Credit card loans and overdrafts are revolving loans, also called evergreen loan. Banks who are eligible for daylight overdrafts get a net debit cap. Balances and overdrafts are modelled by numeric types. Most banks charge interest to their customers in respect of overdrafts. Funds are released by available funds on hand (no overdrafts are permitted) or through offsetting. After this the bank was able to offer overdrafts for the first time. These are temporary advances (overdrafts) extended by RBI to the govt. In July 2007, HSBC suddenly withdrew its interest-free overdrafts for graduates. After the droughts and famines hit India, states had huge overdrafts year after year. Overdrafts occur for a variety of reasons. Union and Planters' early years were plagued with overdrafts.