Notice: In Observance of Martin Luther King Jr. Day, all SBSI locations will be closed Monday, Jan 19, 2026. Normal business hours will resume Tuesday, January 20, 2026.
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FDIC-Insured - Backed by the full faith and credit of the U.S. Government

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

Mutual High Yield Savings

For the hard-earned every dollar.

Earn 3.00% APY* with no large minimum balance required.

*Annual Percentage Yield

Mutual High Yield Savings

With your linked Mutual Checking, you will have access to our Mutual High Yield Savings account. This is a great option to build up your nest egg, setting aside money for future needs, big purchases, or long-term financial goals. No large starting balance required.

  • Premium interest rates
  • ATM/debit access with Checking Account as primary account1
  • Free Direct Deposit and Automatic Withdrawals
  • Free Online Banking
  • Free Mobile Banking and Mobile Check Deposit
  • Free eStatements 
  • Free Telebanker
  • Greenlight2
  • $2.00 monthly service charge (waived if $100.00 minimum balance is kept)
  • Active primary relationship on Mutual Checking or Mutual Interest Checking Account Required3
  • One Mutual High Yield Savings account allowed per primary customer
As of January 12, 2026
BalanceInterest RateAPY*
$0 - $99,999.991.98%2.00%
$100,000.00 or more**0.10%0.10%

Fees may reduce earnings on this account. Rates are subject to change after account opening. An active Mutual Checking or Mutual Interest Checking accounts is required. The Mutual High Yield Savings will be converted to an Essential Money Market if the corresponding checking account is closed. Only one (1) Mutual High Yield Savings allowed per primary customer. 
*Annual Percentage Yield.
**Annual Percentage Yield for this tier will range from 0.10% to 2.00% depending on the balance in the account.

1You may incur a charge if you use your card at a non-SBSI ATM.

2Saco & Biddeford Savings Institution customers are eligible for the Greenlight SELECT plan at no cost when they connect their Saco & Biddeford Savings Institution account as the Greenlight funding source for the entirety of the promotion. Subject to minimum balance requirements and identity verification. Upgrades will result in additional fees. Upon termination of promotion, customers will be responsible for associated monthly fees. See terms for details. Offer ends 11/14/2026. Offer subject to change and partner participation.

3An active Mutual Checking or Mutual Interest Checking account is required.  The Mutual High Yield Savings will be converted to an Essential Money Market if the corresponding checking account is closed.

Compare Accounts

Essential Money MarketMutual High Yield SavingsHigh Balance Savings
The right fit if you want…A tiered-interest savings account with no monthly fees.A savings account for long-term financial goals A savings account with tiered interest
Minimum Balance Requirementcheckedcheckedchecked
Monthly Service Chargescheckedcheckedchecked
Free ATM Withdrawals1checkedcheckedchecked
Free Online Bankingcheckedcheckedchecked
Free Mobile Bankingcheckedcheckedchecked
Mobile Check Depositcheckedcheckedchecked
Free eStatementscheckedcheckedchecked
Other BenefitsNo Monthly FeeTiered interest ratesTiered interest rates
1You may incur a charge if you use your card at a non-SBSI ATM.

Essential Money Market

Essential Money Market is our tiered-interest savings account with no monthly fees.

  • Tiered interest rates
  • ATM/debit access with Checking Account as primary account1
  • Free Direct Deposit and Automatic Withdrawals
  • Free Online Banking
  • No minimum balance
  • No monthly service fee
  • Free Mobile Banking and Mobile Check Deposit
  • Free eStatements 
  • Free Telebanker
  • Greenlight2
As of January 12, 2026
BalanceInterest RateAPY*
$0 - $24,999.990.10%0.10%
$25,000 - $49,999.990.25%0.25%
$50,000 - $99,999.990.45%0.45%
$100,000 - $249,999.990.90%0.90%
$250,000 - $499,999.991.20%1.21%
$500,000 - $749,999.991.83%1.85%
$750,000 or more2.08%2.10%

Fees may reduce earnings on this account. Rates are subject to change after account opening.
*Annual Percentage Yield.

1You may incur a charge if you use your card at a non-SBSI ATM.

2Saco & Biddeford Savings Institution customers are eligible for the Greenlight SELECT plan at no cost when they connect their Saco & Biddeford Savings Institution account as the Greenlight funding source for the entirety of the promotion. Subject to minimum balance requirements and identity verification. Upgrades will result in additional fees. Upon termination of promotion, customers will be responsible for associated monthly fees. See terms for details. Offer ends 11/14/2026. Offer subject to change and partner participation.

High Balance Savings

This is a great option for those looking to take advantage of the rates offered at a higher balance level.

  • Tiered interest rates
  • ATM/debit access with Checking Account as primary account1
  • Free Direct Deposit and Automatic Withdrawals
  • Free Online Banking
  • Free Mobile Banking and Mobile Check Deposit
  • Free eStatements 
  • Free Telebanker
  • Greenlight2
  • $2.00 monthly service charge (waived if $100.00 minimum balance is kept)
As of January 12, 2026
BalanceInterestAPY*
$0 - $999,999.990.10%0.10%
$1,000,000 - $1,499,999.992.42%2.45%
$1,500,000 - $2,999,999.992.95%2.99%
$3,000,000 - $4,999,999.993.15%3.20%
$5,000,000 - $9,999,999.993.25%3.30%
$10,000,000 or more3.25%3.30%

Fees may reduce earnings on this account. Rates are subject to change after account opening.
*Annual Percentage Yield.

1You may incur a charge if you use your card at a non-SBSI ATM.

2Saco & Biddeford Savings Institution customers are eligible for the Greenlight SELECT plan at no cost when they connect their Saco & Biddeford Savings Institution account as the Greenlight funding source for the entirety of the promotion. Subject to minimum balance requirements and identity verification. Upgrades will result in additional fees. Upon termination of promotion, customers will be responsible for associated monthly fees. See terms for details. Offer ends 11/14/2026. Offer subject to change and partner participation.

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