An Apex Clearing (ACH) bank reversal takes place when a transfer of funds is returned from a users bank as insufficient funds, cancelled or stopped. 

This may occur when there are insufficient funds in your bank account, there is a duplicate transaction, the transaction is denied, or when the type of account is incorrect. In the event of an ACH reversal, a $30 fee will be incurred by the user and the funds will be returned to the original account. Stash is not responsible for any ACH reversal fees incurred by the user. 

For a full list of fees, click here.