Cash-out refinance vs HELOC: the honest comparison
You have equity in your home and you want to pull some of it out. There are two common ways: a cash-out refinance (you replace the existing mortgage with a bigger new one and pocket the difference) or a home equity line of credit, usually called a HELOC (you keep the existing mortgage and open a separate revolving credit line secured by the house). Both are collateralized by your home. Both have tax implications. They behave very differently.
Which one is right for you depends on six variables: your current mortgage rate, how much cash you need, how you'll use it, how soon you need it, whether you can handle variable rates, and how disciplined you are about paying things back.
The key structural differences
Cash-out refinance: one loan, fixed rate (usually), closing costs 2-5% of the new loan balance, 30-year payoff horizon, full amount disbursed at closing, replaces your existing mortgage.
HELOC: second loan sitting behind your existing mortgage, variable rate tied to prime rate, closing costs $0 to $1,500 typical, 10-year draw period followed by a 10-to-20-year repayment period, you pull funds as needed up to the line limit, existing mortgage stays in place.
The most important distinction is what happens to your existing mortgage. If you currently have a 3.25% mortgage from 2021, a cash-out refinance means trading that rate for today's 6-to-7% rate on the entire balance, not just the cash-out portion. A HELOC preserves the 3.25% on the original balance and only charges today's rate (typically prime plus 0 to 2 percent) on the drawn portion.
When cash-out wins
Three scenarios where a cash-out refinance beats a HELOC:
- Your current mortgage rate is already higher than the new refi rate. If you're sitting on a 7.5% mortgage from 2023 and today's 30-year is 5.75%, refinancing captures the rate drop on the existing balance AND pulls cash, all in one transaction.
- You need a large lump sum right now. Cash-out delivers the full amount at closing. HELOCs can also do this if you draw the line fully on day one, but that's not how most people use them.
- You want fixed-rate certainty. Cash-out is fixed-rate (conventional) and the payment is predictable for 30 years. HELOC rates float, and when the Fed raises prime, your payment goes up.
When HELOC wins
Three scenarios where HELOC is strictly better:
- You have a low-rate existing mortgage. A 3% mortgage from 2020 is worth preserving. HELOC lets you tap equity without touching it. Rocket Mortgage and Chase both offer HELOCs with the existing mortgage at another lender, though rates are usually slightly better if you have a banking relationship.
- You need the money in chunks over time. Kitchen remodel, college tuition paid per semester, ongoing small business capital. HELOCs let you draw as you go and only pay interest on what's actually out. Cash-out forces you to take (and pay interest on) the full amount at closing.
- You might not need the money at all. Opening a HELOC is cheap. If you never draw, you pay little or nothing. Refinancing and pulling cash you don't end up using means paying closing costs and interest on money sitting in your checking account at 0.01%.
Rate math: 2026 context
At the time of writing (April 2026), the Freddie Mac PMMS 30-year fixed is hovering in the high 5s to low 6s. Cash-out rates typically run 0.25 to 0.5 percent higher than rate-and-term refinance rates. HELOCs at the major banks (Chase, Wells Fargo, US Bank) are running prime plus 0 to 2 percent, with prime currently around 7.5%. Intro rates are common, 12 months at a reduced rate, then floating.
Doing the comparison on a $50,000 cash need with a $400,000 existing mortgage at 3.75%:
Cash-out path: Replace $400k at 3.75% with $450k at 6.25%. New payment on $450k at 6.25% over 30 years: $2,771. Old payment on $400k at 3.75% over 27 years remaining: $1,925 (amortizing a higher-rate load doesn't apply, but if it did, for comparison). Effectively, all $450k is now paying 6.25% instead of 3.75%. Huge lifetime interest cost.
HELOC path: Keep the $400k at 3.75%, open a $50k HELOC at prime plus 1% = 8.5% current. Monthly interest-only payment during draw: $354. Total interest at 8.5% if you pay it off over 10 years: $24,000. But the $400k principal keeps compounding at 3.75%, not 6.25%.
In this scenario, HELOC wins hands-down even at a much higher rate, because preserving the low rate on the big balance matters more than the rate differential on the small one.
Tax treatment (IRS Pub 936)
Under current rules in IRS Publication 936, interest on both cash-out refinances and HELOCs is only tax-deductible if the proceeds are used for "home acquisition indebtedness", meaning buying, building, or substantially improving the home securing the debt. Cash-out for debt consolidation, lifestyle spending, tuition, or investment is not deductible on federal taxes, regardless of whether it's a cash-out refi or HELOC.
This changed under the 2017 Tax Cuts and Jobs Act. Before TCJA, HELOC interest up to $100,000 was deductible regardless of use. Not anymore. Consult a tax professional for your specific situation.
Closing costs compared
Cash-out closing costs: 2-5% of the new loan amount, typical $6,000 to $15,000 on a $300,000 loan. Full appraisal required, full title work, origination fees, points if applicable.
HELOC closing costs: usually $0 to $1,500. Many lenders offer "no-closing-cost" HELOCs in exchange for a minimum outstanding balance or a commitment to keep the line open for 3+ years. Some charge an annual maintenance fee ($50 to $100). Appraisals are often waived or done as a desktop review.
The closing cost gap is huge and often underappreciated. On the same $50,000 cash need, cash-out might cost $10,000 in fees to execute, while a HELOC might cost zero. That's effectively a 20% drag on the cash-out before you've even evaluated the rates.
Flexibility
Cash-out: inflexible. You get the full amount at closing, you start paying principal and interest on all of it immediately, and if you decide later you didn't need it, tough.
HELOC: extremely flexible. Draw, repay, redraw. Pay interest only on outstanding balance during the draw period. Use as an emergency fund backup. Some borrowers keep a HELOC open for years without using it, as cheap insurance against a cash crunch.
Risk profile
Cash-out: fixed-rate safety, but a permanent increase in your mortgage balance. Home value drops can leave you underwater.
HELOC: variable rate risk. If prime jumps 2%, your HELOC payment jumps too. Lenders can freeze the undrawn portion if the home value drops or your credit deteriorates (happened widely in 2008-2009). Draw period ends and repayment kicks in, often doubling your monthly cost.
The hybrid option: fixed-rate home equity loan
Worth a mention. Some lenders (Wells Fargo, Discover, USAA) offer fixed-rate home equity loans, which are second mortgages at a fixed rate and fixed term (typically 5 to 20 years). You get the lump sum like cash-out, but without touching the first mortgage. Rate is usually higher than cash-out but preserves the first mortgage.
Good middle ground if you want fixed-rate certainty without refinancing a low-rate first mortgage.
Bottom line
If your first mortgage rate is higher than today's rates and you need a big chunk of cash, cash-out wins. If your first mortgage rate is lower than today's rates, HELOC (or fixed home equity loan) almost always wins, sometimes by a six-figure margin over the life of the loan. Run the specific numbers for your situation before signing anything.
The RefiCalc calculator handles rate-and-term refinances; cash-out and HELOC comparisons are on our roadmap. In the meantime, ask your lender for a side-by-side quote on both products on the same cash need. Most will provide it if you ask. The CFPB HELOC guide is required reading before you sign.