Charter Oak Credit Union


The year was 1939, and in a shipyard in Groton 10 men gathered to chip in $25 each to create a lending institution to help their fellow workers. They put their hard-earned cash inside a shoebox, and they weren’t sure if they'd ever see that $25 investment again.

But they took that bold first step, and they called their proud new lending institution the Groton Shipbuilders Federal Credit Union – as a fitting tribute to their shipyard workers.

They may have begun with a small investment, but their dreams were big, and their vision even bigger.

Today, that $250 packed inside a shoebox has become a $1 billion-plus financial institution called Charter Oak Federal Credit Union – we’re eastern Connecticut's largest credit union and a leading financial institution in Connecticut. We offer full financial services – banking, investments, insurance and more – with a network of convenient branches located throughout eastern Connecticut.

We’re also a not-for-profit financial cooperative where each and every member can say he or she is also an owner. We return our earnings to our members through lower rates and fees on loans and higher yields on our deposits.

HSA Program Features

FDIC or NCUA Insured:

HSA Interest Rates

Interest rates for various balance tiers
$0.00+ 1.50% APY
Last checked on: 05-30-2023. Rates may not be current, please check the provider's website for the latest rates.


Monthly Maintenance Fee $0.00
Account Opening Fee Unknown
Account Closing Fee Unknown

HSA Investment Options

Mutual Fund Platform: close   Self-Directed Brokerage: close   CDs: close   Other: close

Contact Information

General Information


Customer Service

Mailing Address Charter Oak Federal Credit Union
1055 Hartford Turnpike
Waterford, CT 06385
Phone Number 800-962-3237
Email Address [email protected]