- If your mortgage rate is under 5%, a HELOC usually costs less — it leaves your first mortgage untouched and only charges today's rate on what you borrow.
- A cash-out refi reprices your entire remaining balance at today's rates (~6.68%), which can add $1,000+/month in payments.
- HELOCs carry variable rates (avg. 7.17%) — great if rates drop, but plan for scenarios where they rise.
- A cash-out refi makes sense when your current rate is already above market or you need a fixed, predictable lump sum.
- 82.8% of U.S. mortgaged homeowners still have a rate below 6%, making this decision relevant for the vast majority.
If your mortgage rate is somewhere between 2% and 5%, you're sitting on a decision most homeowners have to get right in 2026. Average HELOC rates have dropped to 7.17% as of March 18, 2026 — and cash-out refinance rates are sitting around 6.68%. The numbers are close. But they're measuring very different things, and choosing wrong could cost you thousands.
Here's how to think through the HELOC vs. cash-out refinance decision when you already have a rate worth keeping.
Why Your Existing Mortgage Rate Changes Everything
Most homeowners making this decision right now bought or refinanced during 2020–2022, when rates dipped as low as 2–3%. According to a Redfin report based on Q3 2024 data, 82.8% of mortgaged homeowners in the U.S. still have a rate below 6%. That single fact reshapes the entire comparison.
A cash-out refinance replaces your current mortgage with a new, larger loan at today's rates — repricing your entire balance. A HELOC is a separate credit line on top of your existing loan; your first mortgage stays at its original rate and terms.
A cash-out refinance (also called a cash-out refi) replaces your current mortgage with a new, larger loan — and you take the difference in cash at closing. If you're sitting on a 3% mortgage and today's 30-year fixed refinance rates are averaging 6.68%, a cash-out refi doesn't just borrow against your equity. It applies that 6.68% rate to your entire remaining mortgage balance. Every dollar you already owe gets repriced.
A HELOC (home equity line of credit) works differently. It's a second mortgage — a separate credit line on top of your existing loan. Your first mortgage stays exactly as it is, at its original rate and terms. You only pay the HELOC rate on what you actually draw from the line of credit.
As Laurie Goodman, Institute Fellow at the Urban Institute, put it: if you have a low-rate mortgage, a HELOC allows the first mortgage to remain in place, and only the incremental funds are borrowed.
The Real Cost Comparison: A Side-by-Side Look
Here's a concrete example showing how different the math can be.
Scenario: You have a $300,000 remaining mortgage balance at 3.25%. Your home is worth $500,000. You want $75,000 for a kitchen renovation.
Your actual payments will differ based on your credit profile, loan amount, and lender. These figures are illustrative. The HELOC wins on monthly cost in this scenario — about $670 less per month. But there are tradeoffs, and the cash-out refi has real arguments too.
| Feature | HELOC | Cash-Out Refinance |
|---|---|---|
| Rate type | Variable (adjustable) | Fixed |
| Impact on existing mortgage | None — stays intact | Replaces it entirely |
| Upfront closing costs | Typically minimal or none | 2%–5% of loan amount |
| Funds access | Revolving line — draw as needed | Lump sum at closing |
| Payment predictability | Varies with prime rate | Fixed for life of loan |
| Tax deductibility | Only if used for home improvement | Same rules apply |
| Best for | Low existing rate; flexible cash needs | Above-market rate; one-time large expenses |
When a HELOC Makes More Sense
For the majority of homeowners right now — those locked in at rates well below today's market — a HELOC is the more financially conservative choice. Here's why.
You preserve your first mortgage rate
That 3% or 3.5% rate is essentially a long-term asset. Giving it up to borrow $75,000 means paying a higher rate on your entire remaining balance for potentially 30 years. The math rarely favors that exchange.
