The Homebuyer’s Corner
HELOC vs Cash-Out Refinance: Which Fits?
Written by Armando Novelo, NMLS 237243, a mortgage loan officer in West Covina with over 20 years of experience helping Southern California buyers.
Choosing between a HELOC and a cash-out refinance usually comes down to one question: does it cost less to keep your current first mortgage and add a line of credit behind it, or to replace the whole mortgage with one new, bigger loan?
I answer that by comparing the total interest each option would cost, not just the interest rate on each one.
A lot of homeowners are sitting on a low first mortgage rate and real equity. Then life asks for cash. An ADU, a remodel, debt that's getting heavy. The question I hear is always the same: "Can I get the money without giving up my rate?"
Sometimes yes. Sometimes holding on to that rate costs more than letting it go.
How Did Two Real Clients Get Opposite Answers?
Two of my clients asked me the same question and got opposite answers. It came down to how much new money each one needed compared to what they already owed.
One client called me wanting to build an ADU. Their first mortgage was about $600,000 at 2.5%, and they needed about $100,000 to finish the project.
Every 1% of rate on $600,000 is about $6,000 a year in interest. A cash-out refinance would have moved the whole $600,000 off 2.5% just to get $100,000.
For that client, a HELOC made more sense.
Another client in Azusa had a $180,000 mortgage at 2.875% and needed $220,000 to pay off debt. The options at the time were a HELOC at 11% or refinancing the whole thing into one loan at 6.5%.
Here is a rough look at one year of interest. It leaves out closing costs and principal paydown, and it assumes the HELOC rate stayed at 11%.
Keeping the 2.875% loan costs about $5,175 a year. The HELOC adds about $24,200, for a total of about $29,375. One $400,000 loan at 6.5% is about $26,000.
Blended together, the "low rate" option worked out to about 7.3%.
That is rough math, so just don't hold me to it. The real total depends on how long each loan stays on the books, so I ran the actual terms.
For that client, based on the actual terms we compared, the refinance produced the lower projected interest cost.
Those rates were what each client was looking at then. They are an illustration, not a quote, and today's numbers for your file could be very different.
How Do a HELOC and a Cash-Out Refinance Work?
A HELOC adds a second loan behind your current mortgage, and a cash-out refinance replaces your current mortgage with a new, larger one.
With a HELOC, your first mortgage stays exactly as it is. You get a line of credit against your equity and borrow from it as you need it.
With a cash-out refinance, the new loan pays off your old first mortgage and you receive the difference in cash. Your old rate and terms go away, and you have one new loan.
Both options borrow against your equity, which is your home's value minus what you owe. I walk through how that number is figured in What Is Home Equity and How Does It Work When You Refinance?
If the refinance side is the one you want to understand first, my broader guide is Why Do People Refinance Their Mortgage?
Both options also put your home on the line. If you can't make the payments, you could lose the house. Borrow what the plan actually needs.
When Does a HELOC Usually Fit Better?
A HELOC usually fits better when your first mortgage has a very low rate and the amount you need is small compared to what you already owe.
You keep the low rate on the big balance. The higher HELOC rate only applies to the new money. That was the ADU client.
The mistake to avoid is holding on to a low rate no matter what, before you run the numbers.
In Azusa, that low rate only covered $180,000. The other $220,000 would have sat at 11%.
When Does a Cash-Out Refinance Usually Fit Better?
A cash-out refinance usually fits better when you need a lot of money compared to your current balance.
If a higher HELOC rate would end up covering most of the total debt, one new loan at a lower rate can cost less interest overall. That was the Azusa client.
A refinance comes with its own closing costs because you are taking out a whole new first mortgage. Those costs belong in the comparison too. I break them down in What Are Closing Costs in California and How Much Are They?
Zoom out. Compare the full cost of both paths, then decide.
Why Can a HELOC Payment Change?
Most HELOCs have a variable rate, so the payment can move as rates move.
Some lenders offer a fixed rate or let you convert part of the balance to a fixed rate. The Consumer Financial Protection Bureau notes that the fixed rate is usually higher but more predictable.
The other thing people don't realize until they're in it is the draw period.
A HELOC usually lets you borrow during a draw period, and then the line closes and the repayment period starts. The CFPB notes that payments are often significantly higher once repayment begins. How long each period lasts depends on the lender and the plan.
The CFPB also notes that a lender can freeze or reduce your line if your home's value drops significantly or your financial circumstances change.
So a HELOC is not money you can count on being there forever.
If fixed versus variable is new territory, I explain the tradeoff in Fixed Rate vs. Adjustable Rate Mortgages in California.
How Much Can You Borrow With a Cash-Out Refinance?
On a one-unit home you live in, conventional and FHA cash-out refinances generally top out at 80% of the home's value.
Fannie Mae and Freddie Mac both cap a conventional cash-out refinance on a one-unit primary residence at 80% loan-to-value.
FHA also caps cash-out refinancing at 80% loan-to-value. At least one borrower generally must have owned and occupied the property as their principal residence for the 12 months before the FHA case number is assigned. FHA has limited exceptions, including certain inherited properties.
VA rules are different. VA cash-out refinancing can allow financing up to 100% of the home's VA reasonable value, subject to VA eligibility, program requirements, and lender limits.
Timing rules apply too.
For a conventional cash-out refinance, Fannie Mae and Freddie Mac generally require the first mortgage being paid off to be at least 12 months old, with certain exceptions. A VA-to-VA cash-out refinance has its own seasoning requirements.
I cover refinance timing in How Soon Can You Refinance After Buying a House?
HELOC limits are set by each lender, so they vary.
Meeting a program's maximum also does not mean you qualify. Your credit, income, debts, property value, equity and the lender's underwriting still have to work.
HELOC and Cash-Out Quick Answers
Is HELOC or cash-out refinance interest tax deductible?
It depends on how you use the money and your tax situation.
IRS Publication 936 explains that interest on home equity borrowing generally depends on how the proceeds are used and whether the other requirements for the home mortgage interest deduction are met.
Talk to your tax professional before counting on a deduction.
Can I Have a HELOC and a Cash-Out Refinance at the Same Time?
A cash-out refinance can pay off an existing HELOC as part of the new loan.
Whether you can add or keep another line afterward depends on the lender, your equity, the lien structure and your qualification.
Build My Path Home
Not sure which option fits your home and your goals? Start with my quick questionnaire, and if you're ready, pick a time to talk through your numbers with me.
Date published: October 30, 26
Last reviewed: October 30, 2026
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Armando Novelo
NMLS 237243
Super Mortgage Bros
1900 W. Garvey Ave S. #100
West Covina, CA 91790
Phone: (626) 200-1838
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