Glossary term
Teaser Rate
A teaser rate is a low introductory interest rate that applies for a limited period before a loan or credit product resets to a higher or variable rate.
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What Is a Teaser Rate?
A teaser rate is a low introductory interest rate offered for a limited period on a loan, mortgage, credit card, or other credit product. After the introductory period ends, the rate resets according to the contract and may become much higher.
The teaser rate can make the initial payment look affordable, but it is not the long-term cost of the debt. The borrower needs to understand the reset date, future rate formula, payment cap, fees, and whether the payment could rise sharply.
Key Takeaways
- A teaser rate is temporary and usually expires after a stated introductory period.
- The later rate may be variable, indexed, margin-based, or tied to promotional terms.
- Low initial payments can hide future payment shock if the borrower focuses only on the opening rate.
- Teaser rates are common in some credit cards, adjustable-rate mortgages, and promotional financing offers.
How the Rate Resets
The contract determines what happens after the teaser period. A credit card may move from a 0% promotional APR to the regular purchase APR. An adjustable-rate mortgage may move from a discounted initial rate to an indexed rate plus a margin. A promotional financing offer may charge deferred interest if the balance is not paid by the deadline.
The reset matters because the monthly payment can change even when the borrowed amount does not. The same principal balance can become more expensive to carry once the full rate applies.
Where Teaser Rates Appear
Product | Common Risk to Check |
|---|---|
Credit card promotion | Regular APR, balance-transfer fees, and deferred-interest terms. |
Adjustable-rate mortgage | Index, margin, first reset date, rate caps, and payment caps. |
Retail financing | Whether unpaid balances trigger deferred interest. |
Introductory personal loan offer | Fees and the rate after the promotional period. |
Payment-Shock Risk
A teaser rate can be useful when the borrower has a clear payoff or refinance plan, but it can be risky when affordability depends on the introductory rate lasting. A payment that fits at the teaser rate may strain cash flow after reset.
Borrowers should compare the introductory payment with the fully adjusted payment. That is the cleaner test of affordability than looking at the first few months alone.
The Bottom Line
A teaser rate lowers the initial cost of borrowing but does not define the full cost of the loan. The reset terms are the part that determines whether the debt remains manageable after the promotion ends.