One replaces your current mortgage. The other usually sits beside it. That single difference changes the rate risk, payment structure, closing costs, and flexibility.
The simplest difference
A cash-out refinance replaces your existing first mortgage with a new, larger mortgage and gives you the difference in cash after costs and payoffs. A home equity line of credit, or HELOC, is usually a separate second lien that lets you borrow against available equity while keeping the existing first mortgage in place.
Because both are secured by your home, missing required payments can put the property at risk. This is not just a rate comparison; it is a decision about debt structure, cash flow, and how much of your home equity to expose.
Side-by-side
| Question | Cash-out refinance | HELOC |
|---|---|---|
| What happens to the first mortgage? | It is paid off and replaced. | It usually stays in place; the HELOC is separate. |
| How do you receive funds? | A lump sum at closing. | Borrow as needed up to the available line during the draw period. |
| Typical rate structure | Often fixed, depending on the new mortgage selected. | Often variable, so the rate and payment can change. |
| Closing costs | Generally similar to completing a full refinance. | Often lower than a full refinance, but fees and terms vary. |
| Common fit | A known lump-sum need when replacing the first mortgage makes sense. | Phased or uncertain expenses when keeping the current first mortgage matters. |
The current first-mortgage rate is a major clue
If your current first mortgage has favorable terms, replacing the entire balance just to access a smaller amount of cash may be expensive. A HELOC can preserve that first mortgage, but its variable rate and later repayment structure can create uncertainty.
If the existing mortgage itself needs to change—or the homeowner wants one new payment and a predictable structure—a cash-out refinance may deserve a closer look. Neither conclusion should be made without comparing total costs over the expected holding period.
Questions that usually decide it
- How much cash is needed, and is it needed all at once or in stages?
- What rate and remaining term are on the current first mortgage?
- Can the household handle a HELOC payment if the variable rate rises?
- How long will the homeowner keep the property and the new debt?
- What are the full closing costs, annual fees, draw rules, and early-closure terms?
- Is the money being used for a durable goal—or to create room for spending that will return?
Compare the same scenario, not two sales pitches
For each option, compare the cash received, upfront costs, combined monthly payment, rate-change risk, total projected interest over the time you expect to keep the loan, and remaining balances at the end of that period. A low initial payment can hide later risk; a simple one-loan structure can hide the cost of replacing favorable debt.
Primary sources
Program details can change. These links are the starting point for current verification.
