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All GSB locations are closed today, Monday, January 17 in observance of Martin Luther King, Jr. Day. Normal business hours will resume on Tuesday, January 18.


Every Maine Business

Deserves A
Local Bank

Starting With Yours

Your business deserves 150+ years of local know-how, round-the-clock hustle, and a bank that makes it own decisions. Right here, in Maine. Your business deserves a bank that believes.

Banking is Believing Logo

At GSB banking is about more than a bottom line. It’s an opportunity to do good for our customers, and in the communities we serve. We seize that opportunity every day, with every customer. It’s what we’ve been doing for more than 150 years. Bank with us and see—banking is believing.

  • Personal
  • Business
Champion Checking

Champion Checking rewards you when your balance is up. Get unlimited transactions and a fantastic rate.

Home Equity Line of Credit (HELOC)

Maximize the equity in your home with a convenient, flexible HELOC. We offer great rates and—did we mention?—tons of flexibility.

Merchant Services

To us, great merchant services should include low rates, local support and solid technology, like Clover. Are you sure you’re getting the best rates from your card processor? Call us today for a free statement review.

Cash Management

From online banking and remote deposit to sweep accounts and positive pay, our cash management tools help you keep all the parts of your business moving.

Photo of Rosemont Market owners

The nature of our business is to support local… We always wanted to keep it local, to keep everything simple, so GSB was perfect for us. They’re always available and easy to get to. And our lender, Julie, is like my sister now. She knows so much about us… I mean, why would we ever go anywhere else?

John Naylor, Rosemont Market & Bakery

Switching Is Easy

In the past, switching banks was a pain. But now, ClickSWITCH makes it super easy.

Becky and Kim