The 18 month jumbo IRA CD rate at Luana Savings Bank has a new higher rate. The new 18 month jumbo IRA rate is 1.10 percent. The old 18 month jumbo IRA rate was 1.05 percent. View a history of rate changes to this 18 month jumbo IRA certificate of deposit at Luana Savings Bank 18 Month Jumbo IRA CD Rate. (continued below)