You have equity in your home and you want some of it as cash — for a renovation, a big expense, or to pay off costlier debt. Two tools do this: a cash-out refinance and a home equity line of credit (HELOC). They reach the same goal by opposite mechanics, and in the rate environment of 2026 the mechanics make all the difference.

Two ways to borrow against your home

A cash-out refinance replaces your entire existing mortgage with a new, larger one and gives you the difference. Your old loan is gone; you now have one bigger loan at today's rate.

A HELOC leaves your first mortgage exactly as it is and adds a second loan on top — a revolving credit line, secured by your home, that you can draw from as needed. Your original mortgage, and its rate, are untouched.

The difference that matters in 2026

Here is the point that decides most of these choices today. A cash-out refinance re-prices your entire balance at the current rate. A HELOC charges today's rate only on the new money you borrow. If you took out or refinanced your mortgage when rates were low — say 3.5% in 2021 — a cash-out refinance would drag that whole balance up to today's ~6.5%, while a HELOC lets you keep the cheap first mortgage and pay the higher rate only on the slice you actually need.

The trap: using a cash-out refinance to borrow a little against a mortgage that carries a low rate. You don't just pay today's rate on the cash — you pay it on everything you already owed, for up to thirty more years.

The same $100,000, two ways

A homeowner owes $250,000 at 3.50% (locked in 2021) on a $600,000 home, and wants $100,000 in cash.

Worked example
OPTION A - Cash-out refinance to $350,000 at 6.50% New payment (P&I, 30yr) $2,212 / mo The whole $350,000 is now at 6.50%. OPTION B - Keep $250,000 at 3.50% + $100,000 HELOC at 8.00% First mortgage (unchanged) $1,123 / mo HELOC, interest-only draw $667 / mo Combined $1,790 / mo Option A costs ~$422/mo MORE -- for the same $100,000.

Why the gap, when the HELOC's 8% rate is higher than the refinance's 6.5%? Because Option A re-prices the original $250,000 you already owed. Lifting that balance from 3.50% to 6.50% adds about $625 a month in interest — roughly $7,500 a year — on money you weren't even trying to borrow. The HELOC's higher rate applies only to the new $100,000, so it wins easily.

The lesson isn't “HELOCs are always better.” It's that the comparison hinges on your existing rate. If your current mortgage rate is at or above today's rates, a cash-out refinance may be fine or even better. If it's well below, protecting it with a HELOC is usually the cheaper path.

How a HELOC actually works

A HELOC has two phases. During the draw period (commonly 10 years) you can borrow, repay, and borrow again up to your limit, typically paying interest only on what you've drawn. When the draw period ends, the repayment period begins (often 20 years), and your payment jumps to principal-and-interest to pay the balance off — a step-up that surprises people who got used to interest-only payments. A related product, the home equity loan, hands you a lump sum at a fixed rate with fixed payments — better when you need a set amount once, rather than a flexible line.

The advantages of the HELOC are flexibility and low upfront cost: you borrow only what you need when you need it, and setup costs are usually minimal compared with a full refinance. That makes it well-suited to staged expenses like a renovation paid in phases.

Rates, risk, and the variable-rate catch

Most HELOCs carry a variable rate tied to the prime rate (7.5% in mid-2026) plus a margin, so your payment moves as the Federal Reserve moves rates. That's the mirror image of the cash-out refinance's fixed rate: the HELOC preserves your cheap first mortgage but exposes the new borrowing to rate swings. If you want certainty on the new money too, a fixed-rate home equity loan, or a HELOC with a fixed-rate lock feature, trades some flexibility for a stable payment.

And the sober reminder for both tools: they are secured by your home. Turning unsecured debt into home-secured debt lowers the rate but raises the stakes — miss payments and the house is on the line. Borrowing against equity to invest or to fund consumption deserves the same skepticism laid out in paying off the mortgage vs. investing.

The tax angle

Interest on a cash-out refinance or a HELOC is only deductible if the money is used to buy, build, or substantially improve the home that secures the loan — and only if you itemize, which most households don't. Use the cash to consolidate credit cards or take a vacation and the interest isn't deductible at all. Use it to renovate the house and it may be, within the overall mortgage-interest limits. The full rules are in the mortgage interest deduction in 2026; don't let a hoped-for deduction drive the decision.

Choosing between them

  • Your current mortgage rate is low (below today's rates): favour a HELOC or home equity loan — don't re-price the whole balance.
  • Your current rate is at or above today's rates, and you want a large sum: a cash-out refinance can consolidate everything into one fixed payment, sometimes at a better rate than you have now.
  • You need flexible, staged access (a phased renovation): a HELOC's draw period fits.
  • You need a fixed amount once, with a predictable payment: a fixed-rate home equity loan, or a cash-out refinance if the rate math works.

Frequently asked questions

Is a HELOC or a cash-out refinance better?

It depends mostly on your current mortgage rate. A cash-out refinance re-prices your entire balance at today's rate, so if your existing rate is low it can be very expensive; a HELOC leaves the first mortgage alone and charges today's rate only on the new money. If your current rate is at or above today's, a cash-out can be competitive.

Why would a HELOC be cheaper than a cash-out refinance if its rate is higher?

Because the HELOC's higher rate applies only to the new amount you borrow, while a cash-out refinance applies today's rate to your whole balance. Re-pricing a $250,000 balance from 3.5% to 6.5% adds about $625 a month in interest — far more than the rate difference on a small HELOC draw.

What is the difference between a HELOC and a home equity loan?

A HELOC is a revolving, usually variable-rate line you draw from as needed, with a draw period then a repayment period. A home equity loan is a one-time lump sum at a fixed rate with fixed payments. Use a HELOC for flexible or staged borrowing, a home equity loan for a set amount with a predictable payment.

Is HELOC or cash-out interest tax deductible?

Only if you use the money to buy, build, or substantially improve the home securing the loan, and only if you itemize. Interest on cash used for other purposes — debt consolidation, a car, a vacation — is not deductible. Don't let a possible deduction drive the choice.

What happens when a HELOC draw period ends?

The repayment period begins — often 20 years — and your payment rises from interest-only to full principal-and-interest so the balance is paid off. Borrowers used to small interest-only payments are often surprised by the jump, so plan for it before the draw period closes.

Mortgage Ledger publishes educational information, not personalized financial, legal, tax, lending, or investment advice. The figures here are estimates built on stated assumptions and will not match a lender’s underwriting exactly. Confirm any number that matters against your Loan Estimate and a licensed professional before you act on it.

Sources

Dominic Wu

Writes and maintains every calculator and guide on Mortgage Ledger. Background in corporate real estate operations; not a licensed loan officer, mortgage broker, CPA, or financial adviser. Report an error.