However, the new rules are expected to prohibit credit card companies from increasing rates at will, with some exceptions such as those that apply to people who fail to pay a bill within 30 days. So-called universal default, which permits changing card terms if the borrower defaults on another bill such as utilities or a gym membership, also is expected to be banned. And double-cycle billing, in which card companies reach back to earlier billing cycles to help calculate interest charged in the current cycle, also is expected to be eliminated.