HELOC vs. Cash-Out Refinance

You've built equity and want to use some of it. Two common doors: a cash-out refinance or a HELOC. Which is right hinges on one thing most people overlook — the rate on the mortgage you already have.

Cash-out refinance

A cash-out refi replaces your first mortgage with a larger one and hands you the difference as a lump sum. The catch: you get a new rate on your entire balance, not just the money you're pulling out, and you pay full closing costs. It makes sense when you'd be refinancing anyway or your current rate is high enough that resetting the whole loan is an improvement.

HELOC

A HELOC is a second loan — a revolving line of credit secured by your home, usually at a variable rate, with a draw period (borrow as needed) followed by a repayment period. Crucially, it leaves your first mortgage completely untouched. Upfront costs are typically much lower than a refinance, and you borrow — and pay interest on — only what you actually use.

The rate you already have is the whole test

Here's the question that decides it: what happens to your existing first mortgage? If that loan carries a low rate, a cash-out refinance throws that rate away across your whole balance to access a slice of equity — often a bad trade. A HELOC (or a fixed home-equity loan) preserves the cheap first mortgage and prices only the new money on top.

Cost, risk, and the ceiling

Both put your home on the line. A HELOC's variable rate can climb, so stress-test the payment at a higher rate before you lean on it; a cash-out resets your amortization clock. And either way you're limited by your combined loan-to-value (CLTV) — lenders cap how much total debt you can carry against the home, typically leaving some equity untouched. Check where refinance rates sit on our rate board before you decide.

By L.W. Martin, Founder — 20 years in the mortgage business, including 15 running his own brokerage. About → · Updated August 2026.