Quick answer
Keep your first mortgage and add a HELOC when your current mortgage rate is meaningfully below today's refinance rates — a cash-out refinance would re-price your entire balance just to get the cash. A cash-out refinance makes sense when you'd refinance anyway (your current rate is at or above today's rates), when you need a large lump sum and want one fixed payment, or when you plan to hold the debt for 15+ years. If you're in between, compare your blended rate — it settles the question in about two minutes.
HELOC vs. cash-out refinance side by side
| Item | HELOC | Cash-out refinance |
|---|---|---|
| What it is | A second lien (line of credit) on top of your current mortgage | A new, larger first mortgage that pays off the old one |
| Your current mortgage | Stays exactly as it is — rate, term, payment | Replaced; the new rate applies to the whole balance |
| Rate type | Usually variable (prime + margin); some offer fixed-rate draws | Usually fixed for 15–30 years |
| Interest charged on | Only what you've drawn | The entire new loan, from day one |
| Closing costs | Often low; many lenders charge little or nothing | Typically 2–5% of the new loan amount |
| How you get the money | Draw as needed during the draw period (often 10 years) | One lump sum at closing |
| Payments | Often interest-only during the draw period, then principal + interest | One fixed principal + interest payment |
| Typical max borrowing | Commonly up to 80–90% combined loan-to-value, depending on lender and credit | Usually 80% LTV for conventional and FHA; VA can go higher |
| Typical time to close | About 2–4 weeks | About 30–45 days |
| Resets your mortgage clock | No | Yes — a new 15- or 30-year term |
Terms vary by lender, state, credit, and property type. Figures on this page are illustrations, not quotes.
The blended-rate test: how to decide in two minutes
Most comparisons stop at "HELOC rates are higher than refinance rates." That's true, and it's the wrong comparison. A HELOC's higher rate applies only to the new money. A cash-out refinance's rate applies to everything you owe. The fair comparison is your blended rate — the weighted average of the mortgage you keep plus the HELOC you add:
Blended rate = (first-mortgage balance × first-mortgage rate + HELOC amount × HELOC rate) ÷ total debt
If the blended rate is lower than the cash-out refinance rate, the HELOC is cheaper on interest — and you also skip the refinance closing costs. If the cash-out rate is lower, the refinance may win, but only if the interest savings pay back its closing costs within the time you'll keep the loan.
Example 1: low first-mortgage rate (the HELOC wins)
You owe $300,000 at 3.5% and need $60,000. Using example rates of 7.0% for a cash-out refinance and 8.5% for a HELOC:
| Item | Keep mortgage + add HELOC | Cash-out refinance |
|---|---|---|
| First mortgage | $300,000 at 3.5% = $10,500/yr | $360,000 at 7.0% = $25,200/yr |
| New money | $60,000 at 8.5% = $5,100/yr | |
| First-year interest | $15,600 | $25,200 |
| Effective rate | 4.33% blended | 7.0% |
| Closing costs (2–5%) | Usually minimal | $7,200–$18,000 |
Even though the HELOC's rate is 1.5 points higher than the refinance rate, the HELOC route costs about $9,600 less in first-year interest before counting closing costs. This is the most common situation for homeowners who bought or refinanced between 2020 and 2022.
Example 2: high first-mortgage rate (the refinance can win)
You owe $300,000 at 7.25% and need $150,000. Example rates: 6.75% for a cash-out refinance and 8.5% for a HELOC.
- HELOC route: $21,750 + $12,750 = $34,500/yr in interest, a 7.67% blended rate.
- Cash-out refinance: $450,000 at 6.75% = $30,375/yr.
The refinance saves about $4,125 a year in interest. Its closing costs (roughly $9,000–$22,500 at 2–5%) take about 2 to 5½ years to recover. If you'll keep the loan longer than that, the refinance is the better deal — and you get a fixed rate on the whole amount.
Simplified: these examples compare first-year interest only and ignore amortization, taxes, and future rate changes. Run your own numbers in the HELOC vs. cash-out calculator.
When a HELOC is the better choice
- Your first-mortgage rate is well below today's refinance rates and you don't want to give it up.
- You'll spend the money over time — a remodel paid in stages, tuition bills, a business with uneven needs — and only want to pay interest on what you use.
- You're not sure exactly how much you'll need.
- You expect to pay the money back within roughly 5–10 years.
- You want to keep closing costs low and close faster.
- You're self-employed or have non-traditional income and want to use bank statements instead of tax returns.
When a cash-out refinance is the better choice
- Your current mortgage rate is at or above today's refinance rates, so re-pricing the whole balance costs you nothing (or saves you money).
- You need a large lump sum all at once and want a fixed rate on all of it.
- You want a single monthly payment instead of two.
- You'll carry the borrowed money for 15+ years and want payment certainty.
- You want to remove someone from the mortgage (for example, after a divorce) while also pulling cash out.
