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Branch lobbies are open by appointment only.  Make an appointment online with our new scheduling tool.


A Virtual Event with Real Funding

LaunchPad Is Back

$50,000 Could Be Yours

Don’t miss your opportunity to win $50,000 or the Emerging Business Award in Maine’s premier small business competition.











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.

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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.

Dr. Carr and Kim Donnelly

This is a family business. We have a lot of pride in what we do. GSB makes me feel like they understand that. And they value it, too. When I got my first loan from GSB, they worked incredibly hard to get me the terms I wanted. Now, years later, they still drop in just to see how I’m doing. I know they believe in my business, and that makes me feel good.

Dr. Jeffrey Carr, DVM, North Windham Veterinary Hospital

Switching Is Easy

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

Becky and Kim