Typically, a bank will bounce a cheque because a customer does not have enough money in their account to pay it. Alternatively, the customer may have used all of their overdraft facility. When a bank spots a fraudulent cheque it will be bounced. Some other reasons that banks bounce cheques could include: the cheques have not been signed correctly (e.g. one signature when two are required) or perhaps not signed at all; because they are out of date or post-dated; or because the amount in words differs from the amount in writing. If a cheque that you have paid in bounces, your bank might take the funds out of your account - you should be aware that this might be after you've withdrawn the funds (but it will be before the end of working day six after the cheque has been paid in).