Does a cash-out refinance affect my current mortgage rate?

Yes. A cash-out refinance pays off your existing mortgage and gives you a brand-new rate on the entire balance. If your current rate is already low, refinancing can raise the rate on money you have already borrowed — which is why many homeowners with low locked-in rates choose a HELOC instead.

HELOC vs. cash-out refinance

Q: Is a HELOC or cash-out refinance cheaper?

A HELOC is usually cheaper upfront because closing costs are low or zero, and you only pay interest on what you draw. A cash-out refinance has higher closing costs (typically 2%–6% of the whole new loan) but can be cheaper over time if it locks a low fixed rate on a large, one-time amount. The cheaper option depends on how much you borrow, for how long, and whether your current mortgage rate is lower than today's.

Q: What is the main difference between a HELOC and a cash-out refinance?

A HELOC is a second loan: a revolving, usually variable-rate line of credit you borrow against as needed, on top of your existing mortgage. A cash-out refinance replaces your existing mortgage entirely with one new, larger fixed-rate loan and pays you the difference in cash.

Q: Which has a lower interest rate, a HELOC or a cash-out refinance?

A cash-out refinance usually has a lower interest rate because it is a first-lien, fixed-rate mortgage. A HELOC typically carries a higher, variable rate tied to the prime rate, so its payment can rise as rates change.

Reviewed by the HomeEquityWise Editorial Team · Last updated May 2026 · How we calculate these numbers

Both let you turn home equity into cash, but they work in opposite ways. A HELOC is a second loan — a revolving, variable-rate line of credit you draw on as needed, leaving your current mortgage untouched. A cash-out refinance replaces your entire mortgage with one new, larger fixed-rate loan and hands you the difference. If your current mortgage rate is low, a HELOC usually wins because refinancing would reset that rate. If you need one large sum and want a fixed payment, a cash-out refinance is often cheaper over the long run.

HELOC: flexible, low upfront cost, variable rate, keeps your existing mortgage — best for ongoing or uncertain needs.
Cash-out refinance: one fixed-rate lump sum, higher closing costs, resets your whole mortgage — best for a single large need.
The deciding factor is usually your current mortgage rate: low rate → lean HELOC; high rate → a cash-out refi can lower everything at once.
Closing costs run about 2%–6% on a refinance vs. little to none on many HELOCs.
Run both in the HELOC payment calculator and the cash-out refinance calculator before deciding.

What each one actually is

A home equity line of credit (HELOC) is a second lien on your home. The lender approves a credit limit based on your equity, and you borrow against it during a "draw period" (commonly 10 years), repaying and re-borrowing like a credit card. Most HELOCs carry a variable rate tied to the prime rate, so your payment moves with the market. Your original mortgage stays exactly as it is.

A cash-out refinance replaces your existing mortgage with a new, bigger one. You borrow more than you currently owe, the old loan is paid off, and you pocket the difference in cash. You get one new fixed rate and one monthly payment on the whole balance — which means the rate on money you'd already borrowed resets to today's rate, for better or worse.

HELOC vs. cash-out refinance at a glance

Feature	HELOC	Cash-out refinance
Loan structure	Second loan, on top of your mortgage	Replaces your mortgage entirely
Rate type	Usually variable	Usually fixed
How you get the money	Draw as needed, over years	One lump sum at closing
Upfront/closing costs	Low or none	~2%–6% of the new loan
Effect on current mortgage	None — keeps your existing rate	Resets the rate on the whole balance
Payment predictability	Varies with rates and draws	Fixed and predictable
Best for	Flexible, ongoing, or uncertain needs	One large, known expense

Worked example

Say your home is worth $400,000, you owe $200,000 at a comfortable 4% fixed rate, and you need $50,000 for a renovation. Most lenders let you borrow up to about 80% of the home's value, or $320,000 total.

HELOC route: you open a $50,000 line as a second loan. Your $200,000 first mortgage at 4% is untouched. You pay a variable rate (say ~8.5% today) only on what you actually draw — so if you spend $30,000 this year, you owe interest on $30,000, not the full $50,000.

Cash-out refinance route: you replace the $200,000 loan with a new $250,000 fixed-rate mortgage. The catch: that entire $250,000 now carries today's rate (say ~6.5%), not your old 4%. You traded a low rate on $200,000 to get a single fixed payment on $250,000. Unless today's rate is at or below your current 4%, the HELOC is almost always cheaper here. Plug your own numbers into the cash-out refinance calculator to see the break-even.

When to choose each

Choose a HELOC if your current mortgage rate is lower than today's rates, you want flexibility to borrow over time (renovations in phases, tuition, a cash cushion), or you want to keep closing costs near zero. Choose a cash-out refinance if you need one large lump sum, you want the certainty of a fixed payment, or today's rates are at or below your existing mortgage rate so refinancing the whole balance actually saves money.

Frequently asked questions

Is a HELOC or cash-out refinance cheaper?

A HELOC is usually cheaper upfront — low or no closing costs, and you pay interest only on what you draw. A cash-out refinance has higher closing costs (about 2%–6% of the new loan) but can win over time if it locks a low fixed rate on a large one-time amount. It depends on how much you borrow, for how long, and whether today's rate beats your current one.

What's the main difference?

A HELOC is a second, revolving, usually variable-rate loan layered on top of your existing mortgage. A cash-out refinance replaces your mortgage entirely with one new, larger fixed-rate loan and pays you the difference in cash.

Does a cash-out refinance change my current rate?

Yes — it pays off your existing mortgage and gives you a brand-new rate on the whole balance. If your current rate is already low, that's a real downside, which is why low-rate borrowers often prefer a HELOC.

Which has the lower interest rate?

A cash-out refinance usually has the lower rate because it's a first-lien, fixed-rate mortgage. A HELOC typically carries a higher, variable rate tied to prime, so its payment can rise over time.

Sources: CFPB — Home equity loans and HELOCs · CFPB — What is a cash-out refinance? · our methodology. Educational only — not financial advice; confirm figures with a licensed lender.