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Best Money Market Rates in South Portland, Maine - June 2026

Content reviewed by
Brian McKay Brian McKay
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| ✓Fact Checked | Last Updated: June 3, 2026

Current South Portland, Maine and the surrounding area money market deposit account rates include Atlantic Regional Federal Credit UnionAtlantic Regional Federal Credit Union600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292A+5.0 ★Texas Ratio: 2.79% Business Money Market at 4.00% APY, Evergreen Credit Union Portland, MEEvergreen Credit Union Portland, ME799 Broadway, South Portland, ME 04106A5.0 ★Texas Ratio: 7.69% Money Market at 3.60% APY, Town & Country Federal Credit UnionTown & Country Federal Credit Union557 Main St, South Portland, ME 04106 5408A+5.0 ★Texas Ratio: 2.96% Money Market at 3.04% APY, Coast Line Credit UnionCoast Line Credit Union333 Cottage Rd, South Portland, ME 04106 3919A+5.0 ★Texas Ratio: 1.04% Money Market at 2.45% APY, and Saco & Biddeford SavingsSaco & Biddeford Savings601 Broadway, South Portland, ME 04106A+5.0 ★Texas Ratio: 4.27% Essential Money Market at 2.10% APY. Money market rates as of June 3, 2026 according to verified data from MonitorBankRates.

South Portland has 6 local institutions in our database, with money market rates as high as 4.00% APY from Atlantic Regional Federal Credit Union at 600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292. Use the table below to compare all available offers, including options from institutions serving the broader Maine area. Rates are continually updated — we recommend checking back frequently.

Rates reflect recent market quotes and representative offers available to depositors in South Portland, Maine and surrounding area. Last Updated and Verified: June 3, 2026

Compare the Best Money Market Rates Today in South Portland, Maine & the Surrounding Area

Source: Verified Money Market Rate Data provided by MonitorBankRates
Institution
Product
APY
Min Deposit
Profile
Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market Account
4.00%
$0
View
▼
Rate3.93%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

$250,000 - $499,999

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Business Money Market
4.00%
$0
View
▼
Rate3.93%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Money Market
3.60%
$0
View
▼
Rate3.54%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
3.10%
$0
View
▼
Rate3.06%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Town & Country Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.96%
557 Main St, South Portland, ME 04106 5408
Money Market
3.04%
$0
View
▼
Rate3.00%
Min Deposit$0
Min Balance—
UpdatedMay 29, 2026
Details

$250,000 +

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
2.90%
$0
View
▼
Rate2.86%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
2.80%
$0
View
▼
Rate2.76%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
2.65%
$0
View
▼
Rate2.62%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Town & Country Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.96%
557 Main St, South Portland, ME 04106 5408
Money Market
2.53%
$0
View
▼
Rate2.50%
Min Deposit$0
Min Balance—
UpdatedMay 29, 2026
Details

$100,000 - $249,999

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Business Money Market
2.50%
$0
View
▼
Rate2.47%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market Account
2.50%
$0
View
▼
Rate2.47%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

$100,000 - $249,999

Coast Line Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 1.04%
333 Cottage Rd, South Portland, ME 04106 3919
Money Market
2.45%
$0
View
▼
Rate2.42%
Min Deposit$0
Min Balance—
UpdatedMay 23, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Business Money Market
2.30%
$0
View
▼
Rate2.28%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Town & Country Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.96%
557 Main St, South Portland, ME 04106 5408
Money Market
2.27%
$0
View
▼
Rate2.25%
Min Deposit$0
Min Balance—
UpdatedMay 29, 2026
Details

