As of today stores can legally charge you up to four percent more for using your credit card.
Retailers have always had to pay a fee to let you swipe but following a settlement with credit card companies stores can now pass the fee on to you.
Credit.com Chairman Adam Levin said, "This would probably be a greater impact to local merchants."
Some big retailers like Walmart have already announced they won't be passing on the surcharge to customers.
If a store is passing on the fees a sign must be posted in the store.
10 states, including California have already barred retailers from charging the fee.