Update: The rates have changed. Please check the credit union's website for the latest rates.
RTN Federal Credit Union is offering a 5.30% APY 12-month certificate. The minimum deposit is $10,000. There's also a special 5.05% APY 7-month CD with a minimum of $1,000.
In addition to select employee groups, you can also qualify for membership in this credit union by joining either the Gore Place Society or the Waltham Historical Society. Individual membership for the Gore Place Society is $30. Please refer to the credit union membership page for more details. Credit union membership requires a minimum deposit of $25 into the main share savings account.
Branches are located in the Massachusetts cities of Waltham, Amesbury, Peabody, Lawrence, Marlborough and Tewksbury. The credit union is federally insured by the NCUA (Charter # 24311). It has $542.7 million in assets and 42,861 members.