HELOC vs second mortgage:
which way to borrow
against your equity?
Both sit behind your existing mortgage and let you tap home equity without touching your first-mortgage rate. A HELOC gives you flexible, reusable credit — a second mortgage delivers a lump sum fast.
What's the difference between
a HELOC and a second mortgage?
Both sit in second position behind your first mortgage. Everything else — structure, rate, qualifying, speed — differs substantially.
Revolving line vs one-time lump sum
A HELOC is a revolving credit facility — draw what you need, repay, and re-borrow up to your limit. A second mortgage delivers a single lump sum up front. That one difference drives most of the decision.
Lower variable vs higher fixed
HELOCs come from A-lenders at prime plus a small margin — typically the cheapest home-equity rate available. Second mortgages carry a higher rate because they usually come from alternative or private lenders pricing for easier qualifying and faster funding.
Income-driven vs equity-driven
A HELOC needs full income documentation, solid credit, and a stress-test pass. A second mortgage is underwritten mainly on your home equity — it approves many borrowers a HELOC won't, including the self-employed and those with bruised credit.
Weeks vs days to funding
A HELOC goes through full A-lender underwriting — expect several weeks from application to close. A second mortgage from an alternative or private lender can fund in days, which is why it's the go-to for time-sensitive needs.
How to choose the
right product.
Three questions answer it for most borrowers. We walk every file through this before recommending anything.
Know your situation
Three questions: What's your home worth vs what you owe (available equity at 80% LTV)? Do you have provable income and solid credit? Do you need money once or on an ongoing basis?
Compare on the factors that matter
If you qualify and want the lowest rate with flexible, reusable access — HELOC. If you need a lump sum fast, can't pass full income documentation, or want a fixed payment — second mortgage. We model both side by side.
Get matched to the right product
We shop both HELOC options and second mortgage options across 100+ lenders and present the best fit for your situation — with full fee disclosure before you commit a dollar.
Find your situation
below.
Tap any scenario to see which product fits and why.
If you’re…Renovating in phases over a year
Renovating in phases over a year
Draw as each stage comes due and pay interest only on what you've used — far cheaper than taking a full lump sum up front.
Explore HELOC optionsIf you’re…Self-employed and needing $60k for one project
Self-employed and needing $60k for one project
If your income won't pass a HELOC's documentation test, an equity-based second mortgage approves and funds fast — often within days.
Explore second mortgage optionsIf you’re…Urgent: arrears or a power-of-sale deadline
Urgent: arrears or a power-of-sale deadline
Speed wins. A private second mortgage can fund in days to solve the emergency — then you refinance to cheaper money once you're stable.
Get funded fastIf you’re…Strong income and wanting a long-term equity buffer
Strong income and wanting a long-term equity buffer
Lowest rate, reusable, interest-only — the ideal standing line of credit if you qualify and don't need it all at once.
Check my HELOC eligibilityIf you’re…Great credit and wanting the absolute lowest rate
Great credit and wanting the absolute lowest rate
With solid credit and verifiable income, a HELOC from an A-lender gives you the lowest home-equity rate available — typically prime plus a small margin, with interest only on what you draw.
See my best rateIf you’re…Consolidating debt but unable to qualify at a bank
Consolidating debt but unable to qualify at a bank
A second mortgage underwritten on your home equity can consolidate high-interest debts even without full income documentation — buying you time to restore your rate profile.
Explore debt consolidationHELOC vs second mortgage:
every factor compared.
Eight factors. One decision. We compare every angle so the most expensive route is never the default.
- You have provable income and solid credit to qualify
- Staged or uncertain needs (renovations, a safety buffer)
- You want the lowest rate and interest-only flexibility
- Ongoing access matters more than a single lump sum
- You need a lump sum quickly
- You can't qualify for a HELOC (self-employed, credit, ratios)
- You want a fixed payment and defined term
- Time-sensitive needs — power of sale, CRA arrears, fast close
| Factor | HELOC | Second Mortgage |
|---|---|---|
| Structure | Revolving line of credit | One-time lump sum |
| Rate | Lower; variable (prime + a bit) | Higher; often fixed for the term |
| Typical lender | Banks & monolines (A) | Alternative / private lenders |
| Qualifying | Stricter — income + credit + stress test | Easier — equity-driven |
| Speed to fund | Slower (full underwriting) | Fast — days, not weeks |
| Payments | Interest-only on the drawn balance | Fixed payment (often interest-only) for the term |
| Reusable? | Yes — repay and redraw | No — one advance |
| Max access | Up to 65% on the line (80% combined) | Commonly up to 80% combined; some private lenders go higher at a higher cost |
Can't qualify or need money fast? Second mortgage wins.
Common questions,
clear answers.
Rates, qualifying, access limits, and when to refinance instead — answered plainly.
Is a HELOC a type of second mortgage?
Technically a HELOC registered behind your first mortgage is a form of second-position lending, but in everyday use the terms mean different products. A 'HELOC' is revolving credit from an A lender at a lower variable rate; a 'second mortgage' usually means a fixed lump sum from an alternative or private lender. The practical differences are structure (line vs lump sum), rate, and how hard they are to qualify for.
Which is cheaper, a HELOC or a second mortgage?
A HELOC is almost always cheaper — it comes from an A lender at a lower variable rate (prime plus a small margin) and you pay interest only on what you draw. A second mortgage carries a higher rate because it's typically from an alternative or private lender and is underwritten on equity rather than income. You pay that premium for easier qualifying and faster funding.
Can I get a second mortgage if I can't qualify for a HELOC?
Often yes. Second mortgages are underwritten mainly on your home equity rather than your income and credit, so they approve many borrowers a HELOC won't — the self-employed, those with bruised credit, or anyone with tight debt ratios. They also fund much faster, which is why they're common for time-sensitive needs.
How much can I borrow with either one?
With a regulated lender, your total borrowing against the home (first mortgage plus the HELOC or second) stays within 80% of the appraised value, and a HELOC's revolving portion is limited to 65% of the home's value. So on an $800,000 home, your mortgage plus the new borrowing can total up to $640,000. Some private second-mortgage lenders go above 80% on strong files, at a higher rate plus fees.
Should I just refinance instead?
Maybe. A HELOC or second mortgage is best when you want to protect a low existing first-mortgage rate, since they sit behind it untouched. But if your current rate is close to today's rates, or you're at renewal, refinancing everything into one new mortgage at a single low rate can be cheaper than layering a higher-rate second on top. Compare all three before deciding.
We’ll try to beat your rate.
If we can’t, we pay you $500.¹
¹ Rate Beat: eligible Big-6 bank written offers only · same product, term & amount · $500 paid to you or your nominated charity at closing · conditions apply
Find a mortgage specialist in your city
HELOC and second mortgage rules are national, but your equity access and rate options vary by lender density and property values in your market. Our advisors work across Canada and match you to the right product for your city.