(7)Some Member States have issued or are preparing legislation to regulate directly or indirectly interchange fees and covering a number of issues, including caps on interchange fees at various levels, merchant fees, the ‘Honour All Cards’ rule and steering measures. The existing administrative decisions in some Member States vary significantly. To make the levels of interchange fees more consistent, a further introduction of regulatory measures at national level aimed at addressing the levels of, or discrepancies between, those fees is anticipated. Such national measures would be likely to lead to significant barriers to the completion of the internal market in the area of card-based payments and internet and mobile payments based on cards and would therefore hinder the freedom to provide services.