 5.0 Trustpilot rating is the highest in the industry, and we've placed more than $1 billion across 50,000+ small-to-midsize businesses (SMBs).

Clarify matches you across 75+ vetted lenders and can get you a written offer in as quickly as 24 hours. Every applicant works with a U.S.-based lending advisor (not a chatbot or a call center) from application through financing.

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