The phrase “no interest” can describe two deals that end very differently.
True promotional zero percent
A 0% introductory APR generally means interest does not build on that promotional balance during the promo period. When the period ends, the regular APR starts on the balance still left. Read the offer because purchases, transfers, and cash advances can have different rates and fees.
Deferred interest
Deferred-interest wording often says “no interest if paid in full” by a date. The word if matters. Interest may be building in the background. If the full promotional balance is not paid by the deadline, that accrued interest can be added back to the purchase date.
Pal question: “Is this 0% interest, or is interest accruing and only waived if I pay every dollar by the deadline?”
The minimum payment may not do the job
Card minimums are usually not built to clear a promotional purchase by the promo end. Divide the promotional balance by the number of months, then round up and leave a cushion. Set the payoff target one statement early.
Other purchases can muddy the bucket
A card can hold balances with different rates. Payment-allocation rules matter, especially on a deferred-interest purchase. Ask the issuer how extra payments are applied and check each statement. The last two billing cycles can use special allocation rules under federal law.
Write down five facts before buying
- Exact promotional balance.
- Exact end date, not just “12 months.”
- Regular APR and the APR used for deferred interest.
- Transfer, annual, late, or purchase fees.
- Monthly amount needed to finish early.
Do not use the card as a moving target
If the goal is one financed purchase, new purchases make the statements harder to read and can affect the grace period. A cash advance can start interest immediately and add a fee.
Call before the final statement
Ask for the exact promotional payoff amount and date. After paying, check that the next statement shows no leftover promo balance or surprise deferred interest.
A promotion is still debt. Missing the payment can mean a late fee, credit-report damage, or loss of special terms even when the ad said “no interest.”
Where we checked
Go straight to the source
- CFPB deferred-interest explainerOfficial payoff, late-payment, minimum, and allocation rules.
- CFPB promotional financing guidePlain comparison of 0% and deferred-interest offers.
- CFPB credit cards hubCurrent card-rate, grace-period, dispute, and complaint resources.
We link to the official office when one exists. A link is not an endorsement, and we do not control outside sites.
