Lines of Credit in Canada: How They Work

What it is

A line of credit is a pre-approved pool of money you can borrow from, repay, and borrow from again — like a credit card with much lower interest and much higher limits, but without the interest-free grace period. The bank approves you for a maximum (say $15,000), and you draw only what you need, when you need it. Interest is charged only on what you’ve actually borrowed.

How it works

1. You apply and the lender assesses your income, credit history, and (for secured versions) your assets. Approval comes with a credit limit.
2. You draw funds as needed — by transfer to your chequing account, cheques, or sometimes a linked card.
3. Interest accrues daily on the outstanding balance at a variable rate. There is no grace period: interest starts the day you borrow.
4. You make at least the minimum payment each month (often interest-only on some products), and any amount you repay becomes available to borrow again.
5. The rate is variable — it moves with the lender’s prime rate, so your borrowing cost rises and falls with Bank of Canada decisions.

Two main types: unsecured lines of credit (based purely on your creditworthiness) and secured ones — most commonly a HELOC, a Home Equity Line of Credit, secured against your home, with lower rates and larger limits.

What it’s used for

• A safety net for irregular expenses — the classic use is having it available and rarely touching it.
• Consolidating higher-interest debt (e.g., moving credit card balances to a lower rate).
• Planned large expenses like renovations (often via HELOC).
• Smoothing irregular income for freelancers and contractors.

Who it’s NOT for: covering everyday spending you can’t afford, or as a substitute for an emergency fund. A line of credit is borrowed money at variable rates — convenient, but still debt. And it’s definitely not for investing on leverage unless you deeply understand the risk.

Who provides it in Canada

All Big Five banks (RBC, TD, BMO, Scotiabank, CIBC), Desjardins, National Bank, Tangerine, Simplii, and most credit unions. HELOCs are offered by banks and monoline mortgage lenders.

What it costs

• Interest: variable, typically expressed as prime plus or minus a margin (e.g., “prime + 2%”). Check current rates and your offer letter — the margin depends on your credit profile, and HELOCs price lower than unsecured lines.
• Fees: some lenders charge annual fees or setup/registration fees (especially HELOCs, which involve legal registration against your property). Check the current fee schedule before signing.
• No interest on unused amounts — the available-but-untouched portion costs nothing, which is the whole point of having one as a backstop.

Newcomer notes

You’ll generally need a Canadian credit file with some history and proof of income — most newcomers won’t qualify on arrival. Build 6–12 months of credit history first (a credit card used well is the usual path), then ask your bank. A SIN is required for the application, and the lender will pull your Equifax or TransUnion file.

Risks / watch-outs

• Variable rates cut both ways. When rates rise, your minimum payment rises too — budget for it.
• Interest-only minimums are a trap. On some lines (notably HELOCs), the required payment may cover interest only, leaving the principal untouched for years. Pay more than the minimum whenever you can.
• Easy access enables bad habits. A five-figure credit line sitting in your banking app can quietly become lifestyle debt. Treat it as a fire extinguisher, not a wallet.
• HELOCs put your home at risk. Because the line is secured against your property, serious default can ultimately threaten the home itself.

FAQ

What’s the difference between a line of credit and a credit card? Both are revolving credit, but a line of credit has much lower interest rates, higher limits, no interest-free grace period, and no rewards. Cards are for spending you repay monthly; lines are for larger, planned borrowing or backup.

What’s the difference between a HELOC and an unsecured line of credit? A HELOC is secured against your home equity, so it offers lower rates and bigger limits — but your home is the collateral. An unsecured line needs no collateral but costs more in interest and is harder to qualify for.

Does applying hurt my credit score? The application creates a hard inquiry, which dings your score slightly and temporarily. Having the line and using little of it, paid on time, helps your score over time.

Can I get a line of credit with no credit history? Almost certainly not from a major lender. Build a file first with a credit card, then apply — many newcomers qualify within their first year or two.

Is the interest tax-deductible? Generally no for personal use. Interest may be deductible if the borrowed money is used to earn investment or business income (the Smith Manoeuvre is built on this) — but the tracing rules are strict, so get professional advice before assuming.

Educational content only — not financial advice. Rules and promotions change; verify current details with the provider or CRA.