$50,000 - $99,999

Coast Line Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 1.04%
333 Cottage Rd, South Portland, ME 04106 3919
IRA Money Market
2.25%
$0
View
▼
Rate2.23%
Min Deposit$0
Min Balance—
UpdatedMay 23, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Ultimate Insured Business Money Market
2.10%
$0
View
▼
Rate2.08%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Money Market
2.10%
$0
View
▼
Rate2.08%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Saco & Biddeford Savings
Institution Rating:
A+5.0 ★ Texas Ratio: 4.27%
601 Broadway, South Portland, ME 04106
Essential Money Market
2.10%
$0
View
▼
Rate2.08%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Coast Line Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 1.04%
333 Cottage Rd, South Portland, ME 04106 3919
Money Market
2.05%
$0
View
▼
Rate2.03%
Min Deposit$0
Min Balance—
UpdatedMay 23, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
2.00%
$0
View
▼
Rate1.98%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market Account
2.00%
$0
View
▼
Rate1.98%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

$50,000 - $99,999

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Business Money Market
2.00%
$0
View
▼
Rate1.98%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Ultimate Insured Money Market
1.90%
$0
View
▼
Rate1.89%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Saco & Biddeford Savings
Institution Rating:
A+5.0 ★ Texas Ratio: 4.27%
601 Broadway, South Portland, ME 04106
Essential Money Market
1.85%
$0
View
▼
Rate1.83%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
1.85%
$0
View
▼
Rate1.83%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Coast Line Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 1.04%
333 Cottage Rd, South Portland, ME 04106 3919
IRA Money Market
1.75%
$0
View
▼
Rate1.74%
Min Deposit$0
Min Balance—
UpdatedMay 23, 2026
Details

Town & Country Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.96%
557 Main St, South Portland, ME 04106 5408
Money Market
1.51%
$0
View
▼
Rate1.50%
Min Deposit$0
Min Balance—
UpdatedMay 29, 2026
Details

$25,000 - $49,999

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Business Money Market
1.50%
$0
View
▼
Rate1.49%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Ultimate Insured Business Money Market
1.50%
$0
View
▼
Rate1.49%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Business Money Market
1.50%
$0
View
▼
Rate1.49%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market Account
1.50%
$0
View
▼
Rate1.49%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

$10,000 - $49,999

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
1.35%
$0
View
▼
Rate1.34%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Coast Line Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 1.04%
333 Cottage Rd, South Portland, ME 04106 3919
Money Market
1.35%
$0
View
▼
Rate1.34%
Min Deposit$0
Min Balance—
UpdatedMay 23, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Business Money Market
1.30%
$0
View
▼
Rate1.30%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Ultimate Insured Business Money Market
1.30%
$0
View
▼
Rate1.30%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Money Market
1.30%
$0
View
▼
Rate1.30%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Ultimate Insured Money Market
1.30%
$0
View
▼
Rate1.30%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Town & Country Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.96%
557 Main St, South Portland, ME 04106 5408
Money Market
1.26%
$0
View
▼
Rate1.25%
Min Deposit$0
Min Balance—
UpdatedMay 29, 2026
Details

$10,000 - $24,999

Saco & Biddeford Savings
Institution Rating:
A+5.0 ★ Texas Ratio: 4.27%
601 Broadway, South Portland, ME 04106
Essential Money Market
1.21%
$0
View
▼
Rate1.20%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Money Market
1.10%
$0
View
▼
Rate1.10%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Ultimate Insured Money Market
1.10%
$0
View
▼
Rate1.10%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Town & Country Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.96%
557 Main St, South Portland, ME 04106 5408
Money Market
1.01%
$0
View
▼
Rate1.00%
Min Deposit$0
Min Balance—
UpdatedMay 29, 2026
Details

$2,000 - $9,999

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Business Money Market
1.00%
$0
View
▼
Rate0.99%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
1.00%
$0
View
▼
Rate0.99%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market Account
1.00%
$0
View
▼
Rate0.99%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

$5,000 - $9,999

Coast Line Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 1.04%
333 Cottage Rd, South Portland, ME 04106 3919
Money Market
1.00%
$0
View
▼
Rate0.99%
Min Deposit$0
Min Balance—
UpdatedMay 23, 2026
Details

