From January 13, both online and offline shops have been banned from charging anyone an extra payment for debit or credit card payments, as opposed to cash.
The new rule follows an EU directive and will prevent any card surcharging for paying by debit or credit cards, PayPal and ApplePay in the UK.
Companies are no longer allowed to charge shoppers up to 20% more for purchases just for paying with plastic.
A survey conducted for Consumer Intelligence by Viewsbank, revealed that shoppers are still being charged extra fees for using credit and debit cards since the introduction of new EU laws.
The research found that 14% of shoppers had been charged an additional fee for using a credit card to pay online or in stores.
The survey also revealed that shoppers are being hit with a range of alternative fees under different names, with 21% reported being charged a booking fee for using a credit card since the new rules came into effect.
Meanwhile, 13% had been asked to pay a transaction fee in the past month, and 13% had been asked to pay an administration charge.
Around 60% of those questioned said they had not been charged.
Have you been charged a credit card fee since the change in law? Tell us about it in the comments section.