Suppose a friend sends me $500 through Chase Quickpay, and I accept it. The money goes into my account, and is available for further sending/withdrawal. Is it possible for Chase to reverse the transfer of money so that the money goes back to the sender (if the sender requests), even after I have the transferred money already in my account? What if I withdraw/use up the money before they reverse the transaction?
From Chase FAQ it looks like this is a regular ACH transfer. ACH transactions can be reversed under certain conditions. I haven't been able to find some authoritative link on this, so I suggest this (thenest.com budgeting blog) instead:
You can have ACH transactions reversed for one of three reasons under the rules: wrong money amount, wrong account or duplicated transactions. For example, if your mortgage bill is for $756.00, but your lender's website messes up and you're charged $856.00, the transaction is reversible it because it's the wrong dollar amount. If the website charges you $756.00 twice, the second duplicated transaction is reversible.
You might have to bring a mistake to the originator's attention to get it fixed. Only the originator -- the person or company taking or sending money -- can ask for a reversal. For example, if you have a transaction for a wrong dollar amount from your lender's website, the originator is the lender. An originator is supposed to send the reversal within 24 hours of the error's discovery and within five banking days of the original transaction. When a reversal is required because of a wrong amount or wrong account, the originator must send a correcting entry with the right information.
A bank should honor an ACH reversal, even if it means debiting a customer's account again because of a correcting transaction. However, the bank doesn't have to debit your account if you closed it or the new transaction would overdraw it. Your bank does have to tell you if a correcting entry is going to take money out of your account, but the bank doesn't need your permission to do it.