Say a homeowner has $180,000 in equity sitting in their house and a kitchen that hasn’t been touched since 2003. The cabinets work fine. The layout doesn’t. A full remodel could run $40,000 to $80,000 depending on scope, and paying cash for that isn’t realistic for most people. This is exactly the situation a home equity line of credit was built for.
A HELOC for home improvement is a revolving line of credit secured by your home’s equity, letting you draw money as a renovation unfolds and pay interest only on what you’ve actually used. As of mid-August 2026, the national average HELOC rate is 7.30%, according to Bankrate’s survey of major lenders, which is meaningfully cheaper than a personal loan or credit card for the same purpose. That single fact is why HELOCs remain one of the most common ways homeowners fund renovations, but the details underneath that headline rate matter more than most articles on this topic let on.
How the borrowing actually works
A HELOC has two distinct phases, and confusing them is where a lot of borrowers get into trouble later.
During the draw period, typically 5 to 10 years, you can borrow up to your approved credit limit, repay it, and borrow again, similar to a credit card. Most lenders only require interest-only payments during this phase, which keeps monthly costs low while a project is actively underway. Once the draw period ends, the loan moves into the repayment period, often 10 to 20 years, where you can no longer draw new funds and your payments shift to include both principal and interest.
That transition is the single most misunderstood part of a HELOC for home improvement. A homeowner making $280 monthly interest-only payments on a $50,000 balance during the draw period can see that payment jump to $450 or more once principal repayment kicks in, even with no change in the interest rate. It’s not a trick or a hidden fee. It’s just the natural shape of how these products are structured, and it catches people off guard because the draw-period payment feels so manageable that they forget it was never the real number.
What it actually costs right now
Rates on a home equity line of credit have come down noticeably from their 2023 peak, when averages pushed close to 9%. As of August 2026, sources land in a fairly tight band: Bankrate reports a national average of 7.30%, Experian cites 7.50% based on Curinos data, and LendingTree’s customer-offered average sits closer to 8.34%. The spread between those numbers is a useful reminder that a “good rate” depends heavily on your credit profile, your combined loan-to-value ratio, and which lenders you actually shop, not just the headline average reported in the news.
Beyond the interest rate, expect closing costs of roughly 2% to 5% of your credit line, covering appraisal, title search, and origination fees, though a growing number of lenders now waive these if you keep the line open for a minimum period. Most lenders cap your combined loan-to-value ratio, meaning your mortgage balance plus your new HELOC, at 80% to 85% of your home’s current appraised value, not its projected value after the renovation.
Here’s a concrete example. A home appraised at $400,000 with $150,000 remaining on the mortgage has $250,000 in equity. At an 80% combined loan-to-value cap, the lender allows total borrowing of $320,000 ($400,000 × 0.80). Subtract the $150,000 mortgage balance, and the available HELOC credit line comes out to $170,000, well beyond what most renovation projects actually need, though your specific limit will depend on income, credit score, and the lender’s own risk appetite.
The tax deduction most articles get half right
Interest on a home equity line of credit is tax-deductible, but only under a condition that a surprising number of guides gloss over: the funds must be used to “buy, build, or substantially improve” the home that secures the loan. A HELOC used to pay off credit card debt or fund a vacation doesn’t qualify, even though the loan itself works identically either way.
Under current IRS rules, joint filers can deduct interest on up to $750,000 of combined qualified mortgage debt, while single filers or those married filing separately are capped at $375,000. You also have to itemize deductions rather than take the standard deduction to benefit at all, which, given how high the standard deduction has climbed in recent years, means a meaningful share of homeowners technically qualify for the deduction but never actually see a tax benefit from it. It’s worth running the numbers with a tax preparer before assuming the deduction changes your math.
Which renovations actually earn the money back
This is the part most home-improvement-loan articles skip entirely, and it matters more than almost anything else discussed here: not all renovations return anything close to what they cost.
