Central Checking $100 opens this account. FREE Anytime Check Card. With Central Checking, you may write as many checks as you wish. No monthly service fee, if $500 or more daily minimum is maintained. $6.00 monthly service fee, if balance falls below $500 any day of the month. Funds insured by the FDIC up to $100,000. Click here for Checking Account Pre-Application. Back to general Checking page Stop in today at the Central National Bank, Oklahoma location nearest you.