How a Balance Transfer Credit Card Promotion Works in Canada

A balance transfer card moves existing debt onto a new card at a low promotional rate.

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

What a balance transfer actually does

A balance transfer moves a debt from one credit account to another. The card you are moving the balance to pays off the old account, and you now owe the new issuer instead. The debt itself does not shrink — only the terms attached to it change. A promotional rate can make the debt cheaper to carry for a while, but it does not make it disappear.

The mechanics of moving a balance

You ask the new issuer to transfer a specific amount, and you give them the account details of the card you want cleared. The issuer sends the funds, usually either directly to the other lender or as a cheque or account credit. Until the old account is genuinely paid, you still owe it and interest keeps accruing there, so keep making payments on the old card until the transfer posts.

It is usually worth keeping the old account open once it is cleared. Closing a long-held account can shorten the average age of your credit history and reduce your total available credit, both of which can change how your file looks to future lenders.

Why issuers offer promotional rates

A promotional rate is a customer acquisition tool. The issuer expects that a share of borrowers will still be carrying a balance when the promotion expires and will then pay the standard rate, or will use the new card for everyday purchases that never benefit from the promotion. Knowing that incentive is useful: it shows you exactly where the offer stops being generous.

How the promotional rate works

The transfer fee

Most promotional offers charge a transfer fee, expressed as a percentage of the amount moved, often with a minimum charge. The fee is usually added to the balance on the new card rather than billed separately, so it starts earning interest alongside everything else. Compare the fee with the interest you expect to avoid on the old card across the promotional window. If the fee is large and your repayment pace is slow, the offer can cost more than leaving the debt where it was.

The promotional window

The promotional rate applies for a fixed period set by the issuer. The clock normally starts when the transfer is processed, not when you apply, and processing can take days or weeks. That makes the real payoff window shorter than the headline period. Treat the final stretch of the promotion as if it does not exist, and plan to be finished before then.

What purchases do during a promotion

Promotional rates generally apply only to the transferred amount. New purchases often attract the standard rate from the day they post, and because payments are usually applied to the lowest-rate balance first, a purchase balance can sit untouched and accumulate interest while your payments grind down the cheap transferred balance. The simplest defence is to stop using the transferred card for new spending.

What happens when the promotional rate ends

When the promotional period expires, whatever is left of the transferred balance moves to the standard rate set out in your cardholder agreement. Nothing else resets automatically: the transfer fee is not refunded, the balance is not reduced, and the change may appear only as a different line on your statement.

Two effects matter most. Interest that was paused starts accruing again on the full remaining balance, and a minimum payment that once made real progress may now barely cover the interest charge. If you have been paying only the minimum, the balance can begin growing again within a single statement cycle.

Costs to compare before you transfer

• The transfer fee, including any minimum charge and how it is billed.
• The standard rate that applies once the promotion ends.
• The true length of the promotional window after processing time is subtracted.
• How your payments will be allocated between the transferred balance and any purchase balance.
• Whether new purchases receive the promotional rate or the standard rate.
• Any annual fee attached to the card.
• What the old card is doing while the transfer is in transit.

Building an exit plan before the promotion ends

1. Divide the transferred balance by the number of payment cycles you genuinely have before the promotion ends, then add a margin.
2. Set up an automatic payment for that amount so the plan does not depend on memory.
3. Stop using the card for new purchases, and keep the cleared account open with a low or zero balance.
4. Write the promotional end date somewhere you will see it, and check the balance against the plan each month.
5. Decide in advance what you will do with any balance that remains — a consolidation loan, a line of credit or a structured repayment plan are all worth comparing before the deadline, not after it.

The Criminal Code sets the criminal rate of interest at 35% APR. It is a legal ceiling, not a shopping benchmark: a product can be perfectly lawful and still be an expensive way to borrow.

When a balance transfer is the wrong tool

A balance transfer works best when the debt is finite, the promotional window is long enough, and you can commit to a payment that clears it. It works badly in a few familiar situations:

• The balance is too large to clear inside the promotional window, so the transfer only postpones the problem and adds a fee.
• New spending continues on the same card, so the cheap balance and the expensive balance grow side by side.
• The cause of the debt — an income gap, a one-off expense, a spending pattern — has not changed.

In those cases, a consolidation loan, a line of credit or a non-profit credit counselling centre may be a better comparison point. The useful question is not which product carries the lowest short-term rate, but which structure actually retires the debt.

Your credit file and your personal information

Applying for a new credit card usually results in a hard inquiry on your credit report, which may affect your credit score; checking your own report is a soft inquiry and does not. Equifax Canada and TransUnion Canada are the two national credit bureaus, and both hold the payment history a future lender will review. Under PIPEDA, organisations handling personal information in Canada must follow rules about consent, use and retention, so you are entitled to ask how your information will be used.

Putting it together

A balance transfer is a tool with an expiry date. Read the fee, read the standard rate, subtract processing time from the promotional window, and decide whether you can clear the balance before the clock runs out. If the answer is yes, it can be one of the cheapest ways to deal with expensive card debt. If the answer is no, the same offer becomes an instalment plan with a fee attached.