Update 11/28/08: The credit union's rate table now lists these rates as available only as IRA certificates.
Members Plus Credit Union is offering attractive rates on two of its certificates: 4.60% APY 12-month and 4.34% APY 9-month. The minimum deposit is $500. These are also available as IRA certificates. The rate table has an 11/01/08 date. So I would think these rates should last for a while.
Membership is open to anyone who lives, works, or belongs to a religious or social organization located within Middlesex, Norfolk, Plymouth, or Suffolk county. Please refer to the credit union's Membership Page for the full details. Membership requires a minimum balance of $25 in the share savings account.
Branches are located in the Massachusetts cities of Dorchester, Medford, Plymouth and Westwood. The credit union is federally insured by the NCUA (Charter # 66706).