RANKING ·
Largest net interest margin improvement in Maine
21 of 22 banks in Maine that filed for the quarter ended June 30, 2026 are ranked. At least $100 million in total assets and a comparable quarter a year earlier. Institutions with equal values share a rank. Source: FDIC quarterly financial data.
| Rank | Institution | Headquarters | Net interest margin, change over 12 months | Total assets |
|---|---|---|---|---|
| 1 | Norway Savings Bank | Norway, ME | +56 bps | $2.2 billion |
| 2 | Bangor Savings Bank | Bangor, ME | +54 bps | $7.7 billion |
| 3 | Bar Harbor Savings and Loan Association | Bar Harbor, ME | +53 bps | $103 million |
| 4 | Aroostook County Federal Savings & Loan Association | Caribou, ME | +48 bps | $214 million |
| 5 | Partners Bank of New England | Sanford, ME | +46 bps | $1.1 billion |
| 6 | First Federal Savings and Loan Association of Bath | Bath, ME | +43 bps | $189 million |
| 7 | Machias Savings Bank | Machias, ME | +43 bps | $2.7 billion |
| 8 | Franklin Savings Bank | Farmington, ME | +42 bps | $787 million |
| 9 | Bath Savings Institution | Bath, ME | +39 bps | $1.5 billion |
| 10 | Bar Harbor Bank and Trust Company | Bar Harbor, ME | +37 bps | $4.7 billion |
| 11 | First National Bank | Damariscotta, ME | +37 bps | $3.2 billion |
| 12 | Auburn Savings Bank FSB | Auburn, ME | +35 bps | $103 million |
| 13 | Skowhegan Savings Bank | Skowhegan, ME | +31 bps | $855 million |
| 14 | Saco & Biddeford Savings Institution | Saco, ME | +30 bps | $1.5 billion |
| 15 | Androscoggin Savings Bank | Lewiston, ME | +29 bps | $1.8 billion |
| 16 | Kennebec Savings Bank | Augusta, ME | +24 bps | $1.9 billion |
| 17 | Camden National Bank | Camden, ME | +21 bps | $6.9 billion |
| 18 | Kennebunk Savings Bank | Kennebunk, ME | +20 bps | $2.2 billion |
| 19 | Katahdin Trust Company | Patten, ME | +13 bps | $1.2 billion |
| 20 | Maine Community Bank | Portland, ME | 0 bps | $3.0 billion |
| 21 | Northeast Bank | Portland, ME | -36 bps | $5.2 billion |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings