A transfer made by the ACH (Automated Clearing House) system in the US looks like a wire but it is different. There is a time period, I believe it is midnight of the day of sending, where it can be cancelled. One of the scams is for someone to agree to buy a watch and then he sends the ACH payment to the seller's bank and asks him to immediately send the watch that day. Seller sends the watch, tells the buyer it is on its way, and the buyer then cancels the ACH payment. You need to know which kind of payment is deposited, if it is a true wire transfer it can't be recalled for all intents and purposes. If it is unclear or marked ACH call your bank and find out what kind of deposit it is, there may be a time period when it is not totally cleared. Fortunately most people don't even know about the ACH system so they go to the bank and sends a true wire payment, so the receiver is good, the money is his.