For banks at the center of the recent foreign exchange investigation, paying the $3.4 billion in fines might be the easy part.

The aftermath, filled with more intense regulations and scrutiny as well as prospects of layoffs and continuing probes into their activity, make for an even murkier future, according to those familiar with the investigation and the ensuing fallout among the misbehaving institutions.

Funding to existing businesses may become more difficult due to more fines and regulations.  Banks are still suffering from the great recession and now they are taking on more pressure.