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HELOC vs Refinance

HELOC vs refinance: the smartest way to tap your home equity

Both let you turn home equity into cash, but they work very differently. A refinance replaces your whole mortgage with a new, larger one at today's rate. A HELOC adds a revolving line of credit you draw on as needed. The right choice depends on how much you need, whether it's one-time or ongoing, and what rate you'd give up by refinancing.

Refinance = one lump sumHELOC = reusable creditDon't disturb a low rateBoth capped at 80% LTVDecision in 5 minutes
5-star rated| FSRA #13737| 5-min pre-qualification

Written by the Mortgage Squad Advisors Editorial Team · Reviewed by the Principal Broker, FSRA #13737 · Updated June 2026

The short answer

Refinance if you need a single lump sum and your current mortgage rate isn't much lower than today's — you replace the mortgage, get the cash, and keep one predictable payment. Choose a HELOC if you want flexible, reusable access to equity (renovations in stages, a buffer, ongoing needs) or if you have a great low rate you don't want to disturb — the HELOC sits behind your existing mortgage so you keep that rate. A second mortgage is the fallback when you need a lump sum but can't or shouldn't touch the first mortgage. All three are capped at 80% of your home's value combined.

At a glance

Which one is built for you?

A

Refinance

Replace your existing mortgage with a new, larger one at current rates. The difference comes to you as a lump sum. One mortgage, one payment.

Best for
  • You need a single large lump sum (debt consolidation, big renovation)
  • Your current rate is near or above today's rates
  • You want the lowest possible rate on the borrowed amount
  • You're at renewal anyway — no break penalty to refinance then
B

HELOC

A revolving line of credit secured by your home, sitting behind your existing mortgage. Borrow, repay, and re-borrow as needed — interest only on what you use.

Best for
  • You want flexible, reusable access (staged renos, a safety buffer)
  • You have a low mortgage rate you don't want to break
  • You only need money intermittently, not all at once
  • You want interest-only payments on the drawn balance
Side by side

The full comparison

FactorRefinanceHELOC
How you get the moneyOne lump sum at closingDraw as needed, anytime, up to your limit
Interest rateMortgage rate (lower)Variable, usually prime + a bit (higher than a mortgage)
Pay interest onThe full borrowed amountOnly what you've actually drawn
Touches your existing mortgage?Yes — replaces it (possible break penalty mid-term)No — sits behind it; your rate is untouched
PaymentFixed principal + interestInterest-only minimum on the drawn balance
Reusable?No — re-borrowing means refinancing againYes — repay and redraw freely
Max you can accessUp to 80% of home valueUp to 65% on the revolving line (80% combined with the mortgage)
Best forOne-time, large, known amountOngoing, flexible, or uncertain amounts
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How a refinance gives you equity

When you refinance, you break your current mortgage and replace it with a new one for a larger amount — up to 80% of your home's appraised value. The new mortgage pays off the old balance, and the extra is yours as a lump sum. Because it's a mortgage, you get a mortgage rate, which is lower than almost any other way to borrow.

The catch is timing. If you refinance in the middle of a term, you'll pay a break penalty on the old mortgage — three months' interest on a variable, or the potentially much larger IRD on a fixed (estimate yours with our penalty calculator). And if your current rate is well below today's rates, refinancing means giving up that cheap money on your entire balance, not just the new portion. That's the single biggest reason people choose a HELOC instead.

How a HELOC works — and why it protects a low rate

A HELOC is a revolving line of credit secured against your home, registered behind your existing mortgage. You're approved for a limit (the revolving portion can go up to 65% of your home's value, or up to 80% combined with your mortgage), and then you draw whatever you need, whenever you need it. You pay interest only on the amount you've actually used, and as you repay, that room frees up to borrow again.

The key advantage: because the HELOC sits behind your mortgage rather than replacing it, your existing mortgage rate is untouched. If you locked a great rate, a HELOC lets you access equity without disturbing it. The tradeoff is that a HELOC's rate is variable and higher than a mortgage rate — so it's ideal for flexible or shorter-term borrowing, less so for a large balance you'll carry for many years.

Where a second mortgage fits in

There's a third option people forget: a second mortgage. Like a HELOC, it sits behind your first mortgage and leaves it untouched — but it's a lump sum at a fixed term rather than a revolving line. Second mortgages typically come from alternative or private lenders at higher rates, so they're not a first choice. But they shine in specific cases: you need a lump sum, you have a low first-mortgage rate worth protecting, and you either can't qualify for a HELOC (income or credit) or need to close faster than a HELOC allows. We compare all three so the most expensive option is never the default. Our five-factor guide walks through the decision.

The 80% rule and the real decision

Whichever route you take, regulated lenders cap your total borrowing against the home at 80% of its appraised value — your existing mortgage plus whatever you add. So the first step is always the same: figure out your available equity. After that, the decision narrows to three honest questions. One: is this a single known amount, or will you need to dip in repeatedly? (Lump sum → refinance or second mortgage; ongoing → HELOC.) Two: how does your current mortgage rate compare to today's? (Much lower → don't refinance; protect it with a HELOC or second.) Three: are you mid-term, and what's the break penalty? Answer those and the right product is usually obvious. If you'd rather just talk it through, Maya can model your equity in minutes, any time.

Your situation

Which is right for you?

Consolidating high-interest debt into one payment

Usually: Refinance

A lump sum at a mortgage rate, rolled into one payment, usually beats juggling cards and loans — provided your current rate isn't far below today's.

Renovating in stages over a year or two

Usually: HELOC

Draw as each phase comes due and pay interest only on what you've used. Far more efficient than borrowing it all up front.

You have a 1.x% pandemic-era rate

Usually: HELOC or second

Don't refinance and lose that rate on your whole balance. Layer a HELOC (or a second mortgage) behind it to access equity while keeping the cheap money.

You're at renewal and need cash

Usually: Refinance

At renewal there's no break penalty, so refinancing to a larger amount is clean and gets you the lowest rate on the new funds.

FAQ

Common questions, answered.

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Is it better to refinance or get a HELOC?
Refinance when you need one lump sum and your current rate is near today's — you get the lowest rate and a single payment. Choose a HELOC when you want flexible, reusable access, only need money intermittently, or have a low mortgage rate you don't want to break. The deciding factors are usually lump-sum-vs-ongoing and how your current rate compares to today's.
Does a HELOC affect my existing mortgage rate?
No. A HELOC is registered behind your existing mortgage and leaves it completely intact, so you keep your current rate. That's exactly why HELOCs are popular with people who locked a low rate — they can access equity without giving that rate up by refinancing.
How much equity can I access?
Regulated lenders cap total borrowing against your home at 80% of its appraised value, including your existing mortgage. Within that, a HELOC's revolving portion can go up to 65% of the home's value. So if your home is worth $800,000, your mortgage plus any HELOC or second mortgage can total up to $640,000.
Will refinancing cost me a penalty?
If you refinance mid-term, yes — you break the existing mortgage and pay a penalty (three months' interest on a variable, or the greater of that or IRD on a fixed). If you refinance at renewal, there's no penalty. Estimate your penalty with our prepayment penalty calculator before deciding.
When does a second mortgage make more sense than a HELOC?
When you need a lump sum, want to protect a low first-mortgage rate, and either can't qualify for a HELOC (tighter income/credit rules) or need to close quickly. Second mortgages carry higher rates, so they're a targeted tool rather than a default — but for the right situation they're the cleanest fit.

Keep exploring

HELOCRefinanceSecond mortgageHELOC vs second mortgageDebt consolidationHELOC calculatorRefinance calculatorRenovation financing5 ways to chooseBest uses of home equity
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