Saco & Biddeford Savings
Institution Rating:
A+5.0 ★ Texas Ratio: 4.27%
601 Broadway, South Portland, ME 04106
Essential Money Market
0.90%
$0
View
▼
Rate0.90%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Business Money Market
0.50%
$0
View
▼
Rate0.50%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Money Market
0.50%
$0
View
▼
Rate0.50%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
IRA Money Market
0.50%
$0
View
▼
Rate0.50%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
APEX Ultimate Insured Business Money Market
0.50%
$0
View
▼
Rate0.50%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Evergreen Credit Union Portland, ME
Institution Rating:
A5.0 ★ Texas Ratio: 7.69%
799 Broadway, South Portland, ME 04106
Ultimate Insured Money Market
0.50%
$0
View
▼
Rate0.50%
Min Deposit$0
Min Balance—
UpdatedMay 20, 2026
Details

Currently Closed to New Shares

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market Account
0.50%
$0
View
▼
Rate0.50%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

$1,000 - $4,999 (Savings)

Atlantic Regional Federal Credit Union
Institution Rating:
A+5.0 ★ Texas Ratio: 2.79%
600 Sable Oaks Dr Ste 100, South Portland, ME 04106 3292
Money Market
0.50%
$0
View
▼
Rate0.50%
Min Deposit$0
Min Balance—
UpdatedMay 22, 2026
Details

Savings

Saco & Biddeford Savings
Institution Rating:
A+5.0 ★ Texas Ratio: 4.27%
601 Broadway, South Portland, ME 04106
Essential Money Market
0.45%
$0
View
▼
Rate0.45%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
inBusinessTM Money Market Savings2
0.40%
$0
View
▼
Rate0.40%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
inBusinessTM Money Market Savings2
0.30%
$0
View
▼
Rate0.30%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Saco & Biddeford Savings
Institution Rating:
A+5.0 ★ Texas Ratio: 4.27%
601 Broadway, South Portland, ME 04106
Essential Money Market
0.25%
$0
View
▼
Rate0.25%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
Money Market Accounts
0.15%
$0
View
▼
Rate0.15%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

2

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
inBusinessTM Money Market Savings2
0.10%
$0
View
▼
Rate0.10%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
Money Market Accounts
0.10%
$0
View
▼
Rate0.10%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Saco & Biddeford Savings
Institution Rating:
A+5.0 ★ Texas Ratio: 4.27%
601 Broadway, South Portland, ME 04106
Essential Money Market
0.10%
$0
View
▼
Rate0.10%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
Money Market Accounts
0.08%
$0
View
▼
Rate0.08%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
inBusinessTM Money Market Savings2
0.05%
$0
View
▼
Rate0.05%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
Money Market Accounts
0.05%
$0
View
▼
Rate0.05%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
Money Market Accounts
0.03%
$0
View
▼
Rate0.03%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Norway Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 0.74%
207 Waterman Dr, South Portland, ME 04106
inBusinessTM Money Market Savings2
0.01%
$0
View
▼
Rate0.01%
Min Deposit$0
Min Balance—
UpdatedMay 17, 2026
Details

Aroostook County FS&L Assoc.
Institution Rating:
A+5.0 ★ Texas Ratio: 1.78%
Money Market Now
3.25%
$1,000
View
▼
Rate3.15%
Min Deposit$1,000
Min Balance—
UpdatedMay 17, 2026
Details

Minimum to Earn: $250,000 and over

Aroostook County FS&L Assoc.
Institution Rating:
A+5.0 ★ Texas Ratio: 1.78%
Money Market Now
2.80%
$1,000
View
▼
Rate2.72%
Min Deposit$1,000
Min Balance—
UpdatedMay 17, 2026
Details

Minimum to Earn: $100,000 - $249,999.99

Kennebec Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 1.44%
Premier Money Market
2.55%
$100
View
▼
Rate2.52%
Min Deposit$100
Min Balance—
UpdatedJun 3, 2026
Details

