The company plans to extend the concept to automobile loans and home mortgages later in the year.
The Fed said automobile loans fell by $267 million during the month, after a $1.09 billion rise in May - evidence of sluggish auto sales.
The rules were loosened so that savings banks could offer automobile loans, credit cards, and actual checking accounts.
The slower growth in November came mainly in the automobile loan and credit card categories.
In December, automobile loans rose by $2.52 billion, following a much smaller $424 million increase in November.
But the study was worrisome to companies that specialize in money market funds, automobile loans and consumer finance.
In August, automobile loans climbed by $2.91 billion, more than triple the $850 million rise in July.
The automobile loans he makes, he advertises over the radio.
Without incentives, automobile loans fell by four-tenths of 1 percent in December.
Personal interest like that on credit cards or automobile loans is no longer deductible.