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

BankFind
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.

open an account

Online Banking

other services

March 2026 Scam Alert

Scam alert! It has been brought to our attention that scammers are calling and texting customers from a spoofed caller ID showing as Cornerstone Bank. These scammers are identifying as Cornerstone Bank and communications are about fraudulent ACH or wire payments. Remember, Cornerstone Bank will never text confirmation links for any form of payment. If you receive this call or text, please ignore the communication and call us directly at 800-939-9103.

Translate