Lower upfront costs
Cash-out refinances come with closing costs of 2%–5% of the loan amount. On a $350,000 loan, that's $7,000–$17,500 out of pocket (or rolled into the balance). Many HELOC lenders charge minimal fees, and some offer no closing costs at all — though you'll want to read the fine print on annual fees and inactivity charges.
You only borrow what you need
With a HELOC, you get approved for a max amount but only draw — and only pay interest on — what you actually use. If you budget $75,000 for a renovation and end up spending $60,000, you pay interest on $60,000. A cash-out refi disburses the full amount at closing.
The Federal Reserve held rates steady at its March 2026 meeting, its second pause of the year. Most analysts expect any future moves to be cuts, not increases. If that plays out, your variable HELOC rate could drift lower. That said, variable rates can rise if economic conditions shift — so borrowers should run scenarios at higher rates, not just today's levels.
When a Cash-Out Refinance Deserves Consideration
There are scenarios where a cash-out refi is the stronger play, even in today's rate environment.
If you bought at 7% or higher, today's cash-out refi rates near 6.68% could save you money on your existing balance while providing the cash you need.
If you're paying off a lump sum — like a contractor or credit card debt — a cash-out refi delivers certainty on rate, payment, and total cost from day one.
HELOCs carry variable rates. If your budget is tight and you need a fixed monthly payment for 30 years, the cash-out refi provides that certainty.
Some homeowners use a cash-out refi to reset to a 15-year mortgage. If you're 10 years into a 30-year loan and want to accelerate payoff, this can make sense.
Choose a HELOC if…
- Your current mortgage rate is below 5%
- You want flexibility to draw funds as needed
- You prefer lower upfront costs
- You can handle variable-rate payments
Choose a Cash-Out Refi if…
- Your current rate is already above today's market rates
- You need a fixed lump sum with predictable payments
- You want to shorten your loan term
- Rate certainty matters more than monthly savings
Consider Neither If…
- You don't have at least 15–20% equity
- Your debt-to-income ratio is already above 43%
- You're borrowing for non-essential spending
The Qualification Basics: What Each Option Requires
Both products use your home as collateral. Both require meaningful equity and a solid credit profile. But the specific thresholds differ.
| Requirement | HELOC | Cash-Out Refinance |
|---|---|---|
| Credit score | 680+ (700+ preferred) | 620+ (higher = better rates) |
| Combined LTV | Up to 80–90% | Up to 80% |
| DTI ratio | Below 43–50% | Below 45–50% |
| Equity required | 15–20% must remain | 20% must remain |
| Closing costs | Minimal or none | 2–5% of loan amount |
Some lenders — particularly nonbank lenders — require you to draw 80–100% of your approved line at closing. That eliminates one of the HELOC's main advantages: flexibility. Before applying, ask the lender specifically about minimum draw requirements.
Frequently Asked Questions
The Bottom Line
For most homeowners in 2026 — especially those with mortgage rates below 5% — a HELOC is the smarter way to access home equity without giving up a hard-to-replace first mortgage rate. The math is straightforward: a HELOC adds a second layer of debt at today's rates, leaving your original rate untouched. A cash-out refi reprices everything.
That said, if your current mortgage rate is already above today's market rates, or you need a fixed, predictable lump sum with no exposure to rate movement, a cash-out refi deserves a real look. There's no universal answer — there's only the answer that fits your rate, your equity, and your specific borrowing need.
HELOC rates are tied to the prime rate. If the Fed raises rates, your monthly payment increases. Always run your budget at 2–3% above today's rate to see if you can handle the worst case.
Both a HELOC and a cash-out refinance use your home as collateral. If you can't make payments, you risk foreclosure. Borrow only what you can confidently repay.
When a HELOC's draw period ends, payments jump from interest-only to full principal-and-interest. Many homeowners underestimate this increase — plan ahead.
Disclaimer: This content is for informational purposes only and does not constitute financial advice. Interest rates, terms, and eligibility requirements vary by lender and are subject to change. Consult a licensed financial advisor or mortgage professional before making any financial decisions.
