Retailer ALDI has agreed to improve signage in its stores informing customers about credit card surcharges, following a finding by the Australian Securities and Investments Commission that the retailer did not have consistent disclosure in all its stores.ASIC also found that ALDI did not disclose that it applied a surcharge to contactless payments, whether made with a debit or credit card.The surcharge is 0.5 per cent of the purchase price.Under the ASIC Act, a failure to adequately disclose surcharges, or creating an impression that surcharges do not apply, may be misleading or deceptive.For credit card payments where a PIN or signature was used, in some stores disclosure of the surcharge was on the payment terminal screen. ASIC said this was too late. ASIC said merchants needed to be "transparent about fees and charges".