Line of Credit or Credit Card in Canada: Which One Fits Your Borrowing?

A line of credit usually costs less for ongoing borrowing; a credit card wins on convenience. The pick depends on whether you repay fast or carry a balance.

By Promissory.ca Editorial Team Reviewed against official Canadian sources Last updated: 2026-09-16

A line of credit and a credit card are both revolving products: you can borrow, repay and borrow again up to a limit. The differences lie in how interest is calculated, how much repayment control you have, and what each product is built to do.

What each product actually is

How a line of credit works

A line of credit is a revolving loan from a financial institution. You are approved for a limit, draw only what you need, and pay interest on the outstanding balance. Many lines of credit are unsecured, while a home equity line of credit is secured against your property and generally costs less because the lender holds collateral. Repayment is flexible: you can usually pay interest only, a set percentage of the balance, or the whole amount whenever you choose. There is no interest-free period, so a line of credit is a poor tool if you want to float a purchase for a few weeks at no cost.

How a credit card works

A credit card is also revolving, but on a different rhythm. Most cards offer a grace period: pay the statement balance in full by the due date and you owe no interest on purchases. Carry a balance and interest applies, often from the transaction date. Cards bundle features a line of credit does not — rewards, insurance, fraud protection and near-universal merchant acceptance. Cash advances usually start accruing interest immediately and can attract a separate fee.

Cost: where the real difference shows up

Cards are priced for convenience and short-term borrowing. Lines of credit are priced for larger balances held longer, and their rate is generally lower, especially when secured. Rates vary by lender, credit history and collateral, so the only meaningful comparison is the rate you are offered in writing.

Interest runs on a different clock

On a line of credit, interest is normally calculated daily on the balance you owe, so every dollar you repay immediately reduces the next day's cost. On a card, the grace period makes timing everything: clear the statement balance and your interest cost is nothing, carry part of it and interest works against you. A card can therefore be cheaper for a purchase you repay within the statement period, and far more expensive for a balance you leave sitting for months.

Fees and extras

Lines of credit generally carry few ongoing fees, though a secured line may involve setup or appraisal costs, and some lenders charge an annual fee for keeping it available. Cards can carry annual fees, foreign exchange markups, cash advance fees and over-limit charges. Neither product should be judged on fees alone: a card with an annual fee can be good value for someone who pays in full and uses the benefits, while a no-fee line of credit can still be costly if the balance never shrinks.

Flexibility: access, repayment and control

Everyday access

Cards win on convenience. They are accepted almost everywhere, work online and can be loaded into a mobile wallet. A line of credit is less convenient for daily spending: you typically move money into your chequing account, use convenience cheques, or direct it toward one specific purchase. Some lines of credit come with an access card, but the everyday experience remains less seamless than tapping a credit card.

Repayment control

Here the line of credit wins. The required payment is often interest only or a small percentage of the balance, so you can pay far more than the minimum without penalty and treat the balance as a project with a finish line. A credit card sets a minimum payment that is usually a small fraction of what you owe, and paying only that minimum is the slowest and most expensive way to clear debt.

Limits and scale

Lines of credit often come with higher limits than a typical card, and a home equity line of credit can be substantial because it is tied to your home's value. That suits a renovation, tuition or a business cash-flow gap. It also means the amount you could borrow is larger than the amount you should borrow, so a limit is not a spending plan. Federally regulated lenders must also qualify borrowers at the greater of the contract rate plus two percentage points or 5.25% under OSFI Guideline B-20, which shapes how much home-secured credit you may be approved for.

How each product affects your credit file

Equifax Canada and TransUnion Canada are the two national credit bureaus, and both treat lines of credit and credit cards as revolving credit. A hard inquiry may affect a credit score, while a soft inquiry does not, so several applications in a short window can leave a mark. What matters most is utilization — the balance you carry relative to your limit. Adding a line of credit and leaving it undrawn increases your available credit and can lower your overall utilization ratio. Running a card close to its limit does the opposite, even if you pay on time.

When a line of credit makes sense

• You are consolidating higher-cost debt into one balance you plan to repay steadily.
• You face a large, planned expense such as a renovation, a move, tuition or a major repair.
• Your income is uneven and you want a buffer for months when expenses outrun receipts.
• You expect to carry a balance for several months and want interest charged only on what you owe.
• You want the freedom to overpay whenever you can without a penalty.

When a credit card makes sense

1. You pay the statement balance in full every month and treat the card as a payment tool, not a loan.
2. You want rewards, insurance or purchase protection a line of credit does not offer.
3. You need acceptance online, abroad or at a terminal, where a line of credit is clumsy.
4. You need a short, predictable float between paycheques and can clear it by the due date.
5. You want a small emergency buffer without opening another loan product.

Where the law sets the outer limits

Canada caps the cost of credit through criminal law and specific regulations. The criminal rate of interest is 35% APR, reduced from 48% under amendments to the Criminal Code (s.347). Payday loans sit under their own regime: where a province permits them, the cost is capped at $14 per $100 borrowed, the dishonoured-payment fee is capped at $20, and the maximum payday loan is $1,500. Quebec does not permit payday lending, and the maximum rate of credit there is 35% per year. These limits do not make expensive credit affordable; they mark where a lender crosses a legal line.

Paperwork matters too. A promissory note — a written, signed, unconditional promise to pay a sum certain in money under the Bills of Exchange Act — is a binding document, so read it before signing rather than after. PIPEDA governs how organisations handle personal information, so a lender needs your informed consent to collect and use your credit details.

Practical habits that keep both products working

• Compare total cost of borrowing using your own statement figures, not just a headline rate.
• Keep the balance on whichever product you choose well below the limit.
• Automate at least the minimum payment so a busy month cannot damage your credit file.
• Match the product to the timeline: weeks on a card you clear, months on a line of credit you pay down.
• If you are self-employed, plan for CRA instalment dates — 15 March, 15 June, 15 September and 15 December — since instalments may apply when net tax owing exceeds $3,000 for the current year and either of the two prior years, or $1,800 in Quebec. Farmers and fishers have a single due date of 31 December.