A Premium Line of Credit (PLOC) is a flexible loan that you can access at your convenience. If you overdraw on your account, your PLOC will cover the cost of checks, ACH and Debit Card transactions. If you have a PLOC and you are short on funds, your purchase will not be denied or you will not be charged an overdraft fee. Whenever you need some extra cash in your checking account, you can easily transfer funds from your PLOC.