Credit cards can be completely free to use — or one of the most expensive forms of debt you will ever carry. The difference comes down to understanding how interest is charged. This guide explains grace periods, interest rates, and minimum payments in plain language.
The Interest Rate on Your Card
Every credit card has an annual interest rate for purchases. In Canada, standard cards commonly charge around 20% or more, while low-rate cards may be closer to 10–13%. Most cards also have a separate, often higher rate for cash advances and balance transfers (unless a promotion applies).
Although the rate is stated annually, interest is usually calculated daily on your balance and charged monthly.
How the Grace Period Works
The grace period is the time between the end of your statement period and your payment due date. In Canada, federally regulated card issuers must give you at least 21 days interest-free on new purchases — but only if you paid your previous statement balance in full.
If you pay in full by the due date every month, you never pay purchase interest. That is the single most important credit card habit.
What Happens If You Carry a Balance
If you do not pay the full statement balance, you typically lose the grace period. Interest is then charged on the unpaid balance, and new purchases may begin accumulating interest right away until the balance is paid in full again.
Cash Advances: No Grace Period
Withdrawing cash from your credit card, or using card “cheques,” usually counts as a cash advance. Interest starts the day you take the money, and there is often a flat fee on top. Avoid cash advances except in true emergencies.
The Minimum Payment Trap
Your statement shows a minimum payment — often a small percentage of the balance or a set dollar amount, whichever is greater. Paying only the minimum keeps your account in good standing, but most of that payment may go to interest rather than reducing what you owe.
Example: With a $3,000 balance at about 20% and payments of only the minimum, it can take many years to pay off and cost thousands in interest. Canadian statements are required to show an estimate of how long it would take to pay off your balance by making only minimum payments — check yours.
How Payments Are Applied
When you pay more than the minimum, issuers in Canada must generally apply the extra amount either to the balance with the highest interest rate first, or proportionally across balances. Paying more than the minimum always helps.
Practical Ways to Pay Less Interest
- Pay the full balance every month whenever possible.
- Pay more than the minimum if you cannot pay in full.
- Make payments early or more than once a month to reduce the average daily balance.
- Consider a low-interest card if you regularly carry a balance.
- Use a balance transfer offer carefully, with a plan to pay it off before the promotional rate ends.
- Set up automatic payments so you never miss a due date.
The Bottom Line
A credit card is free to use when you pay the full balance on time. Once you carry a balance, interest adds up quickly. Read your statement, understand your card’s rates, and always aim to pay more than the minimum.
This article is for general information only and is not financial advice.
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