Why are HELOC rates higher than mortgage rates?

A HELOC is riskier and costlier for a lender to make than a first mortgage, and it's priced off a different benchmark. That doesn't always make it the more expensive choice.

Reviewed by Shawn Way, NMLS #1007298★ 4.9 from 111 reviewsUpdated October 28, 2026

Reason 1: second in line

Most HELOCs are second liens. If a home is sold in foreclosure, the first mortgage is paid in full before the HELOC lender gets anything. When values fall, the second lien is the one that comes up short. Lenders charge more to carry that risk. See is a HELOC a second mortgage.

A HELOC in first position, on a home with no mortgage, avoids this problem, and some lenders may price it a little better for that reason. It still carries the other two differences below.

Reason 2: prime vs. the bond market

The two products are priced off different benchmarks.

• HELOCs are usually variable: the prime rate plus a margin. Prime, as published by the Wall Street Journal, conventionally sits 3 points above the upper bound of the Federal Reserve's federal funds target. So even a HELOC with a zero margin starts 3 points above the Fed's short-term rate. Prime is 7.00% as of October 28, 2026.
• Fixed-rate mortgages are priced off the bond market. Most are sold to investors as mortgage-backed securities, and their rates tend to track longer-term Treasury yields plus a spread, not the Fed's short-term rate directly.

When short-term rates are high relative to long-term yields, HELOCs look especially expensive next to mortgages. When the Fed cuts, prime and HELOC rates fall right away, while mortgage rates may move less. Variable rates can also rise, which a fixed mortgage never does.

Reason 3: smaller loans, fewer ways to recover costs

• Smaller balances. A typical HELOC is a fraction of the size of a first mortgage, but the lender still pays for underwriting, a valuation, title work and servicing. Those fixed costs take a bigger bite out of a smaller loan.
• Lower closing costs for you. Many HELOCs have low or no upfront closing costs, so the lender recovers more of its cost through the rate. See HELOC closing costs.
• Held, not sold. Most HELOCs stay on the lender's own balance sheet instead of being sold into the large, liquid mortgage-backed securities market that keeps first-mortgage funding cheap.
• Uncertain usage. You might draw nothing or everything. The lender has to hold capital against an open line either way.

When a HELOC is still cheaper overall

The fair comparison usually isn't a HELOC rate against a mortgage rate. It's keeping your current mortgage plus a HELOC against replacing your mortgage with a bigger cash-out refinance. For that, look at the blended rate: the weighted average rate across everything you owe.

Blended rate = (first mortgage balance × its rate + HELOC balance × its rate) ÷ total balance

Example 1: you have a low first-mortgage rate

Example only, with assumed rates. Home value $600,000. You owe $300,000 at 3.50% and need $60,000.

Even though the HELOC's rate is 1.5 points higher than the refinance rate, keeping the 3.50% mortgage saves about $8,100 in interest in the first year. The refinance would also usually carry closing costs on the full $360,000. The HELOC rate can rise, so check how high it would have to go: the refinance only wins on rate if the HELOC averaged above about 21.5% ($10,500 + $60,000 × 21.5% = $23,400), which is why rate caps matter more than the gap here.

Example 2: your first-mortgage rate is already high

Same home and $60,000 need, but your $300,000 mortgage is at 7.00%. Keep-plus-HELOC interest is $21,000 + $4,800 = $25,800, a blended 7.17%. The refinance at an assumed 6.50% is $23,400, so here the refinance is cheaper on rate, before closing costs. The lower your current rate, the more a HELOC's higher rate is worth paying.

These examples use first-year interest on full balances and ignore amortization and fees to keep the arithmetic simple. Run your own case with the HELOC vs. cash-out calculator, and see HELOC vs. cash-out refinance.

Compare with real numbers

Check typical margins on the HELOC rates page. To see your own numbers, get your HELOC rate from Shawn. A HELOC is secured by your home, variable rates can change, and nothing here is an offer of credit.

Related question: HELOC vs. mortgage

Questions people ask

Are HELOC rates always higher than mortgage rates?

Usually, but not always. When short-term rates are low relative to long-term yields, a HELOC rate can be at or below a 30-year fixed mortgage rate.

Why is a HELOC rate variable?

Most HELOCs are tied to the prime rate, which moves when the Federal Reserve changes its target rate. Some lenders let you lock part of the balance at a fixed rate. See fixed-rate HELOCs.

Is a home equity loan rate lower than a HELOC rate?

Not necessarily. A home equity loan is fixed and priced off longer-term rates, so it can be higher or lower than a HELOC depending on the market. It's still a second lien, so it usually prices above a first mortgage.

Will HELOC rates go down if the Fed cuts rates?

Generally yes. Prime usually moves the same day as a Fed change, and your HELOC rate follows at its next adjustment, subject to any floor. The next Fed meeting is December 9, 2026.

Should I refinance my mortgage or get a HELOC?

Usually a HELOC, if your current mortgage rate is well below today's refinance rates, because keeping the low rate and adding a HELOC usually costs less overall. Compare the blended rates and closing costs of both before deciding.

More in HELOC guides

• Credit score for a HELOC
• HELOC closing costs and fees
• How long a HELOC takes
• Does a HELOC require an appraisal?
• Is HELOC interest tax deductible?
• Fixed-rate HELOC options
• Can you pay off a HELOC early?
• How to refinance a HELOC

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