English to Italian Bus/Financial Finance (general)

Asset-backed credit card securities have two main periods after issue – a revolving and an amortization
period [7]. The first period assumes that investors temporarily receive only interest until the revolving period ends.
It is believed that such costs allow to make purchases of new receivables, as well as resolve issues with short-term
credit card loans. The second period means that here the principal amount that is received serves as a means
of payment to investors, but not immediately, but within a certain period and in equal amounts, with their
reasonable control
https://elib.psu.by/bitstream/123456789/29685/1/115-117.pdf

grazie