National Futures Association (NFA) has proposed an Interpretive Notice that would prohibit NFA members from allowing customers to fund their retail forex or futures trading accounts with credit cards. NFA believes that the easy access to borrowed funds provided by credit cards make them an inappropriate funding tool for futures contracts and retail forex products. The proposed Interpretive Notice makes clear that NFA is not prohibiting electronic funding mechanisms that are tied to existing funds in a customer’s bank account, such as payments made through a debit card or an electronic funds transfer. To accept electronic funding methods, NFA members must be able to distinguish credit cards from permissible electronic funding sources and reject credit cards as a source of funds. 

More information is available here.