One leaves your first mortgage completely alone. The other replaces it. If you are sitting on a rate in the threes or fours, that is the entire decision.
Use a HELOC if your existing first mortgage has a low rate you want to keep. A HELOC sits in second position and leaves that note untouched, so you only pay the new rate on the money you actually draw.
Use a cash-out refinance if your current rate is at or above today’s market, if you want the whole balance fixed, or if you need more cash than a second-position line will support. It replaces your first mortgage entirely, which means the new rate applies to everything you owe.
Eight factors. What decides it for most Capital Region homeowners is the first row.
| Factor | HELOC | Cash-Out Refinance |
|---|---|---|
| Your existing first mortgage | Untouched. Rate, term and payment all stay exactly as they are | Replaced. The new rate applies to your entire balance, not just the cash you take |
| Rate structure | Usually variable, tied to an index; some lenders offer a fixed-rate draw option | Fixed or adjustable, locked at closing for the full term |
| Interest charged on | Only the balance you have actually drawn | The entire new loan amount from day one |
| How much you can access | Commonly up to about 85% combined loan-to-value | Typically up to 80% loan-to-value on a conventional cash-out |
| Closing costs | Generally lower; some lenders waive or credit them | Full refinance costs — title, appraisal, origination on the whole balance |
| Timeline | Often about 2–3 weeks | Typically 30–45 days |
| How you receive funds | A revolving line you draw from as needed during the draw period | A single lump sum at closing |
| Best suited to | Staged projects, standby liquidity, unpredictable costs, tuition | One large defined need, debt consolidation, or when you want rate certainty |
Combined loan-to-value limits, rate structures and closing cost treatment vary by lender and by property type. Figures are general guidelines as of September 2026, not an offer of credit.
This is the calculation people skip. They shop the rate on the equity line, compare it to the refinance rate, and pick the lower number. But a cash-out refinance re-prices your whole balance. If you are carrying $300,000 at 3.5% and you refinance to pull out $50,000, you just moved that entire $300,000 to today’s rate.
Run both. I will show you the blended cost of keeping the first mortgage plus a line, against the cost of one new loan on everything. It is not close in most cases, and people are genuinely surprised which direction it goes.
One honest caution on HELOCs: the rate is usually variable, and the payment can move. Know what it looks like if rates rise before you commit to it.
— Brian Marchand, Sr. Loan Consultant · NMLS #481563 · call or text meProgram parameters shown reflect agency and investor guidelines current as of September 2026 and are subject to change without notice. Figures are general guidelines, not quotes, and vary by lender overlay, credit profile, property type, occupancy and county. This page is educational and is not a commitment to lend, an offer of credit, or tax, legal or investment advice. All loans subject to credit approval and program guidelines; not all applicants will qualify. Brian Marchand, NMLS #481563 · New American Funding, LLC, NMLS #6606 · Equal Housing Lender.