Real-world scenarios
$40,000 kitchen remodel, current mortgage at 3.25%
HELOC. Refinancing a 3.25% mortgage to reach $40,000 re-prices the whole balance at today's rates. A HELOC adds the money on top and leaves the 3.25% untouched. You draw as the contractor bills you.
$200,000 for a business, current mortgage at 7.25%
Run both. At this size, a HELOC's variable rate is a real exposure, and your first-mortgage rate is high enough that a cash-out refinance at a lower rate could reduce the cost of the whole balance. The blended-rate test above decides it.
$50,000 of credit-card debt at 22%
Usually a HELOC, because of its lower closing costs and because a low first-mortgage rate stays intact. Close or freeze the cards afterward; the risk with debt consolidation is running the balances back up while the debt is now secured by your house.
$300,000 college fund for two kids over eight years
HELOC, opened early. Tuition is paid in installments. A HELOC charges interest only as each bill is paid; a cash-out refinance charges interest on all $300,000 from closing day.
$80,000 to buy out a partner or ex-spouse
It depends on the title and loan. If the departing person must come off the existing mortgage, a cash-out refinance often does both jobs at once. If they're only on title, a HELOC may be enough.
The most expensive mistake I see
Refinancing a low-rate first mortgage to get $30,000–$60,000 of cash. Trading a sub-5% rate on $400,000 to get $40,000 almost never pencils out once you run the blended rate. If someone quotes you a cash-out refinance, ask them to show the blended-rate comparison against keeping your mortgage and adding a HELOC. A good loan officer will do it without being asked.
Two other options worth knowing
Home equity investment (HEI): no monthly payment
If a monthly payment is the problem — not the rate — a home equity investment gives you cash today in exchange for a share of your home's future value, with no monthly payments and no interest. It's settled when you sell, refinance, or reach the end of the term (often 10–30 years). It can be cheaper than a HELOC if your home's value stays flat and more expensive if it rises quickly. We offer HEIs alongside HELOCs, so we can compare them for you. Read the full HEI vs. HELOC guide.
Reverse mortgage: for homeowners 62+
For homeowners 62 and older, a reverse mortgage (HECM) has no required monthly mortgage payment, qualifies largely on age and equity, and its unused line of credit grows over time. You still pay taxes, insurance, and upkeep. See our sister site for how it works.
How we'd help you decide
Because we offer HELOCs, cash-out refinances, and HEIs, we don't have a reason to push one. Start the 60-second rate check (soft credit pull) and add "compare to cash-out" in the notes. We'll lay out the blended rate, closing costs, and the total cost of each option over 5, 10, and 20 years for your numbers.
Frequently asked questions
Which is better, a HELOC or a cash-out refinance?
It depends mainly on your current mortgage rate. If it's well below today's refinance rates, keeping it and adding a HELOC is usually cheaper because the HELOC's rate applies only to the new money. If your current rate is at or above today's rates, or you want one fixed payment on a large lump sum, a cash-out refinance often wins. Compare your blended rate to the cash-out rate to decide.
Is a HELOC cheaper than a cash-out refinance?
Often, yes, especially when you have a low first-mortgage rate. HELOCs usually have much lower closing costs than a cash-out refinance (which typically costs 2-5% of the loan), and you pay interest only on what you draw. But HELOC rates are usually variable and somewhat higher, so for large amounts held many years a cash-out refinance can cost less overall.
How do I calculate a blended mortgage rate?
Multiply your first-mortgage balance by its rate, multiply the HELOC amount by the HELOC rate, add the two, and divide by the total debt. Example: $300,000 at 3.5% plus $60,000 at 8.5% equals $15,600 of annual interest on $360,000, a 4.33% blended rate. Compare that to the cash-out refinance rate.
Is a cash-out refi or HELOC faster?
A HELOC is usually faster, often closing in about 2-4 weeks, and some can close with an automated valuation instead of a full appraisal. A cash-out refinance typically takes 30-45 days because it's a full first-mortgage transaction.
Can I get a HELOC after doing a cash-out refinance?
Yes, if you still have enough equity. Many lenders allow a combined loan-to-value of up to 80-90% across the first mortgage and HELOC, so a cash-out refinance to 80% leaves little or no room. Some borrowers do a smaller cash-out refinance to improve their rate and add a HELOC later for flexibility.
Is HELOC or cash-out refinance interest tax-deductible?
Under current federal rules, interest on either is generally deductible only on the portion used to buy, build, or substantially improve the home securing the loan, and only if you itemize. Money used for debt payoff, tuition, or a business is generally not deductible as mortgage interest. Ask your tax advisor about your situation.
What if I don't want another monthly payment?
Look at a home equity investment (HEI), which provides cash with no monthly payment in exchange for a share of your home's future value, or, if you're 62 or older, a reverse mortgage. Both have tradeoffs, so compare the total cost against a HELOC before deciding.
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Keep reading
HELOC vs. Cash-Out Calculator
Plug in your balance and rates to see which costs less.
HELOC vs. Home Equity Loan
Line of credit or fixed lump sum? How to choose.
Home Equity Investment (HEI)
Cash from your equity with no monthly payment.