Looney Tunes Savings This type of account is available to children 0-13 years of age with a social security number. It works just like our Regular Savings Accounts except with a few perks listed below. Encourage your child to see the wonders of saving with Employees Credit Union and Kaufman County Credit Union a branch of ECU! Minimum opening balance is $5.00 ($25.00 balance must be achieved within 3 months) No membership fee No monthly service charge Surprises given on FIRST deposit Personalized ID card Personalized birthday card sent on child's birthday Balance needed to earn interest is $500.00 No card access on this account