Using a HELOC or Home Equity Loan to Buy a Business

American homeowners sit on roughly $17 trillion in collective home equity as of late 2025, with the average mortgage holder holding about $295,000 in equity and roughly $203,000 of that considered tappable (Intercontinental Exchange, Mortgage Monitor, 2025). For aspiring business buyers, that equity represents one of the fastest and lowest-cost paths to assembling the capital required to buy a business. A Home Equity Line of Credit (HELOC) or home equity loan can serve as all or part of the equity injection required by SBA 7(a) financing, letting you acquire a profitable company with no outside investors, no equity dilution, and no months-long fundraise. Current HELOC rates in the 7-8% range make the cost of capital significantly cheaper than mezzanine debt (12-18%) or the implied cost of giving away equity to search fund investors. The trade-off is real, though: your home is the collateral. This guide covers exactly how HELOCs and home equity loans work in an acquisition context, current rates and terms, SBA equity injection rules updated under SOP 50 10 8 (effective June 2025), tax deductibility, a worked example with specific numbers, and the risk framework you should apply before pledging your home.

How HELOCs and home equity loans work

Both a HELOC and a home equity loan let you borrow against the difference between your home’s appraised value and your outstanding mortgage balance. They are second-lien instruments , meaning your first mortgage stays in place and the home equity product sits behind it in priority. The critical difference is how the money is disbursed and how the interest rate behaves.

A Home Equity Line of Credit (HELOC) works like a revolving credit card secured by your house. You are approved for a maximum credit limit and can draw funds as needed during a draw period (typically 10 years), paying interest only on the outstanding balance. After the draw period ends, the loan enters a repayment phase (usually 15-20 years) during which you can no longer draw and must pay both principal and interest. HELOC rates are variable, tied to the prime rate plus a margin. As of April 2026, the national average HELOC rate is approximately 7.09%, down more than two full percentage points from the 2024 peak (Bankrate, April 2026). Bankrate senior analyst Ted Rossman projects HELOC rates to average about 7.3% for full-year 2026.

A home equity loanprovides a lump sum upfront at a fixed interest rate with predictable monthly payments over a set term (5-30 years). As of early 2026, average home equity loan rates hover around 7.56% (Bankrate, 2026). Because the rate is locked, your monthly payment never changes, a meaningful advantage when you’re also servicing acquisition debt with variable-rate components.

A cash-out refinance replaces your entire first mortgage with a new, larger mortgage and gives you the difference in cash. Rates in early 2026 average around 6.25%, which is lower than either HELOC or home equity loan rates. However, a cash-out refi carries 3-6% of the loan amount in closing costs, resets your mortgage term, and, critically, destroys any low rate you locked in during 2020-2021 (CBS News, 2026). For most acquisition-minded homeowners with a sub-4% first mortgage, a HELOC or home equity loan is the better option because it preserves that low primary rate.

HELOC vs. home equity loan vs. cash-out refi: comparison table

For most searchers with a low first-mortgage rate, a HELOC or home equity loan is the dominant choice. If you need the full amount at closing and want payment predictability while managing other variable-rate debt, a fixed-rate home equity loan has a slight edge. If you value flexibility, say you’re still negotiating final deal terms and want to draw only what you need, a HELOC gives you that optionality.

How much can you actually borrow?

Your borrowing capacity depends on three factors: your home’s appraised value, your outstanding mortgage balance, and the lender’s maximum combined loan-to-value (CLTV) ratio. Most lenders cap CLTV at 80-85% (The Mortgage Reports, 2026). A few credit unions and online lenders push to 90%, but they charge higher rates and fees.

The formula is straightforward:

Maximum HELOC = (Home value x CLTV cap) − mortgage balance

For example, if your home appraises at $600,000, you owe $300,000 on your first mortgage, and the lender allows 80% CLTV:

($600,000 x 0.80) − $300,000 = $180,000 available

At an 85% CLTV cap the number rises to $210,000, enough to cover the 10% equity injection on a business priced at $1.8-$2.1 million, depending on total project costs. Homeowners in high-value markets (where a $900,000-$1.2M home is common) can often unlock $250,000-$400,000 or more, positioning themselves to pursue larger acquisition targets in the $2M-$4M range.

