How credit utilization affects your credit score in Canada

Credit utilization is the share of your available credit that you are actually using, shown as a percentage. In Canada it is one of the biggest factors in your Equifax and TransUnion credit score, second only to payment history, and FCAC recommends using less than 30 percent of the credit available to you. The good news: it has no memory, so the moment your reported balance drops, your score can recover.

Nothing here is financial advice. Always confirm the current rules on the FCAC and credit bureau pages linked below before acting.

What credit utilization actually is

Your credit utilization ratio (sometimes called the debt-to-credit ratio) compares the balance reported on your revolving credit to the total credit limit available to you. Revolving credit means credit cards and lines of credit, the kind that renews as you pay it off. It does not include instalment loans like a car loan or mortgage, which are measured differently.

The math is simple:

utilization = reported balance / total credit limit x 100

So a $300 balance on a card with a $1,000 limit is 30 percent utilization, the example Equifax Canada uses. Bureaus look at this two ways: per card and across all your revolving accounts combined. A single maxed-out card can drag you down even if your overall ratio looks fine, so both numbers matter.

How much it affects your score

Canadian credit scores run from 300 to 900. Payment history is the single biggest input, and credit utilization is the next most important factor. Equifax Canada lists your debt-to-credit ratio among the core things that shape your score and states that high utilization can lower it while low utilization can boost it.

There is no public formula. Equifax and TransUnion do not publish exact weightings, and FCAC notes the bureaus keep their models private. What is consistent across official sources is the direction: the more of your available credit you use, the higher the risk you appear to lenders, and the more your score can fall. The effect is gradual, not a cliff, and it tends to accelerate as you climb past the recommended range.

The 30 percent rule (and why lower is often better)

FCAC recommends keeping your credit card balances below 30 percent of your available credit limit. As FCAC puts it, if your total limit is $10,000, try to keep your total balance below $3,000. Treat 30 percent as a ceiling to stay under, not a target to hit.

In practice, lower is better. People with the strongest scores tend to report utilization in the single digits, not at 29 percent. If you are trying to maximize a score before a mortgage application, aiming for under 10 percent on the reported balance is a reasonable goal. There is no benefit to using zero across every card, though; some activity that you pay off shows the account is alive and being managed.

Reported utilization	General effect on score
Under 10%	Strongest, typical of high scorers
10% to 30%	Healthy, within the recommended range
30% to 60%	Starts to pull the score down
Over 60%	Significant downward pressure

These bands are directional guidance drawn from how the bureaus describe utilization, not a published formula.

The timing trap: when your balance gets reported

This is where most people get caught. Your issuer reports your balance to the bureaus roughly once a month, and the figure they send is typically your balance on the statement closing date, not your payment due date. That report is a snapshot. If you charged $900 on a $1,000 limit and the snapshot lands before you pay, the bureau sees 90 percent utilization, even if you pay the statement in full a few days later and never owe a cent of interest. Pay before the statement closes and a low balance (or $0) is what gets reported instead.

Two takeaways follow from this:

• Paying in full is great for avoiding interest (see how credit card interest works in Canada), but it does not guarantee low reported utilization on its own.
• To lower the number the bureau sees, make a payment before your statement closing date, or make smaller payments throughout the month, so the reported balance is low.

How to lower your utilization

If your ratio is hurting your score, you have several levers:

1. Pay before the statement closes. Knock the balance down a few days before your closing date so the reported figure is lower.
2. Spread spending across cards. A balance split over two cards reports lower per-card utilization than the same total piled on one.
3. Ask for a higher limit. Raising your limit while keeping spending flat lowers the ratio mathematically. Be aware a limit increase request can cause a hard inquiry, and FCAC notes that applying for credit can temporarily affect your score.
4. Keep old cards open. Closing a card removes its limit from your total available credit, which can push your overall utilization up. FCAC advises being cautious about closing accounts for this reason.
5. Pay down the balance itself. The most durable fix. A low-interest card or no-fee card can make the payoff cheaper while you work the balance down.

Common myths

• Carrying a balance builds credit. It does not. It only costs interest. Pay in full and keep utilization low.
• One late report ruins you forever. Utilization has no memory. Once a lower balance is reported, the prior high ratio stops weighing on your score.
• Closing unused cards helps. Usually the opposite, because it shrinks your total available credit and raises your ratio.

The bottom line

Keep the balance the bureau sees well under 30 percent of your limit, pay (or pre-pay) before the statement closes, and avoid closing old cards. Because utilization has no memory, a single good month of reporting can lift a score that high balances were dragging down. To compare cards by limit, fees, and rate, browse all cards or put two side by side.