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HELOC vs. cash-out refi: don’t give up a rate you’ll never see again.

Both turn home equity into cash. The right one depends on a single question most borrowers skip: what happens to the mortgage rate you already have?

MA
Reviewed by Moh Alloo, Mortgage Loan Originator · NMLS #2732105 · West Capital Lending
Updated July 6, 2026

The mechanics, in one minute

The rate-you-keep argument

If your first mortgage carries a rate from the 2020–2021 era — say 3% on $380,000 — a cash-out refi replaces cheap money with today’s pricing on the whole balance to extract the cash. A HELOC prices higher on the drawn amount only, while your $380,000 keeps its 3%. For most low-rate-first-mortgage households borrowing a moderate amount, the blended cost of a second lien beats repricing everything. The refi wins when your existing rate is already at or above market, when you want one fixed payment, or when the amount is so large the second-lien premium overwhelms the blend.

How much you can pull

FactorCash-out refiHELOC / HELOAN
Max combined LTV80% of value (VA can go higher)80–85% CLTV on most programs
Rate structureFixed (typically)Variable line or fixed HELOAN
Closing costsFull refi costs on the whole loanLow or no closing costs on many programs
Speed3–6 weeksFintech closes run 5–10 days
First mortgageReplacedUntouched

DTI applies to both

Home-equity borrowing is consumer credit: lenders verify you can repay. Your existing housing payment, the new equity payment, and all monthly debts get measured against gross income — most programs want the total at or under 43–50%. If the draw pushes you over, a longer term, a smaller draw, or paying off a tradeline at closing usually fixes it.

Watch the fine print on fast HELOCs

The 5–7-day fintech closes are real, but read for: rate premiums for speed, early-closure fees if you pay the line off inside ~3 years, and AVM valuations that run conservative — a full appraisal is slower but can unlock a bigger line. Trust vesting also knocks out most of the fastest closers; closing individually and deeding back into the trust afterward is the standard workaround (clear it with your estate attorney).

Price your home-equity scenario in minutes

Enter value, balance, and the draw you want — CLTV ceilings, DTI, and three speed-vs-price structures compute live. No documents, no login — live indicative pricing as you answer, then a licensed loan officer reviews your exact scenario.

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Frequently asked questions

Does a HELOC change my existing mortgage rate?
No. A HELOC is a second lien — your first mortgage, its rate, and its payment are untouched. That is the core reason it usually beats a cash-out refi for borrowers holding a low legacy rate.
How much equity can I access?
Most programs allow borrowing up to 80–85% of home value combined across both liens. Value × CLTV cap − current balance = your ceiling.
HELOC or HELOAN — line or lump sum?
A line fits ongoing or uncertain costs (renovation phases, tuition) since you pay interest only on what you draw. A fixed HELOAN fits one-time known amounts (debt consolidation) with payment certainty.
Is HELOC interest tax-deductible?
Only when proceeds buy, build, or substantially improve the home securing the loan, and subject to combined loan limits. Consolidating cards or buying a car with it is not deductible. Confirm with your tax professional.
How fast can a HELOC actually close?
Fintech-style lenders close in 5–7 business days using AVM valuations. Traditional bank HELOCs run 2–6 weeks. Speed usually costs a rate premium, and trust-vested title slows the fastest lanes.