Qualification requirements also matter. Most lenders look for a credit score of 680 or above for approval, with 720+ needed for the most competitive rates. Your debt-to-income (DTI) ratio, including the projected HELOC payment, generally must stay below 43%. And here is a timing detail that catches many searchers off guard: apply for the HELOC while you are still employed. Lenders underwrite based on stable W-2 income. If you quit your job to search full-time before securing the line of credit, your approval odds drop significantly.

Using a HELOC as equity injection for SBA loans

This is where most acquisition buyers deploy home equity: as the buyer’s equity injection in an SBA 7(a) deal. The SBA requires a minimum 10% equity injection of total project costs for any change of ownership (SBA SOP 50 10 8, effective June 1, 2025). In a typical acquisition, the deal structure looks like this:

• SBA 7(a) loan: 80-90% of total project costs
• Buyer’s equity injection: 10% minimum (HELOC, savings, or other acceptable sources)
• Seller financing: Optional, but seller notes on full standby can cover up to 50% of the required injection under the 2025 SOP rules

Under the updated SOP 50 10 8 guidance, a HELOC draw is an acceptable equity injection source, but only if the borrower demonstrates sufficient income from outside the acquired business to service the HELOC debt(Sperita Capital; Starfield & Smith, 2025). This is a critical detail that trips up buyers. The SBA’s logic is that the business’s cash flow should be reserved for servicing the SBA loan, not diverted to repay your personal HELOC. Acceptable outside income sources include:

• A spouse’s salary or employment income
• Rental income from investment properties
• Passive income (dividends, trusts, pensions)
• A part-time consulting income stream the buyer will maintain

If you are single with no outside income and plan to draw 100% of your compensation from the acquired business, an SBA lender may reject HELOC proceeds as equity. In that case, you would need to draw from savings, use a ROBS (Rollover for Business Startups) structure to tap retirement funds, or negotiate a larger seller note on full standby. Also note: under SOP 50 10 8, seller notes that count toward the equity injection cannot exceed 50% of the required amount and must be on full standby (no principal or interest payments) for the life of the SBA loan (Windsor Advantage, 2025).

Confirm HELOC eligibility with your specific SBA lender early in the process. Individual lenders layer their own credit policies on top of SBA rules, and some are more conservative than the SOP minimum.

Worked example: $1.5M acquisition with a HELOC equity injection

Let’s walk through a concrete deal to show how the numbers flow. Assume you are buying a profitable HVAC service company listed at $1.5M (roughly 3.5x adjusted EBITDA of $430,000). Total project costs including the purchase price, working capital, closing fees, and SBA guarantee fee, come to $1.62M.

Capital stack:

• SBA 7(a) loan: $1.3M (80% of project costs) at prime + 2.75% (currently ~7.25%), 10-year term, fully amortizing. Monthly payment: approximately $15,300.
• Seller note on full standby: $81,000 (5% of project costs; 50% of the required injection). No payments for the life of the SBA loan.
• HELOC equity injection:$81,000 (the remaining 5% of the equity injection). Drawn from a $180,000 HELOC at 7.09% variable. Interest-only payment during draw period: ~$479/month. Your spouse earns $95,000/year, which satisfies the SBA’s outside-income requirement.
• Cash from savings: $158,000 (covers remaining project costs including working capital, closing fees, SBA guarantee fee).

Post-closing cash flow picture:

The business generates $430,000 in adjusted EBITDA. After $183,600 in annual SBA debt service, you have roughly $246,400 remaining for owner compensation, taxes, HELOC repayment, and reinvestment. If you allocate $30,000/year toward aggressively paying down the HELOC (which is comfortable given the spouse’s income covering the minimum payments), the $81,000 HELOC balance is retired in about 2.8 years. Total interest paid on the HELOC over that period: approximately $8,400.

Compare that $8,400 cost to what you would pay if you raised $162,000 from search fund investors who took 25-30% of equity , which, on a business generating $430,000 in EBITDA, could represent $1M+ in value over a 5-7 year hold. The HELOC is dramatically cheaper in total cost of capital for a deal of this size.