Tiered Balance: $1,000,000+

Androscoggin Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 2.03%
Flex Business Money Market Account
2.25%
$0
View
▼
Rate2.23%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

*New to Bank money only

Androscoggin Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 2.03%
Flex Personal Money Market Account
2.25%
$0
View
▼
Rate2.23%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

*New to Bank money only

Skowhegan Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 1.27%
Integrity Plus Money Market
2.22%
$0
View
▼
Rate2.20%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

Aroostook County FS&L Assoc.
Institution Rating:
A+5.0 ★ Texas Ratio: 1.78%
Money Market Now
2.15%
$1,000
View
▼
Rate2.10%
Min Deposit$1,000
Min Balance—
UpdatedMay 17, 2026
Details

Minimum to Earn: $50,000 - $99,999.99

First Federal S&L Bath
Institution Rating:
A+5.0 ★ Texas Ratio: 5.84%
Premier Money Market
2.02%
$10,000
View
▼
Rate2.00%
Min Deposit$10,000
Min Balance—
UpdatedMay 29, 2026
Details

Aroostook County FS&L Assoc.
Institution Rating:
A+5.0 ★ Texas Ratio: 1.78%
Money Market Now
1.90%
$1,000
View
▼
Rate1.86%
Min Deposit$1,000
Min Balance—
UpdatedMay 17, 2026
Details

Minimum to Earn: $10,000 - $49,999.99

Skowhegan Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 1.27%
Integrity Plus Money Market
1.56%
$0
View
▼
Rate1.55%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

First Federal S&L Bath
Institution Rating:
A+5.0 ★ Texas Ratio: 5.84%
Premier Money Market
1.51%
$10,000
View
▼
Rate1.50%
Min Deposit$10,000
Min Balance—
UpdatedMay 29, 2026
Details

Androscoggin Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 2.03%
Flex Personal Money Market Account
1.50%
$0
View
▼
Rate1.49%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

*New to Bank money only

Aroostook County FS&L Assoc.
Institution Rating:
A+5.0 ★ Texas Ratio: 1.78%
Money Market Now
1.50%
$1,000
View
▼
Rate1.47%
Min Deposit$1,000
Min Balance—
UpdatedMay 17, 2026
Details

Minimum to Earn: $0 - $9,999.99

Androscoggin Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 2.03%
Flex Business Money Market Account
1.50%
$0
View
▼
Rate1.49%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

*New to Bank money only

Kennebec Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 1.44%
Premier Money Market
1.40%
$100
View
▼
Rate1.39%
Min Deposit$100
Min Balance—
UpdatedJun 3, 2026
Details

Tiered Balance: $500,000 - $999,999

Skowhegan Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 1.27%
Integrity Plus Money Market
1.31%
$0
View
▼
Rate1.30%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

Skowhegan Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 1.27%
Integrity Plus Money Market
1.16%
$0
View
▼
Rate1.15%
Min Deposit$0
Min Balance—
UpdatedJun 3, 2026
Details

Kennebec Savings Bank
Institution Rating:
A+5.0 ★ Texas Ratio: 1.44%
Premier Money Market
1.10%
$100
View
▼
Rate1.09%
Min Deposit$100
Min Balance—
UpdatedJun 3, 2026
Details

Tiered Balance: $250,000 - $499,999

The Annual Percentage Yields (APYs) displayed are based on the highest APY offered for the specified deposit amount or less. Rates may change without prior notice. Rates reflect recent market quotes and representative offers available to depositors in South Portland, Maine and the surrounding area.

Banks and Credit Unions: If you identify an incorrect rate or wish to request the removal of your institution’s data, please contact us here.

South Portland, ME Money Market Rate Trends

Compare local South Portland, ME money market quotes against the statewide average

Daily money market rate averages tracked across our database of 8,500+ banks and credit unions — updated every evening.

View Full Maine MMA Trends →
High-Yield MMA — ME Avg
3.052%
▲ 0.001 vs 7 days ago

Maine high-yield MMA rates rose 0.001 points over the past 7 days to 3.052% APY.

