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Member FDIC FDIC-Insured - Backed by the full faith and credit of the U.S. Government
Relationship High Yield Money Market Account
Personal Accounts & Individual Retirement Accounts Only
The following disclosure serves as an addendum to the Understanding Your Deposit Account for Personal Accounts Handbook for this account. Please refer to the Handbook and Personal Account Fee Schedule for more information.
Effective October 1, 2025
Minimum Balance to Earn APYInterest RateAnnual Percentage Yield (APY)
$10 - $9,999.991.24%1.25%
$10,000 - $49,999.991.48%1.50%
$50,000 - $249,999.992.22%2.25%
$250,000 - $999,999.992.71%2.75%
≥ $1,000,0002.95%3.00%
 
Bonus Rate for Customers with Performance Plus Checking Account
Minimum Balance to Earn APYInterest RateAnnual Percentage Yield (APY)
$10 - $9,999.991.48%1.50%
$10,000 - $49,999.991.73%1.75%
$50,000 - $249,999.992.46%2.50%
$250,000 - $999,999.992.95%3.00%
≥ $1,000,0003.19%3.25%


Rate Information – Your interest rate and annual percentage yield may change. Fees may reduce earnings.

Minimum balance to avoid the imposition of fees – Except for Individual Retirement Account Plans, a monthly maintenance service charge of $10 will be imposed every statement cycle if the average monthly balance drops below $1,000. The average monthly balance is calculated by adding the balance in the account for each day of the period and dividing that figure by the number of days in the period.  

There is an annual fee for Retirement accounts. A fee will be charged for each Trustee Transfer to another financial institution for all Retirement accounts. See separate Personal Account Fee Schedule for a complete list of fees and charges.

Foreign (non-CSB) ATM Surcharge Refunds – Receive up to $12 in ATM surcharge (other banks’ fees) refunds each month on this account.

Limitations –

  • You must deposit at least $1 ($100 for Retirement accounts) to open this account
  • You must live or work in Massachusetts 

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