HELOC vs refinance: which costs less for $50,000?

Short answer: In the HELOC vs refinance decision for $50,000, timing usually decides it. Mid-term, a home equity line of credit (HELOC) often costs less, because refinancing means breaking your closed mortgage and paying a prepayment penalty, usually the higher of three months' interest or the interest rate differential (IRD) ^[3]. At renewal there's no penalty, so adding $50,000 to your mortgage often costs less, because the money gets a mortgage rate you can fix ^[1][3].

This guide runs the numbers on one $50,000 example both ways. If you're new to the products themselves, our complete mortgage refinance guide covers refinancing end to end, and our home equity line of credit page explains how a HELOC works with us.

HELOC vs refinance at a glance

The example: borrowing $50,000

Here's the setup we'll use (illustrative):

• Home value: $800,000
• Current mortgage: $450,000 at 4.29% fixed, with 3 years left on a 5-year term
• Goal: $50,000 for a renovation or to pay off higher-interest debt
• HELOC rate: prime plus 0.5%. The Bank of Canada's published prime rate was 4.45% for the week of October 21, 2026, alongside a 2.25% policy rate ^[7], so we use 4.95%
• Refinance rate: 4.29% fixed for the new money
• Setup costs (appraisal, legal, title): assumed $1,000 for either option. FCAC lists these fees but not amounts, so get quotes ^[1][2]

Equity check: $450,000 + $50,000 = $500,000, or 62.5% of value. That fits under the 65% HELOC cap and the 80% refinance limit ^[2][5]. FCAC notes a standalone HELOC usually needs more than 35% equity, and you'd have 43.75% here before the draw ^[1].

Want to see both options with your numbers? A licensed 8Twelve agent can price a HELOC and a refinance side by side across 65+ lenders, OAC. Compare your equity options

Which costs less mid-term?

If you're three years from renewal, the HELOC leaves your current mortgage alone. The refinance means breaking it.

Assumptions: the HELOC rate stays at 4.95% (it's variable and can change); mortgage interest uses semi-annual compounding; the penalty applies to the full $450,000 balance. Three months' interest = $450,000 × 4.29% ÷ 4. Simplified IRD = balance × rate gap × 3 years left, for gaps of 0.5 to 1 point. Checked in Python.

What it shows: the HELOC's rate is higher, but the penalty for breaking the mortgage outweighs that difference several times over. A refinance mid-term only tends to win if it also cuts the rate on your whole existing balance by enough to cover the penalty, or if your lender lets you add money without breaking the term. If rates for your remaining term are higher than your contract rate, the IRD usually doesn't apply, and the penalty is more likely three months' interest ^[3].

For more on penalties and fees, see what it costs to refinance in Canada.

Which costs less at renewal?

At the end of your term there's no prepayment penalty ^[3], so the comparison changes:

With no penalty, the lower mortgage rate makes the refinance about $950 cheaper here, and the rate is fixed for the term. The gap depends on the rates you're offered, so compare real quotes. Because the HELOC's rate is variable, its cost can move in either direction over five years ^[1].

What if the prime rate changes?

A HELOC's rate usually floats with your lender's prime rate, and prime can change when the Bank of Canada changes its policy rate ^[1]. Here's how much that moves the cost of repaying $50,000 over five years, assuming the new rate held for the whole period (illustrative):

A half-point move changes the five-year interest by roughly $700 either way. In the mid-term example, the HELOC still costs less than breaking the mortgage even at the higher rate. If you'd rather have certainty, in our experience some lenders that combine a HELOC with a mortgage let you lock part of the balance into a fixed-rate term; ask what's available.

How each option shows up in your debt ratios

Lenders count both options in your total debt service (TDS) ratio, but differently. For insured mortgages, CMHC requires lenders to count a HELOC as at least the payment on the balance spread over 25 years at the contract rate, about $291 a month for $50,000 at 4.95% ^[8]. A refinance adds the $50,000 to your mortgage, which is qualified at the stress-test rate: about $329 a month at 6.29% over 25 years ^[6][8]. Uninsured lenders set their own methods, so a broker can check which version helps you qualify. Our guide to GDS and TDS ratios shows how lenders count these payments.

The hidden cost: how you repay it

The biggest difference often isn't the product. It's the payment plan:

FCAC warns that if you only pay the interest on a HELOC, you won't pay off the loan ^[1]. Spreading $50,000 over 25 years in a refinance keeps the payment low, but in this example it adds up to about $31,279 of interest over the full amortization. If you choose either option, set a payoff date you can live with.

Pros and cons

HELOC

• Pros: no penalty on your existing mortgage, interest only on what you use, repay any time without a penalty ^[1].
• Cons: variable rate, the temptation of easy access to funds, and interest-only payments that don't reduce the balance ^[1].

Refinance

• Pros: usually a lower rate than a HELOC, can be fixed, and one payment with a built-in payoff schedule.
• Cons: a penalty if you're mid-term ^[3], setup fees ^[4], and you have to qualify again at the stress-test rate ^[6].

Step by step: choosing with a broker

1. Find your maturity date and ask your lender for a written penalty quote ^[3].
2. Decide how long you'll take to repay the $50,000.
3. Check equity against the 65% and 80% limits ^[2][5].
4. Have a broker check qualification at the stress-test rate for both options ^[6].
5. Compare total cost over your payoff period, including penalties and setup fees.
6. Ask about alternatives: if you're close to renewal, waiting or an early renewal may beat both.

When neither is the best fit

• You're within months of renewal: waiting avoids the penalty, and you can refinance then.
• You've made prepayments: FCAC notes your lender may let you re-borrow prepaid amounts, often with no fees ^[2].
• It's a renovation: see our renovation financing options.
• Your debt ratios are tight: our guide to mortgage refinance requirements explains what lenders check.
• A second mortgage can avoid breaking your first one, but it usually costs more ^[2]. 8Twelve arranges these through third-party lenders; we don't lend or fund private mortgages.

From our desk: Many people come in asking for a refinance when a HELOC would save them thousands mid-term, and the reverse at renewal. The date on your renewal statement is often the most important number in the decision.

For $50,000, a HELOC usually costs less mid-term and a refinance usually costs less at renewal, but your repayment plan matters as much as the product you choose. Get a penalty quote and real rate offers, then compare total cost over the time you'll take to pay it back.

Run the numbers: see how a new payment would look with our mortgage payment calculator, or read how debt consolidation mortgages compare.

This article is for general information only and isn't financial, legal or tax advice. Rates, products and terms change without notice and are available on approved credit (OAC). The rate and terms you qualify for depend on your individual financial situation, including credit, income, property and loan-to-value. "Best rates" means the most suitable options available for your situation, not a guarantee of the lowest rate. Example rates and payments are for illustration only, as of October 2026, and are not an offer. 8Twelve Mortgage arranges mortgages through 65+ lenders and does not lend directly. Licensed across Canada — see our licences.

Example rates are for illustration only, as of October 25, 2026, and are not an offer. Your actual rate depends on your situation, OAC. The HELOC and refinance examples use an assumed home value, balance, rates and setup costs, with semi-annual compounding for fixed rates and a simplified IRD; your lender's penalty calculation will differ. 8Twelve does not fund second or private mortgages; we arrange them with third-party lenders, and lender and brokerage fees are disclosed in writing before you commit. Rules checked against FCAC, OSFI, CMHC and the Bank of Canada on October 26, 2026.