Think your credit card rate is high? Some in Brazil pay 455 percent.
In the United States, charging an APR of 455 percent on a consumer credit card is virtually unheard of — and in some cases, would be illegal, said David Silberman, a senior fellow at the nonprofit Center for Responsible Lending. Twenty states plus D.C. set limits on the interest rates that payday lenders may charge; the highest of these is...