According to Zonda’s 2025 Cost vs. Value report, which tracks 28 project types across 115 U.S. markets, the highest-returning projects in 2025 were almost all exterior and curb-appeal focused, not the big-ticket interior remodels people typically borrow for.
| Project | Cost recouped at resale |
|---|---|
| Garage door replacement | 268% |
| Steel entry door replacement | 216% |
| Manufactured stone veneer | 208% |
| Minor kitchen remodel (midrange) | 113% |
| Bathroom remodel (midrange) | 80% |
| Major kitchen remodel (midrange) | 51% |
| Upscale bathroom remodel | 42% |
| Primary suite addition | well under 50% |
The pattern is consistent year over year: smaller, targeted exterior updates outperform large discretionary interior projects almost every time. That doesn’t mean a major kitchen remodel is a bad idea. If you plan to live in the home for another decade, the daily value of a kitchen you actually enjoy cooking in can outweigh a lower resale return. But if the renovation is being justified primarily as an investment, these numbers deserve a hard look before signing loan paperwork, not after.
Where the real risk actually lives
A HELOC’s biggest risk isn’t the interest rate. It’s the variable rate itself combined with the fact that your home is the collateral. Because most HELOCs carry adjustable rates tied to the prime rate, your payment can rise even if you never draw another dollar, simply because the underlying rate environment shifted. And because the loan is secured by your house, missed payments carry a foreclosure risk that a personal loan or credit card simply doesn’t.
There’s also a subtler risk worth naming plainly: it’s easy to keep drawing from an open line for things that aren’t the original renovation, since the money is sitting there and access feels frictionless. A HELOC opened for a $60,000 kitchen remodel that slowly becomes the source for a used car, a family vacation, and a few unplanned expenses is a common enough pattern that it’s worth setting a personal rule about what the line is and isn’t for before you ever draw the first dollar.
HELOC vs. the alternatives, briefly
A home equity loan gives you a fixed lump sum at a fixed rate, which suits a project with a known total cost, like a $45,000 bathroom gut renovation with a signed contractor bid in hand. A HELOC suits projects with uncertain or phased costs better, since you’re not paying interest on money you haven’t spent yet.
Personal loans skip the home-as-collateral risk entirely and fund faster, sometimes the same day, but average rates run well above 12%, more than four to five percentage points higher than a typical HELOC as of mid-2026. They tend to make more sense for smaller projects under roughly $20,000, where the interest rate gap matters less in absolute dollars and the speed and lack of collateral risk matter more.
A cash-out refinance replaces your entire mortgage, which only makes sense if current mortgage rates are close to or below what you’re already paying; refinancing out of a low fixed rate from 2020 or 2021 to fund a $30,000 renovation is rarely worth the trade-off.
Frequently asked questions
Can I use a HELOC for anything other than home improvement? Yes, a HELOC can fund almost any expense, but only renovation-related use preserves the mortgage interest tax deduction under current IRS rules, so the purpose matters for your taxes even if the lender doesn’t restrict it.
How much can I actually borrow? Most lenders cap combined borrowing at 80% to 85% of your home’s appraised value, minus what you still owe on your mortgage. A home with substantial equity and a low remaining mortgage balance will qualify for a larger line.
Is a HELOC rate fixed or variable? Almost all HELOCs carry variable rates tied to the prime rate, meaning your payment can change over the life of the loan even if you don’t draw additional funds, unlike a fixed-rate home equity loan.
What happens if home values drop after I open a HELOC? Your available credit limit is generally set at origination and typically doesn’t shrink automatically, but a significant home value decline can affect your ability to refinance or draw additional funds later, and in some cases lenders can freeze or reduce an existing line.
Does a HELOC affect my ability to sell my home? Any outstanding HELOC balance must be paid off at closing from your sale proceeds, same as your primary mortgage, so it reduces your net proceeds but doesn’t otherwise block a sale.
The one number worth calculating before you apply
Most guides stop at “compare rates and shop lenders,” which is true but incomplete. Before applying, calculate your specific project’s expected resale return using the Cost vs. Value data above, then compare that percentage against your all-in borrowing cost, including the closing fees and the realistic payment once the repayment period begins, not just the interest-only number you’ll see in the first year. A renovation earning back 200% at resale easily justifies borrowing at 7.3%. One earning back 45% needs to be justified by how much you’ll enjoy living with it, not by the math on a lender’s rate sheet, and being honest with yourself about which category your project falls into before you sign is worth more than any rate comparison shopping you’ll do afterward.