On Saturday, July 26, 2025, our Quincy Center branch will be closed due to a scheduled power outage in the building. Our closest branch is at 147 West 4th Street in South Boston. You can also do your banking at 90,000+ ATMs that are part of the SUM, Allpoint, and Moneypass networks. Additionally, you may bank online, on our mobile app, or at a shared credit union branch near you.

REAL BANKING for REAL PEOPLE

Easy Banking

Enjoy unlimited transactions with your checking account—available 24/7 nationwide.

Explore Banking

Easy Mortgages

Make buying and refinancing a breeze with affordable rates.

Explore Mortgages

Easy Loans

You supply the dreams,
we’ll supply the capital.

Explore Loans

Mass Bay Credit Union A Greater Boston Credit Union Since 1936.

Mass Bay Credit Union is a full service financial institution that works to serve you. You get a say in our leadership, and we reinvest our profits back into better services and our community.

MassBay Benefits

Lower Fees

Keep more money in your pocket so you can put it towards the things that really matter to you.

learn more

Competitive Rates

Earn more interest and pay loans off faster with competitive rates that tackle the big banks.

learn more

Personal Service

Speak to real people who take the time to understand your goals and help make them happen.

learn more

News & Events

Mass Bay Credit Union Charitable Foundation Golf Tournament 2025

Please join us for the 10th Mass Bay Credit Union Charitable Foundation Golf Tournament at the Cape Club of Sharon in Sharon, on Tuesday, August 5, 2025.

2025 Scholarship Program

Mass Bay Credit Union Charitable Foundation is offering four $1,000 scholarships to high school seniors enrolling in an undergraduate college program!