FDIC-Insured - Backed by the full faith and credit of the U.S. Government

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This bank is insured by the Federal Deposit Insurance Corporation. The FDIC Certificate ID is 90282. Click on the Certificate ID # to confirm this bank's FDIC coverage using the FDIC's BankFind tool.

EDIE
EDIE lets consumers and bankers know, on a per-bank basis, how the insurance rules and limits apply to a depositor's accounts-what's insured and what portion (if any) exceeds coverage limits at that bank. Check your deposit insurance coverage >>

Routing Number: 211371735

Depositors Insurance Fund

Established by the Massachusetts legislature in 1934, the Depositors Insurance Fund (DIF) is a private, industry-sponsored insurance fund that insures all deposit accounts above Federal Deposit Insurance Corporation (FDIC) limits at its member banks.

The unique combined insurance coverage afforded by the FDIC and the DIF ensures deposit balances are fully protected.

Since the DIF was established, no depositor has ever lost a penny in any Massachusetts savings or cooperative bank.

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An Update to Our Branch Hours, Friday, June 12th

All branches, offices, and our customer information center will close at noon on Friday, June 12th for a company-wide employee event. Online, mobile, and telephone banking, as well as all ATMs, are available 24/7. We apologize for the inconvenience.

The Cornerstone Bank Scholarship

Applications are closed for 2026. Please check back next year.

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