Standard MMA — ME Avg
0.411%
Unchanged vs 7 days ago

Maine standard MMA rates currently average 0.411% APY.

As of Jun 3, 2026 • Rate data sourced from 8,500+ monitored institutions Powered by MonitorBankRates

Methodology & Data Sources

Independent, Free, and Unbiased Rate Comparisons: MonitorBankRates.com is an independent rate comparison service. Our South Portland, Maine money market rate tables are free for consumers to use, and we do not receive payment from any financial institution to be included or to be ranked in any particular order. Listings are based solely on the rates each institution publicly advertises on its own website.

A Note on Third-Party Rate Tools: Some pages on our site also feature rate comparison widgets and tools provided by third-party partners. These tools may include sponsored listings or affiliate links, and we may receive compensation when users click through them. We clearly label these widgets so you can tell at a glance which rates come from our independent MonitorBankRates.com tables and which come from our advertising partners.

Direct-Sourced & Verified Money Market Rate Data: We aggregate money market deposit account rates for South Portland, Maine directly from the official websites of banks and credit unions using our proprietary rate aggregation technology and a dedicated team of rate updaters. Every money market rate displayed on MonitorBankRates.com is highly accurate and trustworthy.

Local, Regional, and National Coverage: Our systems constantly monitor the market to provide a complete picture of available yields in South Portland, Maine. We feature a comprehensive mix of institutions from neighborhood credit unions and mid-sized regional banks to large national institutions available to savers in ME.

Daily Updates & Time-Stamped Accuracy: Our rate updaters verify and update money market rates daily. Because MMA yields can fluctuate rapidly based on market conditions, every product listed features its own specific “last updated” date, giving you complete transparency.

Frequently Asked Questions about Money Market Accounts in South Portland, Maine

What is a Money Market Account (MMA)?

A Money Market Account (MMA), formally known as a money market deposit account (MMDA), is a type of deposit account that often pays higher interest rates than standard savings accounts. They usually come with check-writing privileges and debit card access, offering a balance of growth and liquidity for savers in Maine.

Are Money Market accounts in South Portland, Maine safe?

Yes, as long as the institution is FDIC insured (for banks) or NCUA insured (for credit unions). This provides federal protection for your deposits in Maine up to $250,000 per depositor, per institution.

How often do MMA rates change in South Portland, Maine?

Money market rates are variable and can change at any time based on market conditions and Federal Reserve decisions. We update our local Maine rate tables daily to ensure you see the most current high-yield options.

Can I write checks from a Money Market Account?

Yes, most Money Market Accounts allow you to write a limited number of checks or make debit card transactions each month (typically up to 6), making them more flexible than a standard savings account.

How much do I need to deposit to open a money market account in South Portland, Maine?

Minimum deposit requirements vary widely. Some online money market deposit accounts can be opened with no minimum, while many banks and credit unions in South Portland, Maine require an initial deposit of $1,000 to $2,500 to earn the highest advertised APY. Larger deposits often unlock higher rate tiers, and FDIC or NCUA insurance protects deposits up to $250,000 per depositor, per institution.

Best Money Market Rates in South Portland, Maine

Here are some of the highest money market account APYs currently available in South Portland, Maine and the surrounding area:
  • Atlantic Regional Federal Credit Union
    Business Money Market — 4.00% APY
  • Evergreen Credit Union Portland, ME
    Money Market — 3.60% APY
  • Town & Country Federal Credit Union
    Money Market — 3.04% APY
  • Coast Line Credit Union
    Money Market — 2.45% APY
  • Saco & Biddeford Savings
    Essential Money Market — 2.10% APY
Money Market Rates reflect actual verified offers from banks and credit unions actively accepting deposits in South Portland, Maine. Your final available rate may depend on deposit amount and daily market movements. Last Updated and Verified: June 3, 2026

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