Tax deductibility of HELOC interest

The tax treatment of HELOC interest depends entirely on how you use the borrowed funds, not on the fact that the loan is secured by your home. This is governed by what the IRS calls interest tracing rules (IRS Publication 535; The Real Estate CPA, 2025).

Under the Tax Cuts and Jobs Act (TCJA) of 2017, HELOC interest is deductible as mortgage interest on Schedule A only if the proceeds are used to “buy, build, or substantially improve” the home securing the loan, subject to a $750,000 cap on total acquisition debt ($375,000 for married filing separately). Using HELOC funds to buy a business does not qualify under this provision.

However, when you use HELOC proceeds for a business purpose , specifically, as an equity investment in a trade or business you materially participate in, the interest may be deductible as business interest under IRC Section 163(a), traced to the business use of the proceeds. In practice, this means you would deduct the interest on Schedule C or Schedule E (depending on entity structure), not on Schedule A. The deduction is subject to the Section 163(j) business interest limitation if your business has average annual gross receipts exceeding $30 million, but for nearly all small-business acquisitions this threshold is irrelevant.

The critical step is maintaining clean documentation: deposit the HELOC draw directly into a separate account used exclusively for the business acquisition. Do not comingle with personal funds. Keep a paper trail showing the direct connection between the HELOC draw and the equity injection into the business. Consult a CPA experienced in acquisition tax planning to ensure you structure the deduction correctly from day one.

Risks: your home is on the line

There is no way to sugarcoat this. When you take a HELOC to fund a business acquisition, you are double-using your personal balance sheet. Your home secures the HELOC. The business secures the SBA loan. And you personally guarantee the SBA loan. If the business fails and you cannot cover the SBA loan, SBA debt service, and HELOC payments simultaneously, you face the possibility of losing both the business and your home. The specific risks include:

• Foreclosure risk: If you default on the HELOC, the lender can force a sale of your home. Even if the business is doing fine, a personal cash-flow crunch (medical emergency, job loss for your spouse) can trigger a HELOC default.
• Variable-rate exposure: HELOC rates move with the prime rate. While rates have declined from their 2024 peak, a reversal in Fed policy could push rates back above 9%. Build sensitivity models assuming a 200+ basis-point rate increase.
• Double use on a single household: You may be carrying a first mortgage, a HELOC, personal guarantee on an SBA loan, and possibly a car loan and student debt. If the acquired business hits a rough quarter and distributions drop, all these obligations still come due.
• Spousal and family impact: Both spouses typically must sign off on a HELOC since it encumbers the family home. Have an explicit, honest conversation about worst-case scenarios before proceeding. The decision to pledge the family home should be a joint one with full information.
• Reduced borrowing capacity: The HELOC balance counts against your personal DTI ratio, which may constrain your ability to borrow for other needs (car, emergency credit, investment property) during the critical first years of business ownership.
• Appraisal and market risk: If home values decline after you take the HELOC, your lender may freeze or reduce your credit line. In Q3 2025, the number of underwater homes increased 21% year-over-year to 1.2 million (CoreLogic, 2025). While this risk is concentrated in specific markets, it is not hypothetical.

A prudent risk framework: only use a HELOC when the financial due diligence on the target business confirms stable, recurring cash flows with at least a 1.5x debt-service coverage ratio on all obligations (SBA debt + HELOC payments + personal living expenses). If the business has volatile revenue, customer concentration above 20%, or cyclical exposure, financing the equity injection through a HELOC adds meaningful risk you should quantify before committing.

When a HELOC makes sense, and when it does not

A HELOC or home equity loan is a strong financing tool under specific conditions. Use this decision framework:

A HELOC is a good fit when:

• You have significant tappable equity ($150K+) and will use only a portion of it, preserving a cushion
• Your household has a second income source (spouse’s salary, rental income, pension) to cover HELOC payments independent of the business
• The target business has stable, recurring revenue and a debt-service coverage ratio above 1.5x on all combined obligations
• You plan to pay off the HELOC within 2-4 years using business distributions
• You want 100% ownership with no equity dilution and no outside investor governance
• The total HELOC amount is under $200,000, keeping the monthly interest-only payment manageable (under $1,200/month at current rates)

