Simple definition
An introductory APR is a temporary promotional interest rate, often zero percent, that a card offers for a limited time after you open it or transfer a balance. When the promo period ends, the rate jumps to the card's regular APR. Think of it like a sale price that expires: great while it lasts, full price after.
Why it matters
An introductory APR can save real money if you pay off the balance before it ends, but the rate jumps to the regular APR afterward, and any remaining balance then starts accruing interest. Watch especially for deferred-interest deals, where unpaid interest can be charged retroactively if you miss the deadline.
Real-life example
Suppose a card offers a promotional zero-percent rate for a set number of months. If you clear the balance before the promo ends, you pay no interest. Leave part of it unpaid, and the regular APR applies to what remains from that point on.
Common mistakes
- Forgetting the exact date the introductory APR ends and the regular rate begins.
- Assuming the promo rate is permanent rather than temporary.
- Overlooking a deferred-interest trap that can charge back interest retroactively.
- Making new purchases that may not qualify for the introductory rate.
Pro tips
- Mark the end date of the promo period and plan to pay it off before then.
- Read whether the offer is true zero interest or deferred interest with a catch.
- Confirm the regular APR that will apply once the introductory rate expires.
- Check whether new purchases get the promo rate or the standard rate.
Related Money Dictionary terms
- Balance TransferMoving debt from one credit card to another, often to take advantage of a lower promotional interest rate.
- Purchase APRThe interest rate applied to everyday purchases on a credit card when you carry a balance past the grace period.
- Credit CardA card that lets you borrow from a lender for purchases up to a limit, requiring repayment and charging interest on unpaid balances.
- APR (Annual Percentage Rate)The yearly cost of borrowing money on a loan or credit card, stated as a percentage that includes interest and certain fees.
- Deferred InterestA promotional offer where interest is waived only if you pay the full balance by the deadline, then charged retroactively if you don't.
Frequently asked questions
What happens when my introductory APR ends?
When the promotional period ends, the introductory rate expires and your card's regular APR takes over. Any balance you still carry begins accruing interest at that standard rate from then on. To avoid a jump in cost, aim to pay the balance off before the introductory period ends, and know your exact end date.
What is a deferred-interest trap?
With deferred interest, interest quietly builds during the promo period but is only charged if you fail to pay the full balance by the deadline. Miss it, and you can be billed all that accumulated interest at once, retroactively. True zero-percent offers do not do this, so read the fine print to tell them apart.
Does the introductory APR apply to new purchases too?
It depends on the offer. Some introductory rates cover new purchases, some cover only balance transfers, and some cover both. The terms also spell out how payments are applied across balances at different rates. Read the offer details carefully so you know which balances get the promo rate and which do not.
Knowing what Introductory APR means is knowledge — the first half. A brick gets placed when you act on it: mark the end date of any introductory APR offer and set a plan to pay off the balance before it expires.
Also builds: Consumer Decisions & Big Purchases
Sources & references
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Plain-English education — not personalized legal, tax, or investment advice.