ACH vs. Credit Card Transaction Liability. The consumer's financial institution must disclose to the consumer in writing the terms and conditions of electronic funds transfer services. Consumer liability turns on the promptness of the consumer's notification of his or her financial institution. The consumer bears full liability for ACH losses occurring more than 60 days after bank statement transmission but before the consumer notifies the bank. He is also liable for such post-notification losses if the bank can show that the unauthorized transactions would not have occurred if the consumer had notified the bank within 60 days. How does this arrangement compare to the U.C.C. Article 4 provisions for stopping check payment?