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Annual Percentage Rate
The APR is a measure of the cost of credit, expressed as a yearly rate.
The card issuer also must disclose the "periodic rate" - the rate
applied to your outstanding balance to figure the finance charge for each
billing period.
Some credit card plans allow the issuer to change your APR when interest rates
or other economic indicators - called indexes - change. Because the rate change
is linked to the index's performance, these plans are called "variable
rate" programs. Rate changes raise or lower the finance charge on your
account. If you're considering a variable rate card, the issuer must also
provide various information that discloses to you:
- that the rate may change;
and
- how the rate is determined
- which index is used and what additional amount, the "margin," is
added to determine your new rate.
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