A HELOC is a poor fit when:

• You are single-income with no outside source to service the HELOC (SBA may reject it as equity injection)
• You would need to draw more than 75% of your available equity, leaving no safety margin
• The target business has lumpy revenue, customer concentration, or cyclical risk that could disrupt cash flow in year one
• You are already highly used personally (high DTI, existing second mortgage, significant consumer debt)
• Your home is in a market with flat or declining values, increasing the risk of HELOC freeze or reduction
• You and your spouse are not fully aligned on the risk of encumbering the family home

For deals where a HELOC is not the right choice, consider alternatives: a ROBS structure taps retirement assets without putting your home at risk; a structured capital stack with a larger seller note on standby reduces the cash equity needed; or a self-funded search with co-investors splits the risk across multiple parties.

Frequently asked questions

Can I use a HELOC as the entire equity injection for an SBA loan?

Yes, a HELOC can cover 100% of your equity injection as long as you meet the SBA’s outside-income requirement. Under SOP 50 10 8 (June 2025), the borrower must demonstrate sufficient income from sources other than the acquired business to service the HELOC. If your spouse earns enough to cover the HELOC payments, or you have rental income or other passive cash flows, most SBA lenders will accept it. If you have no outside income, you may need to pair the HELOC with savings or negotiate a seller note on full standby to cover a portion.

Is HELOC interest tax-deductible when used to buy a business?

It is generally deductible, but not as mortgage interest. Under IRS interest tracing rules, interest on HELOC funds used for a trade or business you materially participate in may be deducted as business interest on Schedule C or Schedule E rather than as itemized mortgage interest on Schedule A (IRS Publication 535). The key is documenting the business use of proceeds: deposit HELOC draws into a dedicated account, keep a clear audit trail, and work with a CPA to classify the deduction correctly.

How long does it take to get approved for a HELOC?

Most HELOCs close in 2-6 weeks from application, depending on the lender and whether a full appraisal is required. Some online lenders and credit unions offer expedited timelines of 10-14 business days using automated valuation models (AVMs) instead of in-person appraisals. Apply while you are still employed with a W-2 income, underwriting becomes significantly harder once you leave your job to search full-time or operate the business.

What happens to my HELOC if home values decline?

If your home’s value drops, the lender may freeze your HELOC (preventing further draws) or reduce your credit limit. In a severe decline, the lender could demand repayment on drawn amounts. This is why you should draw the funds you need before closing the acquisition rather than relying on future draws. Once the funds are drawn and deposited, the lender cannot claw back the cash, though your repayment obligation remains.

Should I choose a HELOC or a home equity loan for an acquisition?

For most acquisition buyers, a fixed-rate home equity loan is the slightly safer choice because your payment is predictable while you are also managing variable-rate SBA debt. However, a HELOC costs less upfront (minimal closing costs vs. 2-5% for a home equity loan), gives you flexibility to draw only what you need, and can save money if you pay it down aggressively in the first few years. If you plan to repay within 2-3 years using business cash flow, a HELOC’s variable rate is less of a concern. If repayment will take 5+ years, the certainty of a fixed rate is worth the higher closing costs.

Sources

• Bankrate, “Current HELOC Rates” (April 2026)
• Intercontinental Exchange, “ICE Mortgage Monitor: Home Equity Statistics” (2025)
• SBA, “Standard Operating Procedure 50 10 8” , Equity Injection Requirements (effective June 1, 2025)
• Sperita Capital, “6 Equity Sources that Meet the SBA’s Equity Injection Requirements” (2025)
• Starfield & Smith, “Best Practices: Equity Injection Requirements Under SOP 50 10 8” (2025)
• Windsor Advantage, “Updated SBA Equity Injection Rules: SOP 50 10 8” (2025)
• IRS, “Publication 535: Business Expenses, Interest”; The Real Estate CPA, “Interest Tracing Explained” (2025)
• CoreLogic, “U.S. Home Equity Report” (Q3 2025)
• CBS News, “HELOCs vs. Cash-Out Refinancing: Which One Will Be Better in 2026?” (2026)
• The Mortgage Reports, “Maximum HELOC Amount and Limits” (2026)