“Guaranteed” means if you received a qualifying eCheck and select to use a Deposit Service, the funds cannot be taken away once they are in your bank account. If the check ends up bouncing, you don't have to worry.
Whether a traditional paper check that is sent in the mail or an eCheck, every check has the risk of being returned (i.e. bounced, NSF). One common reason for returned checks is insufficient funds in the senders' checking account. When a check is returned, the recipient does not receive the funds and now must request and receive another check from the sender to get paid. Check returns can be a real hassle and delay how quickly you can access your funds.
* Majority of Instant Funds transactions will be funded within 30 minutes, but it could take up to 24 hours. The funds availability timing for the initial transaction will generally be indicative of future transactions for the account you set up. Direct Deposit transactions will be funded in 1-3 days. Deposit to PayPal transactions will be funded within 30 minutes. A small fee will be charged to the eCheck recipient for each deposit. Check clearing provided by our partner bank.