The credit-card minimum-payment trap, and the math that frees you
The little "minimum payment" box on your statement is one of the most expensive numbers in Canadian personal finance. It looks like a helpful floor. It is actually a leash, engineered to keep you paying interest for decades while your balance barely moves.
What the minimum payment really is
Most Canadian credit cards set the minimum at the greater of about 3% of your balance or a flat floor like $10 (some issuers phrase it as interest plus fees plus 1%). The catch is built into the percentage: as your balance shrinks, so does the 3%, so the dollar amount you pay keeps falling. You are always chasing a moving target that drifts toward zero without ever arriving.
At a typical card rate of 19.99%, almost your entire early payment goes to interest, not the balance. That is the design, not an accident.
The trap, in real numbers
Take a $5,000 balance at 19.99% — an ordinary Canadian card. Here is what "just the minimum" actually costs versus paying a fixed amount each month.
| How you pay | Time to clear | Interest paid | Total paid |
|---|---|---|---|
| Only the 3% minimum | ~20 years | ~$5,800 | ~$10,800 |
| Fixed $250 / month | ~2.1 years | ~$1,100 | ~$6,100 |
Read that first row again: paying only the minimum, you spend more in interest than the original $5,000, and you carry the debt for two decades. (On a $6,000 balance the same approach runs past 21 years.) And unlike a mortgage or an investment loan, personal credit-card interest is not tax-deductible in Canada — there is no silver lining at tax time.
The one switch that frees you
The fix is almost insultingly simple: stop paying the minimum, and pay a fixed dollar amount instead. Because your payment no longer shrinks with the balance, every extra dollar attacks the principal.
On that same $5,000 at 19.99%, committing to a flat $250 a month clears it in about two years and saves you roughly $4,600 in interest versus the minimum. Even $150 a month changes the picture completely. If you have more than one card, throw the extra at the highest-rate card first (the avalanche method) while paying minimums on the rest — that costs you the least interest overall.
Three quick wins this week
- Call and ask for a lower rate. It works more often than people expect, especially with a clean payment history. A lower APR sends more of every payment to principal.
- Consider a balance transfer — carefully. A low or 0% promo can buy breathing room, but read the transfer fee (often 1–3%) and the rate it snaps back to when the promo ends.
- Freeze new spending on the card while you pay it down. You cannot bail out a boat while the tap is still running.
Looni's credit-card optimizer reads your real balances and rates, then shows you exactly how much to pay and where, to clear the debt for the least interest. Join early access.