21 month CD rates at SelectBank are currently at 1.33 percent. SelectBank's 21 month CD rate is highest than most 24 month CD rates available today. SelectBank also offers two other certificates of deposit with odd months that have good rates. SelectBank also offers 13 month CDs and 58 month CDs. You can see all 21 month CD rate changes at SelectBank here: SelectBank 21 Month CD Rate