If you've built up equity in your home, you have two main ways to borrow against it: a home equity loan or a home equity line of credit (HELOC). They sound almost identical, and lenders often mention them in the same breath — but they behave very differently month to month. One hands you a fixed lump sum; the other opens a flexible, revolving line you draw from as you go. Picking the wrong one can mean paying interest on money you didn't need yet, or scrambling for cash you set aside but can't easily reach. This guide lays out the real differences, the rates, how much you can actually borrow, and which one fits which situation. Want to test the numbers as you read? Open the HELOC calculator in another tab.
Lump sum vs. revolving line — the core difference
This single distinction drives almost everything else. A home equity loan works like a second mortgage: you borrow a set amount once, receive it all at closing, and repay it in equal monthly installments over a fixed term. From day one you're paying principal and interest on the full balance.
A HELOC is a revolving line of credit, more like a credit card secured by your house. The lender approves a maximum, and during the draw period (commonly 10 years) you borrow only what you need, when you need it — paying interest just on the amount you've actually drawn. After the draw period ends, you enter a repayment period (often 20 years) where you pay back the outstanding balance and can no longer borrow more.
The practical takeaway: if you know exactly how much you need and need it all now — say, a single $40,000 kitchen remodel with a signed contract — the lump-sum home equity loan is clean and predictable. If your costs will trickle out over months or you're not sure of the total — a phased renovation, tuition each semester, or a cushion for a business — the HELOC's draw-as-you-go flexibility usually wins.
Fixed vs. variable rate — payment certainty vs. flexibility
A home equity loan carries a fixed rate: your interest rate and monthly payment are locked for the life of the loan, so you can budget to the dollar. A HELOC almost always carries a variable rate tied to an index such as the prime rate. When rates rise, your HELOC payment rises with them; when they fall, it eases.
As of mid-2026, fixed home equity loans average roughly 7.86%, while HELOCs sit around 7.25%. The HELOC looks cheaper on paper, but that number can move — so the comparison isn't just "which rate is lower today," it's "how much rate risk am I comfortable carrying." Some lenders offer a fixed-rate conversion option that lets you lock a portion of a HELOC balance, blending flexibility with a bit of certainty.
How much can you borrow? The 80–85% rule
Both products are capped by your home's equity. Lenders look at your combined loan-to-value (CLTV) — every loan against the home divided by its appraised value — and most cap it at about 80% to 85%. Your existing first mortgage counts toward that limit, so the equity you can tap is what's left underneath the cap.
Here's the math on a $400,000 home with a $250,000 mortgage:
| Amount | |
|---|---|
| Home value | $400,000 |
| Lender CLTV cap (85%) | $340,000 |
| Less: first mortgage owed | −$250,000 |
| Available to borrow | ~$90,000 |
A more conservative 80% cap would leave about $70,000. Your actual limit also depends on your credit score, income, and debt — but the loan-to-value ceiling is the hard wall. The amount of home equity you've built (value minus what you owe) is what makes any of this possible in the first place.
When each one makes sense
Choose a home equity loan when:
- You have a single, known, one-time expense — debt consolidation, one big renovation, a medical bill.
- You want a fixed payment you can budget around for years.
- You'd rather not risk a rising rate, even if the starting rate is a touch higher.
Choose a HELOC when:
- Your costs are spread out or uncertain — a multi-stage remodel, ongoing tuition, an emergency buffer.
- You want to pay interest only on what you actually use, not the full approval.
- You're comfortable with a variable rate and the flexibility is worth it.
A common smart move: use a HELOC as a standby line you only tap when needed, the way some homeowners accelerate a mortgage payoff by routing income through the line. That's exactly the strategy our HELOC calculator is built to model.
Don't forget the costs
Both options can carry closing costs — appraisal, title, and origination fees that often run 2%–5% of the amount borrowed, though many lenders waive or reduce them on home equity products. HELOCs sometimes add an annual fee or an inactivity fee, and a few charge an early-closure fee if you pay off and close the line within the first few years. Read the fee schedule before you sign, and fold those costs into your comparison — a slightly lower rate isn't a deal if fees erase the savings.
One more shared trait worth taking seriously: both put your home up as collateral. Miss enough payments and the lender can foreclose. That's the trade-off for rates far lower than credit cards or personal loans — borrow against the house only for things that build value or genuinely can't wait.
Not sure how much equity you can tap or what the payment would be? Run your numbers in the HELOC calculator — enter your home value, mortgage balance, and rate to see your available credit line and estimated payment.
The bottom line
The choice comes down to two questions: do you need the money all at once or over time, and do you want a fixed payment or a flexible one? A home equity loan is the lump-sum, fixed-rate, set-it-and-forget-it option for a known cost. A HELOC is the revolving, variable-rate, pay-for-what-you-use option for spread-out or uncertain needs. Both are capped at roughly 80–85% of your home's value, and both use your home as collateral — so borrow with a clear purpose. Run your figures in the HELOC calculator before you talk to a lender, and you'll know exactly what you're asking for.
Frequently Asked Questions
What is the main difference between a HELOC and a home equity loan?
A home equity loan gives you a single lump sum at a fixed interest rate, repaid in equal monthly payments — like a second mortgage. A HELOC is a revolving line of credit with a variable rate that you draw from as needed during a draw period, paying interest only on what you actually borrow. Choose the lump sum for a one-time, known cost; choose the line for ongoing or uncertain costs.
How much can I borrow with a HELOC or home equity loan?
Most lenders let you borrow up to a combined loan-to-value (CLTV) of about 80% to 85% of your home's value, including your first mortgage. On a $400,000 home with a $250,000 mortgage, an 85% limit means roughly $340,000 total minus the $250,000 you owe — about $90,000 of available equity. Run your own numbers in the HELOC calculator.
Is a HELOC rate fixed or variable?
A HELOC almost always carries a variable rate tied to an index like the prime rate, so your payment can rise or fall over time. A home equity loan is fixed for the life of the loan, so the payment never changes. Some lenders offer a fixed-rate conversion option on a HELOC that lets you lock part of the balance.
Which is cheaper, a HELOC or a home equity loan?
It depends on rates and how you borrow. As of mid-2026, fixed home equity loans average around 7.86% and HELOCs around 7.25%, but the HELOC rate can move. If you only need part of the money at a time, a HELOC can cost less because you pay interest only on what you draw. If you need the full amount up front and want payment certainty, a fixed home equity loan is often the safer value.
This article is provided for educational purposes only and does not constitute financial, legal, or tax advice. Rates, fees, and lending terms vary by lender and change over time — confirm current terms with a licensed professional before borrowing against your home.