Line of Credit vs. Credit Card vs. Personal Loan: What's Actually Cheaper

When Canadians need to borrow money — for debt consolidation, an unexpected expense, or a planned purchase — three products usually come up: a line of credit, a credit card, or a personal loan. They can look similar on the surface, but they're structured very differently, and that structure affects both what they cost and how easy it is to get stuck carrying a balance.

This guide compares all three side by side, so it's clear which product actually fits a given situation — and why "which is cheapest" depends heavily on how it's used, not just the interest rate printed on the offer.

Why it matters

Choosing the wrong product for the job can cost hundreds or thousands of dollars in avoidable interest. A credit card used for a large one-time expense that takes years to pay off is a very different cost story than a personal loan used for the same expense — even though both involve borrowing the same amount.

This comparison matters even more given recent debt trends: Canadians carrying non-mortgage debt owed an average of $28,118 as of the second quarter of 2026, up sharply from a year earlier, with growth spread across auto loans, lines of credit, personal loans, and credit cards alike.

The three products, side by side

Line of credit

• Structure: Revolving. Borrow, repay, borrow again, up to a limit, with no fixed end date.
• Interest: Charged daily, only on the amount actually drawn.
• Typical rate range: Unsecured personal lines of credit are individually underwritten based on the borrower's credit profile, so there's no single published rate — but they generally price somewhere between roughly prime plus 1% and prime plus 8%, depending on creditworthiness and the lender. With prime at 4.45% as of late 2026, that's a rough range of about 5.5% to 12%-plus, always confirmed at time of application.
• Repayment: The minimum payment is usually interest-only, meaning the balance doesn't shrink unless more than the minimum is paid.
• Best suited for: Ongoing, unpredictable borrowing needs where flexibility matters more than a fixed payoff date.

Credit card

• Structure: Revolving, with a defined billing cycle and (usually) an interest-free grace period on new purchases if the previous balance is paid in full.
• Interest: Charged on any balance carried past the due date; typical average rates in Canada run in the 19.99%–20.99% range for standard cards.
• Repayment: The minimum payment is a small percentage of the balance plus any interest and fees — also structured in a way that can leave a balance outstanding for a very long time if only the minimum is paid.
• Best suited for: Day-to-day spending paid off monthly, building payment history, and purchases with built-in consumer protections — not for carrying a long-term balance, given the rate.

Personal loan

• Structure: Installment. A fixed lump sum arrives upfront, repaid in equal payments over a set term.
• Interest: Usually fixed for the life of the loan, so the rate and payment don't change month to month.
• Typical rate range: Varies by lender and credit profile; tends to be higher than a strong-credit-profile line of credit but more predictable, since it's fixed rather than variable and tied to prime.
• Repayment: Every payment includes both interest and principal, so the balance is guaranteed to reach zero by the end of the term — there's no interest-only trap.
• Best suited for: A known, one-time amount to be paid off on a defined schedule — debt consolidation being the most common use.

Why revolving vs. installment matters more than the rate

The single biggest cost driver isn't always the interest rate — it's whether the product forces principal repayment. A personal loan, by design, is paid off on schedule. A credit card or line of credit, by design, can be carried indefinitely if only the minimum is paid.

This means a line of credit at 8% carried for eight years with only interest-only minimums paid can end up costing more in total interest than a personal loan at 11% paid off on a structured four-year schedule — because the loan's principal is actively shrinking the whole time, while the line of credit's isn't. The "cheaper" product on paper isn't necessarily the cheaper product in practice; it depends on the borrower's actual repayment behaviour.

A debt consolidation example

Consider someone carrying $12,000 across two credit cards at roughly 20% interest, paying $350 a month combined. At that rate and payment, it would take years to clear the balance, with a large share of every payment going to interest rather than principal.

Consolidating that $12,000 onto a personal loan at a lower, fixed rate with a defined term forces a payoff date and locks in a predictable payment — a structural advantage for someone who wants certainty and a hard deadline. Consolidating onto a line of credit at a similar or lower rate can also reduce the interest cost significantly compared to credit cards, but only if the borrower commits to paying meaningfully more than the interest-only minimum every month; otherwise, the debt simply moves from one revolving product to another without ever actually shrinking.

Neither option is universally "better" — it depends on whether the flexibility of revolving credit or the built-in discipline of a fixed schedule fits the borrower better.

Common mistakes

• Comparing only the advertised interest rate, without factoring in whether the product structurally requires principal repayment.
• Using a credit card for a large one-time expense and treating the minimum payment as an acceptable long-term plan, given how high typical credit card rates run.
• Consolidating debt onto a line of credit and continuing to pay only the interest-only minimum, which can leave the total amount owed essentially unchanged years later.
• Not accounting for credit utilization. Because both credit cards and lines of credit are revolving credit, high balances on either can raise a utilization ratio and affect a credit score — a personal loan (installment credit) doesn't factor into utilization the same way.
• Assuming a lower limit product is "safer." A smaller credit card limit at a high rate can still generate significant interest costs if carried long enough; the size of the limit isn't the same as the cost of the debt.

Sources

• Financial Consumer Agency of Canada, "Debt consolidation"
• Bank of Canada, policy interest rate

This article is for general educational purposes and does not constitute financial or legal advice. Interest rates cited are general ranges as of late 2026 and change regularly; always confirm current rates directly with lenders before making a borrowing decision. This is not a recommendation of any specific institution or product.

What to do next

Working out which of the three products actually forces principal repayment — and whether that fits how disciplined the repayment plan realistically will be — is the most useful next step before choosing between them. For the mechanics of how a line of credit's interest-only minimum payment works, see How a Line of Credit Actually Works in Canada. For the specific consumer protections around a line of credit's limit, see Your Rights When a Bank Raises Your Line of Credit Limit.