Credit card companies will lose billions of dollars in fees to customers after a bill expected to become law this Friday is signed, an industry analyst told the Wall Street Journal Thursday.

The law would primarily affects companies which target people with poor credit histories and companies offering cards through retailers, the report states.

Among the rule changes are limits to some interest rate increases and greater company disclosure about terms to consumers.

The industry will lose about $10 billion in revenue in interest income, according to Robert Hammer, chairman and CEO of credit card advisory firm R.K. Hammer.

The report notes that the industry is expected to fine consumers $20.5 billion in penalty fees this year.

Those portfolios that are skewed toward late-payment fees, over-limit fees and penalty repricing will be most at risk, Craig Maurer, an analyst at Calyon Securities told the Journal.