Both tools turn home equity into cash, but they work in opposite ways. A cash-out refinance replaces your entire mortgage with one bigger loan at today's rate. A HELOC leaves your mortgage untouched and stacks a smaller, variable-rate line on top. Which one costs less is almost entirely a function of one number: the gap between the rate you have and the rate you'd get.
The honest answer is "it depends on your rate," so let's make it concrete. Say your home is worth $450,000, you owe $300,000 at 4.25% with 26 years left, and you want $50,000 for a renovation. You get two offers: a 20-year HELOC at 8.5% with $500 in costs, or a 30-year cash-out refinance at 6.75% with 2% closing costs.
The refinance looks simple: $350,000 at 6.75% for 30 years is a $2,270 monthly payment. The HELOC path keeps your $1,590 mortgage payment and adds $434 for the $50,000 line, so $2,024 a month all in. Right away the HELOC path is $246 a month cheaper, which surprises people because its rate is higher. The trick is that 8.5% only applies to $50,000. The refinance applies 6.75% to the whole $350,000, including the $300,000 you were happily paying 4.25% on.
Blend the HELOC path and you're effectively paying about 4.86% on all $350,000 of debt, versus 6.75% flat on the refinance. Over five years that gap compounds into $80,802 of financing cost for the HELOC path versus $121,771 for the refinance, and the HELOC path ends owing about $19,700 less. Run your own numbers with our HELOC vs cash-out refi calculator; the verdict can flip when rates move.
You take a new mortgage for more than you currently owe and pocket the difference. The new loan pays off the old one, so your previous rate disappears completely. In a high-rate environment that's the catch: you're refinancing a big balance to access a comparatively small amount of cash.
What you get in exchange is simplicity. One fixed rate, one payment, closing costs commonly 2% to 6% of the loan, and terms of 15 to 30 years. If your current rate is at or above today's rates anyway, this is often the cleanest move, because you improve your rate and take cash in the same transaction. If you're unsure whether the timing works, the refinance break-even calculator shows how long lower payments take to repay your closing costs.
A home equity line of credit is a revolving line secured by your house, usually with a 10-year draw period where you can borrow and repay repeatedly, followed by a 10 to 20 year repayment period. During the draw you often pay interest only on what you've drawn, which keeps early payments low. Rates float, typically at the prime rate plus or minus a margin, so payments move when the Fed does.
Opening costs are usually small, sometimes $0, though many lenders charge a fee if you close the line within the first two or three years. To see what the payment actually looks like through both phases, use the HELOC payment calculator.
| HELOC | Cash-Out Refinance | |
|---|---|---|
| Typical upfront cost | $0-$500 | 2%-6% of the new loan |
| On a $350,000 total debt | $0-$500 | $7,000-$21,000 |
| Early-closure penalty | Sometimes (years 1-3) | Rare on conventional loans |
| Rolled into balance? | Uncommon | Common |
Those refinance costs are part of why the HELOC path won our example by five figures. Seven grand of closing costs is a lot to hand over for the privilege of raising the rate on $300,000 you already control at 4.25%.
Most lenders cap combined loan-to-value at 80% to 90%. On the $450,000 home above, an 80% cap means total debt of $360,000, so $60,000 of borrowing room over the $300,000 balance; a 90% cap allows $105,000. Cash-out conventional refinances typically stop at 80% LTV, while HELOCs commonly reach 85% and a handful go to 90% or higher at steeper rates. Check how much room you actually have with the home equity calculator before you shop offers.
And the HELOC tends to win when you have a rate worth protecting, need a modest amount relative to your balance, want the option to draw again later, or expect to pay the money back fairly fast. Plenty of borrowers with 3-4% mortgages should never touch a cash-out refinance at 6.75% for a $50,000 project. The math above is the reason why.
Usually yes when your current mortgage rate is far below today's refinance rates, because the HELOC's higher rate only touches the new borrowing. In a typical example, keeping a $300,000 loan at 4.25% and adding a $50,000 HELOC at 8.5% beat a $350,000 refinance at 6.75% by about $41,000 over five years. When your current rate is at or above market, refinancing everything tends to win.
Yes. A HELOC is a second-position loan that sits behind your first mortgage, which is exactly why people use it to borrow against equity without disturbing a low first-lien rate. The HELOC lender only gets repaid after the first mortgage if the home is foreclosed, which is part of why HELOC rates run higher.
Both involve a hard inquiry and a new account, so the short-term impact is similar. A refinance replaces your seasoned mortgage with a new loan, which can shorten your average account age a bit more, while a HELOC adds a new tradeline alongside the old one. The differences are small next to payment affordability.
Most lenders want the combined loan-to-value ratio at 80% to 90% after the new borrowing. That means at least 10% to 20% equity remaining after you take the cash. HELOCs at 85% CLTV are common and a few go higher; cash-out conventional refinances typically stop at 80%.
Enter your balance, rate, and cash needed. See payments, blended rate, and total 5-year cost for both options side by side.
HELOC vs Cash-Out Refi Calculator →