What is the rule on Escheatment in IL if a business had attempted to refund a past client via ACH payment and the refund was returned? This is a client for which we had a bank account on file to collect fees from in the past. There is a refund due to the client due to little usage. After contacting the client, it has been discovered that their contact info has been disconnected. In some instances, the business is no longer active. How long do we have before turning the funds over tot he state, if we have to. I read that if the State owes money to the taxpayer and a check us left uncashed, those funds sre escheated.