Your Low Mortgage Rate Is an Asset. Think Twice Before Giving It Up.
Here are four questions that matter more than “what’s the lowest interest rate” before opening a HELOC.
When homeowners compare borrowing options, they usually start with the interest rate.
Which makes sense, but doesn’t necessarily mean it’s the cheapest or best solution.
If you have substantial equity in your home and need access to cash, a cash-out refinance may advertise a lower rate than a Home Equity Line of Credit (HELOC).
On the surface, the refinance looks cheaper. But, if you want a better deal, you need to move away from automatically opting for the lowest rate.
Instead, ask: “How much of my debt will that new rate apply to?”
This question is becoming increasingly relevant. U.S. News recently reported that demand for home equity loans and HELOCs reached an 18-year high in the first quarter of 2026, according to Intercontinental Exchange. Millions of homeowners who financed or refinanced when mortgage rates were historically low are now choosing second liens rather than replacing those original mortgages.
A Lower Rate Can Still Cost More
Consider a homeowner who owes $300,000 on a mortgage at 3.25% and needs another $80,000.
- Option 1: Keep the existing mortgage and take out an $80,000 HELOC at 8.25%
- Option 2: Complete a cash-out refinance, replacing the existing mortgage with a new $380,000 loan at 6.45%, plus closing costs
At first glance, 6.45% beats 8.25%.
But the HELOC only applies the higher rate to the new $80,000. The refinance applies its new rate to the entire $380,000 balance, including $300,000 that had previously been financed at just 3.25%.
Using the illustrative assumptions in this example, keeping the original mortgage and adding the HELOC produces roughly $138,000 of interest during the first ten years. The cash-out refinance produces approximately $235,000.
That is a difference of about $97,000.
A low-rate mortgage should be viewed as an asset on your balance sheet. Giving it up should be evaluated just as carefully as giving up any other favorable financial position.
Four Questions Matter More Than the Advertised Rate
Before deciding how to tap your equity, start here:
1. What rate am I already paying?
If your first mortgage is in the 3% or low-4% range, refinancing the entire balance may be far more expensive than the new loan's advertised rate suggests.
2. How much money do I actually need?
Needing a large sum of money, say, $50,000 or $80,000, does not automatically mean it makes sense to restructure hundreds of thousands of dollars of existing debt.
3. Do I need flexibility or certainty?
HELOCs can make sense for phased expenses where the timing or final amount is uncertain. Fixed-rate home equity loans can be better suited to a known lump sum.
4. What is my exit plan?
Most HELOCs have variable rates, and payments can change. The draw period can also create a false sense of affordability if borrowers focus on a lower interest-only payment without planning for principal repayment later.
As Prestige Advisors founder Mark Clark recently told U.S. News, variability alone does not make a HELOC inappropriate. The bigger distinction is whether the borrower has stable cash flow and a clear payoff plan, or is treating the line as open-ended debt.
Home Equity Can Solve a Problem — or Move It
That brings us to one final question: Why are you borrowing?
Using home equity strategically is very different from repeatedly tapping your house to solve a cash-flow problem.
Consolidating expensive consumer debt into a lower-cost home equity product may improve the interest-rate math. But it also changes the risk: debt that may previously have been unsecured is now backed by your home.
That does not automatically make the strategy wrong. It means the borrowing needs to solve the underlying problem rather than simply reset it.
Look at the Whole Equation
Home equity can be an extremely useful financial tool. But the smartest decision is rarely determined by the most attractive percentage on a lender's quote.
Look at what you already owe, what rate you are giving up, how much money you actually need, the total cost of each option, and exactly how the new debt gets repaid.
Sometimes the loan with the higher rate really can be the cheaper choice.
The number that matters isn't simply the rate. It's what that rate touches.
Sometimes the greatest planning opportunities begin with recognizing what you do not know — and bringing the right specialists to the table before an opportunity is missed. Send us an email at hello@prestigeadvisors.com or schedule a free conversation today!
Disclosure: This content is for educational and informational purposes only. It does not constitute investment, financial, tax, or legal advice, and nothing here should be interpreted as a recommendation to buy or sell any security or pursue any specific strategy. All investing involves risk, including the potential loss of principal. Past performance does not guarantee future results. Tax laws are complex and apply differently to each person’s situation. Consult your own qualified tax, legal, and financial professionals before making any decisions.