Overdrafts
An overdraft occurs when withdrawals from a bank account exceed the available balance. This gives the account a negative balance and in effect means the account provider is providing credit. If there is a prior agreement with the account provider for an overdraft facility, and the amount overdrawn is within this authorised overdraft, then interest is normally charged at the agreed rate. If the balance exceeds the agreed facility then fees may be charged and a higher interest rate might apply.
Read more about this topic: Transactional Account